Month: August 2024
How can I compress text file by Huffman encoding method by using matlab
To compress the text fileTo compress the text file To compress the text file huffman encoding MATLAB Answers — New Questions
腾龙公司开户要怎么注册？M3669857420
盛世集团公司开户注册账号，通常需要遵循以下一般步骤： 准备相关资料：可能包括个人或企业的身份证明、联系方式、地址证明等。 联系盛世集团：通过其官方网站、客服渠道等，了解具体的开户注册流程和所需资料要求。 填写申请表格：按照要求如实填写相关信息。 提交资料：将准备好的资料提交给盛世集团，可以通过线上上传或线路下提交的方式。 等待审核：公司对提交的资料进行审核。注册：审核通过后，即可成功开户注册账号。需要注意的是，具体的步骤和要求可能因盛世集团的规定而有所不同。建议你直接与该公司进行详细沟通，以确保顺利完成开户注册。以上只是一个大致的流程示例，实际操作中可能还有更多细节和特定要求。
盛世集团公司开户注册账号，通常需要遵循以下一般步骤： 准备相关资料：可能包括个人或企业的身份证明、联系方式、地址证明等。 联系盛世集团：通过其官方网站、客服渠道等，了解具体的开户注册流程和所需资料要求。 填写申请表格：按照要求如实填写相关信息。 提交资料：将准备好的资料提交给盛世集团，可以通过线上上传或线路下提交的方式。 等待审核：公司对提交的资料进行审核。注册：审核通过后，即可成功开户注册账号。需要注意的是，具体的步骤和要求可能因盛世集团的规定而有所不同。建议你直接与该公司进行详细沟通，以确保顺利完成开户注册。以上只是一个大致的流程示例，实际操作中可能还有更多细节和特定要求。 Read More
Not able to open files in IE mode
I’ve been trying to open a local pdf file in IE mode, every time I try to reload the file in internet explorer mode this dialogue is appearing. It says to open or save the file, If I’m trying to open a file then it is opening in edge not in IE mode.
I’ve been trying to open a local pdf file in IE mode, every time I try to reload the file in internet explorer mode this dialogue is appearing. It says to open or save the file, If I’m trying to open a file then it is opening in edge not in IE mode. Read More
Stop Data Acquisition when Needed
Hello,
I am building a data aquisition program using NI devices. I developed a program using the data aquisition toolbox, however the code that I have needs a run time as input which is only when I know the data aquisition time.
However in cases when I need to stop the data aquisition before the set input time, I am unable to do so before the complete run is done.
Is there a way to stop the program and still have access to the aquired data because if I stop the program, the workspace clears out and there in no data there or is there a way I can continously add data into a buffer which the data is being read so that even if the program is stipped, the aquired data is accessible.
I have attached my code for review.
close all
clear all
clc
%% Create a data acquisition session
daqSession = daq.createSession(‘ni’);
%% Add channels specified by subsystem type and device
daqSession.addAnalogInputChannel(‘Dev1′,’ai0′,’Bridge’);
daqSession.addAnalogInputChannel(‘Dev1′,’ai1′,’Bridge’);
daqSession.addAnalogInputChannel(‘Dev1′,’ai2′,’Bridge’);
daqSession.addAnalogInputChannel(‘Dev1′,’ai3′,’Bridge’);
%% Configure properties
daqSession.Rate = 1653;
daqSession.IsContinuous = 1;
hlistener = daqSession.addlistener(‘DataAvailable’,@(src,event) plot(event.TimeStamps, event.Data));
daqSession.IsContinuous = 0;
daqSession.DurationInSeconds = 1800;
daqSession.Channels(1).BridgeMode = ‘Full’;
daqSession.Channels(1).ExcitationVoltage = 5;
daqSession.Channels(1).NominalBridgeResistance = 1;
daqSession.Channels(1).Name = ‘Kulite 1’;
daqSession.Channels(2).BridgeMode = ‘Full’;
daqSession.Channels(2).NominalBridgeResistance = 1;
daqSession.Channels(2).Name = ‘Kulite2’;
daqSession.Channels(3).BridgeMode = ‘Full’;
daqSession.Channels(3).NominalBridgeResistance = 1;
daqSession.Channels(3).Name = ‘Kulite3’;
daqSession.Channels(4).BridgeMode = ‘Full’;
daqSession.Channels(4).NominalBridgeResistance = 1;
daqSession.Channels(4).Name = ‘Kulite4’;
%Read supplied voltage
V=daqSession.Channels(1).ExcitationVoltage;
%% Run the data acquisition session
[data,time] = daqSession.startForeground();
figure
plot(time,data)
%Take values from DAQ Matrix
V1=data(:,1);
V2=data(:,2);
V3=data(:,3);
V4=data(:,4);
%Create Matrix for other Time and Pressure Values
Voltagedata=[time,V1,V2,V3,V4];
fileName = sprintf(‘RawVData_%s.csv’, datestr(now, ‘yyyymmdd_HHMMSS’))
writematrix(Voltagedata,fileName)
%% Disconnect from the device
daqSession.release();
delete(daqSession);
clear daqSession;Hello,
I am building a data aquisition program using NI devices. I developed a program using the data aquisition toolbox, however the code that I have needs a run time as input which is only when I know the data aquisition time.
However in cases when I need to stop the data aquisition before the set input time, I am unable to do so before the complete run is done.
Is there a way to stop the program and still have access to the aquired data because if I stop the program, the workspace clears out and there in no data there or is there a way I can continously add data into a buffer which the data is being read so that even if the program is stipped, the aquired data is accessible.
I have attached my code for review.
close all
clear all
clc
%% Create a data acquisition session
daqSession = daq.createSession(‘ni’);
%% Add channels specified by subsystem type and device
daqSession.addAnalogInputChannel(‘Dev1′,’ai0′,’Bridge’);
daqSession.addAnalogInputChannel(‘Dev1′,’ai1′,’Bridge’);
daqSession.addAnalogInputChannel(‘Dev1′,’ai2′,’Bridge’);
daqSession.addAnalogInputChannel(‘Dev1′,’ai3′,’Bridge’);
%% Configure properties
daqSession.Rate = 1653;
daqSession.IsContinuous = 1;
hlistener = daqSession.addlistener(‘DataAvailable’,@(src,event) plot(event.TimeStamps, event.Data));
daqSession.IsContinuous = 0;
daqSession.DurationInSeconds = 1800;
daqSession.Channels(1).BridgeMode = ‘Full’;
daqSession.Channels(1).ExcitationVoltage = 5;
daqSession.Channels(1).NominalBridgeResistance = 1;
daqSession.Channels(1).Name = ‘Kulite 1’;
daqSession.Channels(2).BridgeMode = ‘Full’;
daqSession.Channels(2).NominalBridgeResistance = 1;
daqSession.Channels(2).Name = ‘Kulite2’;
daqSession.Channels(3).BridgeMode = ‘Full’;
daqSession.Channels(3).NominalBridgeResistance = 1;
daqSession.Channels(3).Name = ‘Kulite3’;
daqSession.Channels(4).BridgeMode = ‘Full’;
daqSession.Channels(4).NominalBridgeResistance = 1;
daqSession.Channels(4).Name = ‘Kulite4’;
%Read supplied voltage
V=daqSession.Channels(1).ExcitationVoltage;
%% Run the data acquisition session
[data,time] = daqSession.startForeground();
figure
plot(time,data)
%Take values from DAQ Matrix
V1=data(:,1);
V2=data(:,2);
V3=data(:,3);
V4=data(:,4);
%Create Matrix for other Time and Pressure Values
Voltagedata=[time,V1,V2,V3,V4];
fileName = sprintf(‘RawVData_%s.csv’, datestr(now, ‘yyyymmdd_HHMMSS’))
writematrix(Voltagedata,fileName)
%% Disconnect from the device
daqSession.release();
delete(daqSession);
clear daqSession; Hello,
I am building a data aquisition program using NI devices. I developed a program using the data aquisition toolbox, however the code that I have needs a run time as input which is only when I know the data aquisition time.
However in cases when I need to stop the data aquisition before the set input time, I am unable to do so before the complete run is done.
Is there a way to stop the program and still have access to the aquired data because if I stop the program, the workspace clears out and there in no data there or is there a way I can continously add data into a buffer which the data is being read so that even if the program is stipped, the aquired data is accessible.
I have attached my code for review.
close all
clear all
clc
%% Create a data acquisition session
daqSession = daq.createSession(‘ni’);
%% Add channels specified by subsystem type and device
daqSession.addAnalogInputChannel(‘Dev1′,’ai0′,’Bridge’);
daqSession.addAnalogInputChannel(‘Dev1′,’ai1′,’Bridge’);
daqSession.addAnalogInputChannel(‘Dev1′,’ai2′,’Bridge’);
daqSession.addAnalogInputChannel(‘Dev1′,’ai3′,’Bridge’);
%% Configure properties
daqSession.Rate = 1653;
daqSession.IsContinuous = 1;
hlistener = daqSession.addlistener(‘DataAvailable’,@(src,event) plot(event.TimeStamps, event.Data));
daqSession.IsContinuous = 0;
daqSession.DurationInSeconds = 1800;
daqSession.Channels(1).BridgeMode = ‘Full’;
daqSession.Channels(1).ExcitationVoltage = 5;
daqSession.Channels(1).NominalBridgeResistance = 1;
daqSession.Channels(1).Name = ‘Kulite 1’;
daqSession.Channels(2).BridgeMode = ‘Full’;
daqSession.Channels(2).NominalBridgeResistance = 1;
daqSession.Channels(2).Name = ‘Kulite2’;
daqSession.Channels(3).BridgeMode = ‘Full’;
daqSession.Channels(3).NominalBridgeResistance = 1;
daqSession.Channels(3).Name = ‘Kulite3’;
daqSession.Channels(4).BridgeMode = ‘Full’;
daqSession.Channels(4).NominalBridgeResistance = 1;
daqSession.Channels(4).Name = ‘Kulite4’;
%Read supplied voltage
V=daqSession.Channels(1).ExcitationVoltage;
%% Run the data acquisition session
[data,time] = daqSession.startForeground();
figure
plot(time,data)
%Take values from DAQ Matrix
V1=data(:,1);
V2=data(:,2);
V3=data(:,3);
V4=data(:,4);
%Create Matrix for other Time and Pressure Values
Voltagedata=[time,V1,V2,V3,V4];
fileName = sprintf(‘RawVData_%s.csv’, datestr(now, ‘yyyymmdd_HHMMSS’))
writematrix(Voltagedata,fileName)
%% Disconnect from the device
daqSession.release();
delete(daqSession);
clear daqSession; nidaq, data acquisition MATLAB Answers — New Questions
Multivariate regression for constrained dependent variables
I have a database formed by 6 independent variables and 2 dependent variables. The equation for each dependent variable should be something like:
I want to find s that satisfy .
Which metodology should I use?
I tried using mvregress, but I couldn’t constrain the dependent variables. I am also thinking of using optimization as well, but I still couldn’t figure out how to constrain the dependent variables.
Thank you so much!I have a database formed by 6 independent variables and 2 dependent variables. The equation for each dependent variable should be something like:
I want to find s that satisfy .
Which metodology should I use?
I tried using mvregress, but I couldn’t constrain the dependent variables. I am also thinking of using optimization as well, but I still couldn’t figure out how to constrain the dependent variables.
Thank you so much! I have a database formed by 6 independent variables and 2 dependent variables. The equation for each dependent variable should be something like:
I want to find s that satisfy .
Which metodology should I use?
I tried using mvregress, but I couldn’t constrain the dependent variables. I am also thinking of using optimization as well, but I still couldn’t figure out how to constrain the dependent variables.
Thank you so much! regression, optimization MATLAB Answers — New Questions
Write code to solve the following 0-1 Knapsack problem
Given a knapsack of items N and capacity W. The volume and value of the item is c(i) and w(i) respectively. Find the maximum total value in the knapsack. Suppose that N=10, and V=300. The volume of each item is 95, 75, 23, 73, 50, 22, 6, 57, 89 and 98. The values of each item are 89, 59, 19, 43, 100, 72, 44, 16, 7 and 64.Given a knapsack of items N and capacity W. The volume and value of the item is c(i) and w(i) respectively. Find the maximum total value in the knapsack. Suppose that N=10, and V=300. The volume of each item is 95, 75, 23, 73, 50, 22, 6, 57, 89 and 98. The values of each item are 89, 59, 19, 43, 100, 72, 44, 16, 7 and 64. Given a knapsack of items N and capacity W. The volume and value of the item is c(i) and w(i) respectively. Find the maximum total value in the knapsack. Suppose that N=10, and V=300. The volume of each item is 95, 75, 23, 73, 50, 22, 6, 57, 89 and 98. The values of each item are 89, 59, 19, 43, 100, 72, 44, 16, 7 and 64. knapsack0-1, find maximum total value MATLAB Answers — New Questions
Ignored/Incorrect MV constraint in nonlinear MPC block with parameter
Hello! I am implementing a nonlinear model predictive controller using MPC Toolbox in Simulink. A constraint of my NMPC appears to be ignored and I believe it is due to an error in my custon inequality constraint function. Here’s some context:
I am making a mass follow a reference displacement in a vehicle active suspension system. Currently, my NMPC’s manipulated variable is the increment in force for an actuator. My system under control takes a force magnitude as an input rather than an increment in force. Therefore, to constrain the maximum force magnitude allowed in my custom constraint function I need to pass in the previous magnitude as a parameter to add to the manipulated variable. This allows me to compare the sum of the increment and the previous magnitude to the constraint parameter. Currently, when looking at the produced force in a scope after a simulation, the amount is outside of the bounds of Fc_max and Fc_min (+/- 15N).
I have ensured the scope determines the value of the force magnitude correctly, and I have also ensured my cost function, state function, and equality constraints are configured properly. The bus that passes in params is also configured correctly. The controller exhibits acceptable tracking performance, it just ignores this constraint. Furthermore, the other constraints appear to be observed (but this could just be due to my reference not requiring the controller to apply those constraints). This leads me to believe my cineq function is incorrect somehow. The first block of code is my nlmpc setup, and the second is my cineq function. The picture is the force command produced (that violates the constraint).
%% cost function weights (best perf @ w=95000,w_dot=105,R=2,’E=1′)
Ts = 0.01;
Q_n = 1000;
Q_ndot = 0; % fix this
R = 15;
E = 1;
%% physical constraints
% maximum forces (currently +/- 15) (units: N)
Fc_max = 15;
Fc_min = -15;
% maximum rate of change in forces (units: N/Ts) (at Ts = 0.01 this is 10)
delta_Fc_max = 1000*Ts;
delta_Fc_min =-1000*Ts;
% maximum displacement of the spacing (units: m)
n_max = 0.05;
n_min = -0.05;
%% misc params
alpha_o = 1/(ms) + 1/(mu);
eta_ddot = 0;
Fc_last = 0;
Hc = 1;
%% NMPC settings, weights, and constraints
nx = 2;
ny = nx;
nu = 1;
nulmpcobj = nlmpc(nx,ny,nu);
nulmpcobj.Ts = Ts;
nulmpcobj.PredictionHorizon = 20;
nulmpcobj.ControlHorizon = Hc;
% how plant states evolve over time. Model is DT.
nulmpcobj.Model.StateFcn = "stateFunction";
nulmpcobj.Model.IsContinuousTime = false;
nulmpcobj.Model.NumberOfParameters = 15;
nulmpcobj.Model.OutputFcn = "outputFunction";
% set up cost function and constraints
nulmpcobj.Optimization.CustomCostFcn = "costFunction";
Optimization.CustomEqConFcn = "eqConFunction";
Optimization.CustomIneqConFcn = "ineqConFunction";
nulmpcobj.Optimization.ReplaceStandardCost = true;
SolverOptions.Algorithm = ‘sqp’;
% initial conditions
x0 = [0;0];
u0 = 0;
%% WARNING: EVERY TIME THIS IS EDITED, YOU NEED TO EDIT ALL OTHER FUNCTIONS WITH PARAMS…
parameters = {alpha_o,eta_ddot,Q_n,Q_ndot,R,E,Fc_max,Fc_min,delta_Fc_max,delta_Fc_min,n_max,n_min,Ts,Fc_last,Hc};
% Set up parameter bus for NMPC object (if it isn’t already initialized)
if exist(‘paramBus’,’var’)==0
mdl = ‘NULMPC_RAS’;
open_system(mdl)
createParameterBus(nulmpcobj,[mdl ‘/NULMPC’],’paramBus’,parameters);
end
%% Now the NLMPC and simulation parameters are ready to go!
%% Run the simulation or optionally validate the NMPC functions here in MATLAB.
% rng(0);
% validateFcns(nulmpcobj,rand(nx,1),rand(nu,1),[],parameters);
sim(mdl);
function cineq = ineqConFunction(X,U,data,alpha_o,eta_ddot,Q_n,Q_ndot,R,E,Fc_max,Fc_min,delta_Fc_max,delta_Fc_min,n_max,n_min,Ts,Fc_last,Hc)
cineq = zeros(6,1);
p = data.PredictionHorizon;
% delta constraint max/min
U1 = U(1:Hc,data.MVIndex(1));
cineq(1) = U1 – delta_Fc_max;
cineq(2) = -U1 + delta_Fc_min;
% magnitude
X1 = X(2:p+1,1);
cineq(3) = X1 – n_max;
cineq(4) = -X1 + n_min;
%% output constraint (THIS IS THE ONE I THINK IS INCORRECT)
cineq(5) = (U1 + Fc_last) – Fc_max;
cineq(6) = -(U1 + Fc_last) + Fc_min;
end
Since my control horizon is 1, the nmpc controller will hold my constrained input constant after the end of Hc. This should mean I do not need to have these constraints run across the whole prediction horizon p for the constraints to apply. Thank you to anyone who responds!Hello! I am implementing a nonlinear model predictive controller using MPC Toolbox in Simulink. A constraint of my NMPC appears to be ignored and I believe it is due to an error in my custon inequality constraint function. Here’s some context:
I am making a mass follow a reference displacement in a vehicle active suspension system. Currently, my NMPC’s manipulated variable is the increment in force for an actuator. My system under control takes a force magnitude as an input rather than an increment in force. Therefore, to constrain the maximum force magnitude allowed in my custom constraint function I need to pass in the previous magnitude as a parameter to add to the manipulated variable. This allows me to compare the sum of the increment and the previous magnitude to the constraint parameter. Currently, when looking at the produced force in a scope after a simulation, the amount is outside of the bounds of Fc_max and Fc_min (+/- 15N).
I have ensured the scope determines the value of the force magnitude correctly, and I have also ensured my cost function, state function, and equality constraints are configured properly. The bus that passes in params is also configured correctly. The controller exhibits acceptable tracking performance, it just ignores this constraint. Furthermore, the other constraints appear to be observed (but this could just be due to my reference not requiring the controller to apply those constraints). This leads me to believe my cineq function is incorrect somehow. The first block of code is my nlmpc setup, and the second is my cineq function. The picture is the force command produced (that violates the constraint).
%% cost function weights (best perf @ w=95000,w_dot=105,R=2,’E=1′)
Ts = 0.01;
Q_n = 1000;
Q_ndot = 0; % fix this
R = 15;
E = 1;
%% physical constraints
% maximum forces (currently +/- 15) (units: N)
Fc_max = 15;
Fc_min = -15;
% maximum rate of change in forces (units: N/Ts) (at Ts = 0.01 this is 10)
delta_Fc_max = 1000*Ts;
delta_Fc_min =-1000*Ts;
% maximum displacement of the spacing (units: m)
n_max = 0.05;
n_min = -0.05;
%% misc params
alpha_o = 1/(ms) + 1/(mu);
eta_ddot = 0;
Fc_last = 0;
Hc = 1;
%% NMPC settings, weights, and constraints
nx = 2;
ny = nx;
nu = 1;
nulmpcobj = nlmpc(nx,ny,nu);
nulmpcobj.Ts = Ts;
nulmpcobj.PredictionHorizon = 20;
nulmpcobj.ControlHorizon = Hc;
% how plant states evolve over time. Model is DT.
nulmpcobj.Model.StateFcn = "stateFunction";
nulmpcobj.Model.IsContinuousTime = false;
nulmpcobj.Model.NumberOfParameters = 15;
nulmpcobj.Model.OutputFcn = "outputFunction";
% set up cost function and constraints
nulmpcobj.Optimization.CustomCostFcn = "costFunction";
Optimization.CustomEqConFcn = "eqConFunction";
Optimization.CustomIneqConFcn = "ineqConFunction";
nulmpcobj.Optimization.ReplaceStandardCost = true;
SolverOptions.Algorithm = ‘sqp’;
% initial conditions
x0 = [0;0];
u0 = 0;
%% WARNING: EVERY TIME THIS IS EDITED, YOU NEED TO EDIT ALL OTHER FUNCTIONS WITH PARAMS…
parameters = {alpha_o,eta_ddot,Q_n,Q_ndot,R,E,Fc_max,Fc_min,delta_Fc_max,delta_Fc_min,n_max,n_min,Ts,Fc_last,Hc};
% Set up parameter bus for NMPC object (if it isn’t already initialized)
if exist(‘paramBus’,’var’)==0
mdl = ‘NULMPC_RAS’;
open_system(mdl)
createParameterBus(nulmpcobj,[mdl ‘/NULMPC’],’paramBus’,parameters);
end
%% Now the NLMPC and simulation parameters are ready to go!
%% Run the simulation or optionally validate the NMPC functions here in MATLAB.
% rng(0);
% validateFcns(nulmpcobj,rand(nx,1),rand(nu,1),[],parameters);
sim(mdl);
function cineq = ineqConFunction(X,U,data,alpha_o,eta_ddot,Q_n,Q_ndot,R,E,Fc_max,Fc_min,delta_Fc_max,delta_Fc_min,n_max,n_min,Ts,Fc_last,Hc)
cineq = zeros(6,1);
p = data.PredictionHorizon;
% delta constraint max/min
U1 = U(1:Hc,data.MVIndex(1));
cineq(1) = U1 – delta_Fc_max;
cineq(2) = -U1 + delta_Fc_min;
% magnitude
X1 = X(2:p+1,1);
cineq(3) = X1 – n_max;
cineq(4) = -X1 + n_min;
%% output constraint (THIS IS THE ONE I THINK IS INCORRECT)
cineq(5) = (U1 + Fc_last) – Fc_max;
cineq(6) = -(U1 + Fc_last) + Fc_min;
end
Since my control horizon is 1, the nmpc controller will hold my constrained input constant after the end of Hc. This should mean I do not need to have these constraints run across the whole prediction horizon p for the constraints to apply. Thank you to anyone who responds! Hello! I am implementing a nonlinear model predictive controller using MPC Toolbox in Simulink. A constraint of my NMPC appears to be ignored and I believe it is due to an error in my custon inequality constraint function. Here’s some context:
I am making a mass follow a reference displacement in a vehicle active suspension system. Currently, my NMPC’s manipulated variable is the increment in force for an actuator. My system under control takes a force magnitude as an input rather than an increment in force. Therefore, to constrain the maximum force magnitude allowed in my custom constraint function I need to pass in the previous magnitude as a parameter to add to the manipulated variable. This allows me to compare the sum of the increment and the previous magnitude to the constraint parameter. Currently, when looking at the produced force in a scope after a simulation, the amount is outside of the bounds of Fc_max and Fc_min (+/- 15N).
I have ensured the scope determines the value of the force magnitude correctly, and I have also ensured my cost function, state function, and equality constraints are configured properly. The bus that passes in params is also configured correctly. The controller exhibits acceptable tracking performance, it just ignores this constraint. Furthermore, the other constraints appear to be observed (but this could just be due to my reference not requiring the controller to apply those constraints). This leads me to believe my cineq function is incorrect somehow. The first block of code is my nlmpc setup, and the second is my cineq function. The picture is the force command produced (that violates the constraint).
%% cost function weights (best perf @ w=95000,w_dot=105,R=2,’E=1′)
Ts = 0.01;
Q_n = 1000;
Q_ndot = 0; % fix this
R = 15;
E = 1;
%% physical constraints
% maximum forces (currently +/- 15) (units: N)
Fc_max = 15;
Fc_min = -15;
% maximum rate of change in forces (units: N/Ts) (at Ts = 0.01 this is 10)
delta_Fc_max = 1000*Ts;
delta_Fc_min =-1000*Ts;
% maximum displacement of the spacing (units: m)
n_max = 0.05;
n_min = -0.05;
%% misc params
alpha_o = 1/(ms) + 1/(mu);
eta_ddot = 0;
Fc_last = 0;
Hc = 1;
%% NMPC settings, weights, and constraints
nx = 2;
ny = nx;
nu = 1;
nulmpcobj = nlmpc(nx,ny,nu);
nulmpcobj.Ts = Ts;
nulmpcobj.PredictionHorizon = 20;
nulmpcobj.ControlHorizon = Hc;
% how plant states evolve over time. Model is DT.
nulmpcobj.Model.StateFcn = "stateFunction";
nulmpcobj.Model.IsContinuousTime = false;
nulmpcobj.Model.NumberOfParameters = 15;
nulmpcobj.Model.OutputFcn = "outputFunction";
% set up cost function and constraints
nulmpcobj.Optimization.CustomCostFcn = "costFunction";
Optimization.CustomEqConFcn = "eqConFunction";
Optimization.CustomIneqConFcn = "ineqConFunction";
nulmpcobj.Optimization.ReplaceStandardCost = true;
SolverOptions.Algorithm = ‘sqp’;
% initial conditions
x0 = [0;0];
u0 = 0;
%% WARNING: EVERY TIME THIS IS EDITED, YOU NEED TO EDIT ALL OTHER FUNCTIONS WITH PARAMS…
parameters = {alpha_o,eta_ddot,Q_n,Q_ndot,R,E,Fc_max,Fc_min,delta_Fc_max,delta_Fc_min,n_max,n_min,Ts,Fc_last,Hc};
% Set up parameter bus for NMPC object (if it isn’t already initialized)
if exist(‘paramBus’,’var’)==0
mdl = ‘NULMPC_RAS’;
open_system(mdl)
createParameterBus(nulmpcobj,[mdl ‘/NULMPC’],’paramBus’,parameters);
end
%% Now the NLMPC and simulation parameters are ready to go!
%% Run the simulation or optionally validate the NMPC functions here in MATLAB.
% rng(0);
% validateFcns(nulmpcobj,rand(nx,1),rand(nu,1),[],parameters);
sim(mdl);
function cineq = ineqConFunction(X,U,data,alpha_o,eta_ddot,Q_n,Q_ndot,R,E,Fc_max,Fc_min,delta_Fc_max,delta_Fc_min,n_max,n_min,Ts,Fc_last,Hc)
cineq = zeros(6,1);
p = data.PredictionHorizon;
% delta constraint max/min
U1 = U(1:Hc,data.MVIndex(1));
cineq(1) = U1 – delta_Fc_max;
cineq(2) = -U1 + delta_Fc_min;
% magnitude
X1 = X(2:p+1,1);
cineq(3) = X1 – n_max;
cineq(4) = -X1 + n_min;
%% output constraint (THIS IS THE ONE I THINK IS INCORRECT)
cineq(5) = (U1 + Fc_last) – Fc_max;
cineq(6) = -(U1 + Fc_last) + Fc_min;
end
Since my control horizon is 1, the nmpc controller will hold my constrained input constant after the end of Hc. This should mean I do not need to have these constraints run across the whole prediction horizon p for the constraints to apply. Thank you to anyone who responds! nonlinear, mpc, constraint, simulink, nmpc, optimization MATLAB Answers — New Questions
Background issue in Win 11
I have two virtual desktop screens in my laptop funnily enough one of the background is different from other
And if i try to add a new desktop
which ever desktop i am highlighting that background gets replicated.
I am not sure if this a feature or a bug.
Any explanation for this?
I have two virtual desktop screens in my laptop funnily enough one of the background is different from other And if i try to add a new desktop which ever desktop i am highlighting that background gets replicated. I am not sure if this a feature or a bug. Any explanation for this? Read More
Figure scaling issues in Linux
Getting good DPI settings for the editor in Linux is possible, though a tad annoying.
However, I have no idea how to go about fixing the scaling problems for figures. I can make a temp fix by upping the font size (see image) but can’t find a way to fix this. Ideally, want I want is to, by default, scale all images by about 160%.
Font adjusted with
set(findall(gcf,’-property’,’FontSize’),’FontSize’,18)
I could possible go through everything in
get(groot,’factory’)
and asjust dozens of settings there to fix this but realy all it needs is a single scale factor that would apply to fonts and data points/lines.
Cheers for any help.Getting good DPI settings for the editor in Linux is possible, though a tad annoying.
However, I have no idea how to go about fixing the scaling problems for figures. I can make a temp fix by upping the font size (see image) but can’t find a way to fix this. Ideally, want I want is to, by default, scale all images by about 160%.
Font adjusted with
set(findall(gcf,’-property’,’FontSize’),’FontSize’,18)
I could possible go through everything in
get(groot,’factory’)
and asjust dozens of settings there to fix this but realy all it needs is a single scale factor that would apply to fonts and data points/lines.
Cheers for any help. Getting good DPI settings for the editor in Linux is possible, though a tad annoying.
However, I have no idea how to go about fixing the scaling problems for figures. I can make a temp fix by upping the font size (see image) but can’t find a way to fix this. Ideally, want I want is to, by default, scale all images by about 160%.
Font adjusted with
set(findall(gcf,’-property’,’FontSize’),’FontSize’,18)
I could possible go through everything in
get(groot,’factory’)
and asjust dozens of settings there to fix this but realy all it needs is a single scale factor that would apply to fonts and data points/lines.
Cheers for any help. linux, dpi, scale, figures, dispaly MATLAB Answers — New Questions
How to export images to a single pdf file
Hi
I have a cell array and in it i have say 200 images of size(250,250). Now i want to generate a visualization i-e i want to generate a pdf file that will have all those 200 images in a single pdf file. Can someone please give a hint or guide me because i cant seem to find a possible solution by using print function.
Thanks anywaysHi
I have a cell array and in it i have say 200 images of size(250,250). Now i want to generate a visualization i-e i want to generate a pdf file that will have all those 200 images in a single pdf file. Can someone please give a hint or guide me because i cant seem to find a possible solution by using print function.
Thanks anyways Hi
I have a cell array and in it i have say 200 images of size(250,250). Now i want to generate a visualization i-e i want to generate a pdf file that will have all those 200 images in a single pdf file. Can someone please give a hint or guide me because i cant seem to find a possible solution by using print function.
Thanks anyways digital image processing, image processing, print, pdf MATLAB Answers — New Questions
How do I modify the attributes of entities in a custom matlab discrete-event system block?
I want to modify the entity attribute during the simulation in a custom matlab discrete-event system block.As shown below. But when I debugged the simulation, it turned out that the attribute of entity was restored to its original value after the program jumped out of the function that changed its value. How can I modify the attributes correctly?I want to modify the entity attribute during the simulation in a custom matlab discrete-event system block.As shown below. But when I debugged the simulation, it turned out that the attribute of entity was restored to its original value after the program jumped out of the function that changed its value. How can I modify the attributes correctly? I want to modify the entity attribute during the simulation in a custom matlab discrete-event system block.As shown below. But when I debugged the simulation, it turned out that the attribute of entity was restored to its original value after the program jumped out of the function that changed its value. How can I modify the attributes correctly? simulink, simevents, simulation MATLAB Answers — New Questions
Print Preview Failed from Web Browsers
Unable to print from Web browsers, both Chrome and Edge. When printing, it shows the error Print Preview Failed, and the available printer is greyed out. Attached is a picture for your reference. Can someone help me troubleshoot the issue.
OS: Windows 11
browsers are Chrome and Edge
I tried the following without any success:
I tried to print from both browsers and got the same error I logged into another user account and getting the same error I reinstalled the printer driver Reset both browsers and update to latest version
Note: This PC was upgraded from Windows 10 to 11 recently, and it is a member of a domain.Print Preview Failed
Unable to print from Web browsers, both Chrome and Edge. When printing, it shows the error Print Preview Failed, and the available printer is greyed out. Attached is a picture for your reference. Can someone help me troubleshoot the issue.OS: Windows 11 browsers are Chrome and EdgeI tried the following without any success:I tried to print from both browsers and got the same error I logged into another user account and getting the same error I reinstalled the printer driver Reset both browsers and update to latest versionNote: This PC was upgraded from Windows 10 to 11 recently, and it is a member of a domain.Print Preview Failed Read More
CPU usage 100% when I use simulink desktop real time, both in connected mode and kernel mode
My sotfware and hardware infomation:
Simulink Desktop Real-Time version 23.2.0 (C) The MathWorks, Inc. 1994-2023
Matlab version is R2023b, and my CPU is Intel 13900H
I use simulink desktop real time to run my project, the fixed step is 0.1s, Once I start the model simulation, regardless of kernel mode or connected mode, my computer’s cpu usage is always dead at 100% unless I stop the model simulation; at first I suspected that it’s a problem with my model or time step, so I switched to the official matlab example (openExample(‘sldrt/ RealTimeVanDerPolSimulationExample’)), the result is still the same as my model simulation, the cpu usage stays at 100% unless I stop the model simulation for the cpu usage to return to normal.
Please help, thanksMy sotfware and hardware infomation:
Simulink Desktop Real-Time version 23.2.0 (C) The MathWorks, Inc. 1994-2023
Matlab version is R2023b, and my CPU is Intel 13900H
I use simulink desktop real time to run my project, the fixed step is 0.1s, Once I start the model simulation, regardless of kernel mode or connected mode, my computer’s cpu usage is always dead at 100% unless I stop the model simulation; at first I suspected that it’s a problem with my model or time step, so I switched to the official matlab example (openExample(‘sldrt/ RealTimeVanDerPolSimulationExample’)), the result is still the same as my model simulation, the cpu usage stays at 100% unless I stop the model simulation for the cpu usage to return to normal.
Please help, thanks My sotfware and hardware infomation:
Simulink Desktop Real-Time version 23.2.0 (C) The MathWorks, Inc. 1994-2023
Matlab version is R2023b, and my CPU is Intel 13900H
I use simulink desktop real time to run my project, the fixed step is 0.1s, Once I start the model simulation, regardless of kernel mode or connected mode, my computer’s cpu usage is always dead at 100% unless I stop the model simulation; at first I suspected that it’s a problem with my model or time step, so I switched to the official matlab example (openExample(‘sldrt/ RealTimeVanDerPolSimulationExample’)), the result is still the same as my model simulation, the cpu usage stays at 100% unless I stop the model simulation for the cpu usage to return to normal.
Please help, thanks desktop real time, cpu 100%, simulink MATLAB Answers — New Questions
PowerQuery Question: = Folder.Files() opens all sheets in Workbooks
I’m automating a PowerQuery to open monthly reports.
blank query for “FolderLocation” where I store new = Folder.Files(FolderLocation) to open them (but I only want ONE sheet not all sheets)then, Add Column/Custom Column/= Excel.Workbook([Custom], true)
That converts them all to tables for additional use… but… weird stuff happens.
some of the reports are already tables and I get duplicatessome of the reports are sheets not tables and THOSE workbooks have multiple sheets. One sheet is the data I want and the other sheets are pivot or formula tables.
I just want to bring in the data sheet. Since I’m automating it, I’m happy to spend the time now typing in the name of the sheet if there is a formula for that.
Q1 – how do I keep from getting duplicate entries opening a single table workbook
Q2 – how do I get Folder.File to open one sheet of a workbook
thanks!
mm
I’m automating a PowerQuery to open monthly reports. blank query for “FolderLocation” where I store new = Folder.Files(FolderLocation) to open them (but I only want ONE sheet not all sheets)then, Add Column/Custom Column/= Excel.Workbook([Custom], true) That converts them all to tables for additional use… but… weird stuff happens. some of the reports are already tables and I get duplicatessome of the reports are sheets not tables and THOSE workbooks have multiple sheets. One sheet is the data I want and the other sheets are pivot or formula tables.I just want to bring in the data sheet. Since I’m automating it, I’m happy to spend the time now typing in the name of the sheet if there is a formula for that. Q1 – how do I keep from getting duplicate entries opening a single table workbookQ2 – how do I get Folder.File to open one sheet of a workbook thanks! mm Read More
confusion matrix from the classification learner app.
how can i calculate metrics from the trained model with classification learnerhow can i calculate metrics from the trained model with classification learner how can i calculate metrics from the trained model with classification learner matlab, classification, classification learner, confusion matrix, sensitivity, precision, metrics MATLAB Answers — New Questions
Error with find Function in MATLAB: “Incorrect number or types of inputs or outputs”
Hello,
I am encountering an error in MATLAB when using the find function in my code. The error message is:
Error using find Incorrect number or types of inputs or outputs for function ‘find’.
The error occurs in the following function:
function SNR_matrix = Compute_SNR(K, N, M, A, z,…);
SNR_matrix = optimexpr(K, N, M);
for v = 1:M
for s = 1:K
for n = 1:N
Arg1 = find(A(s, :, v), 1); % This line causes the error
% [Additional code here]
end
end
end
end
and ”A” is a Binary decision variable
A = optimvar(‘A’, K, N, M, ‘Type’, ‘integer’, ‘LowerBound’, 0, ‘UpperBound’, 1);
How can I resolve this error? Are there specific issues with how find is used with multi-dimensional arrays? What adjustments should I make to ensure that the find function works correctly in this context?
Any Help will be appreciated.
Thanks in advance!Hello,
I am encountering an error in MATLAB when using the find function in my code. The error message is:
Error using find Incorrect number or types of inputs or outputs for function ‘find’.
The error occurs in the following function:
function SNR_matrix = Compute_SNR(K, N, M, A, z,…);
SNR_matrix = optimexpr(K, N, M);
for v = 1:M
for s = 1:K
for n = 1:N
Arg1 = find(A(s, :, v), 1); % This line causes the error
% [Additional code here]
end
end
end
end
and ”A” is a Binary decision variable
A = optimvar(‘A’, K, N, M, ‘Type’, ‘integer’, ‘LowerBound’, 0, ‘UpperBound’, 1);
How can I resolve this error? Are there specific issues with how find is used with multi-dimensional arrays? What adjustments should I make to ensure that the find function works correctly in this context?
Any Help will be appreciated.
Thanks in advance! Hello,
I am encountering an error in MATLAB when using the find function in my code. The error message is:
Error using find Incorrect number or types of inputs or outputs for function ‘find’.
The error occurs in the following function:
function SNR_matrix = Compute_SNR(K, N, M, A, z,…);
SNR_matrix = optimexpr(K, N, M);
for v = 1:M
for s = 1:K
for n = 1:N
Arg1 = find(A(s, :, v), 1); % This line causes the error
% [Additional code here]
end
end
end
end
and ”A” is a Binary decision variable
A = optimvar(‘A’, K, N, M, ‘Type’, ‘integer’, ‘LowerBound’, 0, ‘UpperBound’, 1);
How can I resolve this error? Are there specific issues with how find is used with multi-dimensional arrays? What adjustments should I make to ensure that the find function works correctly in this context?
Any Help will be appreciated.
Thanks in advance! error, matlab code, find, function, optimization MATLAB Answers — New Questions
AptX Audio Codecs on X Elite Linup
Recently purchased the Sennheiser Momentum 4 and have been loving them. I also upgraded my Surface Pro 7 to the new Surface Pro 11 with the Qualcomm X Elite Chip. I was really excited because the chip supports the AptX Adaptive audio codec which is what the Momentum 4 uses for high quality audio, but when I tried it out today I’m only getting the AAC Codec (much lower quality).
Is this just a Windows issue? Will AptX support be coming in a future update? It would be really frustrating to not be able to listen to high quality playback because of a software issue
Recently purchased the Sennheiser Momentum 4 and have been loving them. I also upgraded my Surface Pro 7 to the new Surface Pro 11 with the Qualcomm X Elite Chip. I was really excited because the chip supports the AptX Adaptive audio codec which is what the Momentum 4 uses for high quality audio, but when I tried it out today I’m only getting the AAC Codec (much lower quality).Is this just a Windows issue? Will AptX support be coming in a future update? It would be really frustrating to not be able to listen to high quality playback because of a software issue Read More
Best way to redo a corrupted login | Intune
I work for an actively growing engineering firm and our domain is hybrid on-prem + AAD with a semi-recent rollout of Intune (so we are a little green with how it works)
One of my user’s computer login is showing signs of corruption so we wanted to backup and remove the profile from the machine without disrupting Intune enrollment or reinstalling Windows (which we will only do as a last resort with this user.)
Pre-MDM, removing was fairly easy from a service account which literally renaming that user folder in the Users folder then removing the user from Advanced System Settings. Then having the user sign back in which would rebuild a new, clean user profile.
But now, Intune is protecting the profile (as it was used to enroll in Intune) making this old process impossible. Even with network adapters disabled or in Safe Mode.
Is there a way to do re-do a corrupted user profile without removing the computer from the domain?
The delete option in Intune will remove a computer, but I noticed that re-enrolling in Intune with another account typically doesn’t work in our tenant. So, I am trying to avoid using the Delete option in Intune. A little guidance as we are new to Intune.
I work for an actively growing engineering firm and our domain is hybrid on-prem + AAD with a semi-recent rollout of Intune (so we are a little green with how it works)One of my user’s computer login is showing signs of corruption so we wanted to backup and remove the profile from the machine without disrupting Intune enrollment or reinstalling Windows (which we will only do as a last resort with this user.)Pre-MDM, removing was fairly easy from a service account which literally renaming that user folder in the Users folder then removing the user from Advanced System Settings. Then having the user sign back in which would rebuild a new, clean user profile.But now, Intune is protecting the profile (as it was used to enroll in Intune) making this old process impossible. Even with network adapters disabled or in Safe Mode.Is there a way to do re-do a corrupted user profile without removing the computer from the domain?The delete option in Intune will remove a computer, but I noticed that re-enrolling in Intune with another account typically doesn’t work in our tenant. So, I am trying to avoid using the Delete option in Intune. A little guidance as we are new to Intune. Read More
convert mat file to excel
how can i convert a mat file into an excel filehow can i convert a mat file into an excel file how can i convert a mat file into an excel file files, matlab MATLAB Answers — New Questions
How to write a subclass that `copies’ an instance of the superclass?
Basic Question: Can I make a copy of an instance of a class, but with a different version of one of the class’s methods?
Details: I have a class called Domain2d which has a method threePointQuadrature. I want to rewrite the threePointQuadrature method and run tests to compare the new method versus the old method. The idea I have is to make Domain2d_exp < Domain2d which is the same in every way as Domain2d, except I will write an experimental version of the threePointQuadrature method in Domain2d_exp.
My understanding is that subclasses inherit all methods from the superclass, but will run the subclass version of a method if the subclass has a method with the same name as one of the superclass methods. So, if I have dom (an instance of Domain2d) and dom_exp (an instance of Domain2d_exp) then when I call dom.threePointQuadrature, the original version of the function will be run, and when I call dom_exp.threePointQuadrature, the the experimental version of threePointQuadrature will be run.
Now, since Domain2d_exp < Domain2d I would normally write the constructor for Domain2d_exp to take the same parameters as Domain2d, and then just call the superclass constructor for Domain2d from within the constructor for Domain2d_exp. However, the issue in this case is that once a Domain2d object has been instantiated, it must be configured, which requires several other lines of code, and is somewhat costly in terms of time. So what I’d rather do is instantiate and configure dom, and instance of Domain2d, and then pass dom to the constructor for Domain2d_exp, which will retain all the properties and methods of dom, but with the experimental threePointQuadrature method.
Is this possible? Or, is there a better way to acheive the same end result?Basic Question: Can I make a copy of an instance of a class, but with a different version of one of the class’s methods?
Details: I have a class called Domain2d which has a method threePointQuadrature. I want to rewrite the threePointQuadrature method and run tests to compare the new method versus the old method. The idea I have is to make Domain2d_exp < Domain2d which is the same in every way as Domain2d, except I will write an experimental version of the threePointQuadrature method in Domain2d_exp.
My understanding is that subclasses inherit all methods from the superclass, but will run the subclass version of a method if the subclass has a method with the same name as one of the superclass methods. So, if I have dom (an instance of Domain2d) and dom_exp (an instance of Domain2d_exp) then when I call dom.threePointQuadrature, the original version of the function will be run, and when I call dom_exp.threePointQuadrature, the the experimental version of threePointQuadrature will be run.
Now, since Domain2d_exp < Domain2d I would normally write the constructor for Domain2d_exp to take the same parameters as Domain2d, and then just call the superclass constructor for Domain2d from within the constructor for Domain2d_exp. However, the issue in this case is that once a Domain2d object has been instantiated, it must be configured, which requires several other lines of code, and is somewhat costly in terms of time. So what I’d rather do is instantiate and configure dom, and instance of Domain2d, and then pass dom to the constructor for Domain2d_exp, which will retain all the properties and methods of dom, but with the experimental threePointQuadrature method.
Is this possible? Or, is there a better way to acheive the same end result? Basic Question: Can I make a copy of an instance of a class, but with a different version of one of the class’s methods?
Details: I have a class called Domain2d which has a method threePointQuadrature. I want to rewrite the threePointQuadrature method and run tests to compare the new method versus the old method. The idea I have is to make Domain2d_exp < Domain2d which is the same in every way as Domain2d, except I will write an experimental version of the threePointQuadrature method in Domain2d_exp.
My understanding is that subclasses inherit all methods from the superclass, but will run the subclass version of a method if the subclass has a method with the same name as one of the superclass methods. So, if I have dom (an instance of Domain2d) and dom_exp (an instance of Domain2d_exp) then when I call dom.threePointQuadrature, the original version of the function will be run, and when I call dom_exp.threePointQuadrature, the the experimental version of threePointQuadrature will be run.
Now, since Domain2d_exp < Domain2d I would normally write the constructor for Domain2d_exp to take the same parameters as Domain2d, and then just call the superclass constructor for Domain2d from within the constructor for Domain2d_exp. However, the issue in this case is that once a Domain2d object has been instantiated, it must be configured, which requires several other lines of code, and is somewhat costly in terms of time. So what I’d rather do is instantiate and configure dom, and instance of Domain2d, and then pass dom to the constructor for Domain2d_exp, which will retain all the properties and methods of dom, but with the experimental threePointQuadrature method.
Is this possible? Or, is there a better way to acheive the same end result? classes, constructors MATLAB Answers — New Questions
