Author: PuTI
Prescribed time disturbance observer does not estimate in prescribed settling time.
Hi, I hope you are feeling well. I have designed a prescribed time disturbance observer based on the idea that was used to design a prescribed time controller. First, I have apllied the controller to a first order and then to a third order system.
*The problem I have is that the disturbance observer does not work in a prescribed time, I change the settling time, but it still works in a fixed settling time that is around 1.5 seconds. I have attached the simulink model here. I really appreciate your help if you can tell me how I can solve the problem.*Hi, I hope you are feeling well. I have designed a prescribed time disturbance observer based on the idea that was used to design a prescribed time controller. First, I have apllied the controller to a first order and then to a third order system.
*The problem I have is that the disturbance observer does not work in a prescribed time, I change the settling time, but it still works in a fixed settling time that is around 1.5 seconds. I have attached the simulink model here. I really appreciate your help if you can tell me how I can solve the problem.* Hi, I hope you are feeling well. I have designed a prescribed time disturbance observer based on the idea that was used to design a prescribed time controller. First, I have apllied the controller to a first order and then to a third order system.
*The problem I have is that the disturbance observer does not work in a prescribed time, I change the settling time, but it still works in a fixed settling time that is around 1.5 seconds. I have attached the simulink model here. I really appreciate your help if you can tell me how I can solve the problem.* control, disturbance observer, prescribed time MATLAB Answers — New Questions
First value of an array does not display with a decimal
I am trying to print an array which display the values of x y and z on every change of x and z, but the first value os always formated a different way if z is an integer. Here is the awnser I get:
And here is my code:
zp=input(‘Įveskite pradinę z vertę: ‘);
zg=input(‘Įveskite galutinę z vertę: ‘);
hz=input(‘Įveskite z vertės pokytį: ‘);
xp=4;
hx=0.3;
x=xp;
disp(‘ x y z’);
for z=zp:hz:zg
if z>=x
y=sin(x).*cos(x);
else
y=log10(xp).*log(z);
end
disp([x y z]);
x=x+hx;
endI am trying to print an array which display the values of x y and z on every change of x and z, but the first value os always formated a different way if z is an integer. Here is the awnser I get:
And here is my code:
zp=input(‘Įveskite pradinę z vertę: ‘);
zg=input(‘Įveskite galutinę z vertę: ‘);
hz=input(‘Įveskite z vertės pokytį: ‘);
xp=4;
hx=0.3;
x=xp;
disp(‘ x y z’);
for z=zp:hz:zg
if z>=x
y=sin(x).*cos(x);
else
y=log10(xp).*log(z);
end
disp([x y z]);
x=x+hx;
end I am trying to print an array which display the values of x y and z on every change of x and z, but the first value os always formated a different way if z is an integer. Here is the awnser I get:
And here is my code:
zp=input(‘Įveskite pradinę z vertę: ‘);
zg=input(‘Įveskite galutinę z vertę: ‘);
hz=input(‘Įveskite z vertės pokytį: ‘);
xp=4;
hx=0.3;
x=xp;
disp(‘ x y z’);
for z=zp:hz:zg
if z>=x
y=sin(x).*cos(x);
else
y=log10(xp).*log(z);
end
disp([x y z]);
x=x+hx;
end display, format, decimal, array MATLAB Answers — New Questions
Change value of stream mass flow in HYSYS using matlab
I want to set the value of stream ‘PFD136’ to flow_136. Seems I have a syntax error. Please helpI want to set the value of stream ‘PFD136’ to flow_136. Seems I have a syntax error. Please help I want to set the value of stream ‘PFD136’ to flow_136. Seems I have a syntax error. Please help hysys, hysysinterface, setvalue MATLAB Answers — New Questions
How do I contact the authors of the blog “Generative AI + Robotics = Awesome!”
The blog Generative AI + Robotics = Awesome! says "you can reach out to us directly to request trial code access" yet there is no details of whom to contact or how. I feel I may be missing something obvious. Can anybody help me to get in contact with the Authors.The blog Generative AI + Robotics = Awesome! says "you can reach out to us directly to request trial code access" yet there is no details of whom to contact or how. I feel I may be missing something obvious. Can anybody help me to get in contact with the Authors. The blog Generative AI + Robotics = Awesome! says "you can reach out to us directly to request trial code access" yet there is no details of whom to contact or how. I feel I may be missing something obvious. Can anybody help me to get in contact with the Authors. robotics vla blog. MATLAB Answers — New Questions
Help, how to make a buck chopper simulation using SCR only ?
i want to know how to make a buck chopper simulation in MATLAB using only SCR without mosfet/IGBT is it possible ?i want to know how to make a buck chopper simulation in MATLAB using only SCR without mosfet/IGBT is it possible ? i want to know how to make a buck chopper simulation in MATLAB using only SCR without mosfet/IGBT is it possible ? buck, chopper MATLAB Answers — New Questions
Simulink Hanging when I try to save a simple model
Version: MATLAB_R2025b
Laptop: Macbook Pro M3 Max
I just started learning to use MATLAB and Simulink. I am on a Macbook pro M3 Max (36GB of RAM, 14 CPU cores). MATLAB is the first program I have had on this laptop to be so slow and unresponsive.
I have found workarounds for many of the problems I faced, but when I try to save a very basic Simulink model (see photo), both MATLAB and Simulink become unresponsive (see photo) and I have to force quit and restart just to be able to do anything. Can I get some help with this?Version: MATLAB_R2025b
Laptop: Macbook Pro M3 Max
I just started learning to use MATLAB and Simulink. I am on a Macbook pro M3 Max (36GB of RAM, 14 CPU cores). MATLAB is the first program I have had on this laptop to be so slow and unresponsive.
I have found workarounds for many of the problems I faced, but when I try to save a very basic Simulink model (see photo), both MATLAB and Simulink become unresponsive (see photo) and I have to force quit and restart just to be able to do anything. Can I get some help with this? Version: MATLAB_R2025b
Laptop: Macbook Pro M3 Max
I just started learning to use MATLAB and Simulink. I am on a Macbook pro M3 Max (36GB of RAM, 14 CPU cores). MATLAB is the first program I have had on this laptop to be so slow and unresponsive.
I have found workarounds for many of the problems I faced, but when I try to save a very basic Simulink model (see photo), both MATLAB and Simulink become unresponsive (see photo) and I have to force quit and restart just to be able to do anything. Can I get some help with this? simulink, save, model MATLAB Answers — New Questions
Add Tooltip to each UI Tree Checkbox in App Designer
In App Desinger I want to add tooltips to each ui tree checkbox, so here each checkbox shall tell the user more of what is done or checked with the check exactly. Example: For "Block Colors" a tooltip might show something like "Checks if each Simulink Block has its dedicated color as defined by the company guidelines". Is there an option, as I can only find to add a tooltip to the parent CheckBoxTree but not each individual checkbox? Thank you.In App Desinger I want to add tooltips to each ui tree checkbox, so here each checkbox shall tell the user more of what is done or checked with the check exactly. Example: For "Block Colors" a tooltip might show something like "Checks if each Simulink Block has its dedicated color as defined by the company guidelines". Is there an option, as I can only find to add a tooltip to the parent CheckBoxTree but not each individual checkbox? Thank you. In App Desinger I want to add tooltips to each ui tree checkbox, so here each checkbox shall tell the user more of what is done or checked with the check exactly. Example: For "Block Colors" a tooltip might show something like "Checks if each Simulink Block has its dedicated color as defined by the company guidelines". Is there an option, as I can only find to add a tooltip to the parent CheckBoxTree but not each individual checkbox? Thank you. appdesigner, matlab gui, checkbox MATLAB Answers — New Questions
The single function is not behaving as expected
I’m trying to use single to save disk space because my files are very large. I know it could affect the precision if my numbers have many places after the decimal point. However, it is altering my integers as well.
>> single(340580097)
ans =
340580096.00
Is this a bug?I’m trying to use single to save disk space because my files are very large. I know it could affect the precision if my numbers have many places after the decimal point. However, it is altering my integers as well.
>> single(340580097)
ans =
340580096.00
Is this a bug? I’m trying to use single to save disk space because my files are very large. I know it could affect the precision if my numbers have many places after the decimal point. However, it is altering my integers as well.
>> single(340580097)
ans =
340580096.00
Is this a bug? single MATLAB Answers — New Questions
I am unable to make the new vesion of spectrumAnalyzer show distortion measurements.
I have a Matlab script that has worked fine in R2021b and earlier which I still use today. It simply reads my audio on a Macbook Pro running MacOS 12 and presents a spectrum on the analyzer. Moving that script to the new R2025b and modifying the script to call the new spectrum analyzer seems to work to present the spectrum but when I select "Measurements" and "Distortion" the distortion data appears but does not seem to find the main tone and in-turn the harmonics. I am stuck using the old version of Matlab since that works. I think I may be missing a configuration command on the new analyzer that wasn’t required on the old one. The tone below is on CH1 and CH2 identically. CH2 appears in front of CH1.I have a Matlab script that has worked fine in R2021b and earlier which I still use today. It simply reads my audio on a Macbook Pro running MacOS 12 and presents a spectrum on the analyzer. Moving that script to the new R2025b and modifying the script to call the new spectrum analyzer seems to work to present the spectrum but when I select "Measurements" and "Distortion" the distortion data appears but does not seem to find the main tone and in-turn the harmonics. I am stuck using the old version of Matlab since that works. I think I may be missing a configuration command on the new analyzer that wasn’t required on the old one. The tone below is on CH1 and CH2 identically. CH2 appears in front of CH1. I have a Matlab script that has worked fine in R2021b and earlier which I still use today. It simply reads my audio on a Macbook Pro running MacOS 12 and presents a spectrum on the analyzer. Moving that script to the new R2025b and modifying the script to call the new spectrum analyzer seems to work to present the spectrum but when I select "Measurements" and "Distortion" the distortion data appears but does not seem to find the main tone and in-turn the harmonics. I am stuck using the old version of Matlab since that works. I think I may be missing a configuration command on the new analyzer that wasn’t required on the old one. The tone below is on CH1 and CH2 identically. CH2 appears in front of CH1. spectrumanalyzer MATLAB Answers — New Questions
Generate Graph Nodes and add buttondown callbacks for interactivity
I’m trying to create a graph that brings up a dialogue box when one of the nodes is clicked. I use
NodeTable = table(‘Size’,[0 4],’VariableTypes’,{‘double’,’string’,’double’,’double’}, …
‘VariableNames’,{‘Code’,’Name’,’Latitude’,’Longitude’});
EdgeTable = table(‘Size’,[0 2],’VariableTypes’,{‘cell’, ‘double’}, …
‘VariableNames’,{‘EndNodes’,’Distance’});
nodetemp = inputdlg(["Node Name", "Latitude", "Longitude"], "Node Details");
%check input present
if isempty(nodetemp)== 0
%check node not present in table
if any(matches(app.NodeTable.Name,nodetemp(1),IgnoreCase=true))==false
%format table and add code in column 1
nodeinp = addvars(cell2table(transpose(nodetemp),’VariableNames’,{‘Name’,’Latitude’,’Longitude’}), app.index, ‘before’, 1,’NewVariableNames’,{‘Code’});
%update graph with node data
app.NodeTable=[app.NodeTable; nodeinp];
app.G=addnode(app.G,nodeinp);
app.map = plot(app.UIAxes,app.G,’NodeLabel’,app.G.Nodes.Name,’EdgeLabel’,app.G.Edges.Distance);%plot graph
%set node coordinates
app.map.XData = str2double(app.NodeTable.Longitude);
app.map.YData = str2double(app.NodeTable.Latitude);
app.index = app.index + 1; %increment node counter
end
end
to create the graph, add nodes and plot it. I then am attempting to use
nodes=findobj(app.map,’Marker’,’o’);
nodesLength = length(nodes);
for count=1:nodesLength
nodes(count).ButtonDownFcn=@(src,event)nodeButtonDown(app,count);
end
to get a hold of the node graphical objects and assign callbacks as advised here but the plot doesn’t seem to generate the nodes as children/separate objects like it says in all the documentation. The nodes variable just becomes a copy of the graphplot object. You’ll notice I’m using the app designer.I’m trying to create a graph that brings up a dialogue box when one of the nodes is clicked. I use
NodeTable = table(‘Size’,[0 4],’VariableTypes’,{‘double’,’string’,’double’,’double’}, …
‘VariableNames’,{‘Code’,’Name’,’Latitude’,’Longitude’});
EdgeTable = table(‘Size’,[0 2],’VariableTypes’,{‘cell’, ‘double’}, …
‘VariableNames’,{‘EndNodes’,’Distance’});
nodetemp = inputdlg(["Node Name", "Latitude", "Longitude"], "Node Details");
%check input present
if isempty(nodetemp)== 0
%check node not present in table
if any(matches(app.NodeTable.Name,nodetemp(1),IgnoreCase=true))==false
%format table and add code in column 1
nodeinp = addvars(cell2table(transpose(nodetemp),’VariableNames’,{‘Name’,’Latitude’,’Longitude’}), app.index, ‘before’, 1,’NewVariableNames’,{‘Code’});
%update graph with node data
app.NodeTable=[app.NodeTable; nodeinp];
app.G=addnode(app.G,nodeinp);
app.map = plot(app.UIAxes,app.G,’NodeLabel’,app.G.Nodes.Name,’EdgeLabel’,app.G.Edges.Distance);%plot graph
%set node coordinates
app.map.XData = str2double(app.NodeTable.Longitude);
app.map.YData = str2double(app.NodeTable.Latitude);
app.index = app.index + 1; %increment node counter
end
end
to create the graph, add nodes and plot it. I then am attempting to use
nodes=findobj(app.map,’Marker’,’o’);
nodesLength = length(nodes);
for count=1:nodesLength
nodes(count).ButtonDownFcn=@(src,event)nodeButtonDown(app,count);
end
to get a hold of the node graphical objects and assign callbacks as advised here but the plot doesn’t seem to generate the nodes as children/separate objects like it says in all the documentation. The nodes variable just becomes a copy of the graphplot object. You’ll notice I’m using the app designer. I’m trying to create a graph that brings up a dialogue box when one of the nodes is clicked. I use
NodeTable = table(‘Size’,[0 4],’VariableTypes’,{‘double’,’string’,’double’,’double’}, …
‘VariableNames’,{‘Code’,’Name’,’Latitude’,’Longitude’});
EdgeTable = table(‘Size’,[0 2],’VariableTypes’,{‘cell’, ‘double’}, …
‘VariableNames’,{‘EndNodes’,’Distance’});
nodetemp = inputdlg(["Node Name", "Latitude", "Longitude"], "Node Details");
%check input present
if isempty(nodetemp)== 0
%check node not present in table
if any(matches(app.NodeTable.Name,nodetemp(1),IgnoreCase=true))==false
%format table and add code in column 1
nodeinp = addvars(cell2table(transpose(nodetemp),’VariableNames’,{‘Name’,’Latitude’,’Longitude’}), app.index, ‘before’, 1,’NewVariableNames’,{‘Code’});
%update graph with node data
app.NodeTable=[app.NodeTable; nodeinp];
app.G=addnode(app.G,nodeinp);
app.map = plot(app.UIAxes,app.G,’NodeLabel’,app.G.Nodes.Name,’EdgeLabel’,app.G.Edges.Distance);%plot graph
%set node coordinates
app.map.XData = str2double(app.NodeTable.Longitude);
app.map.YData = str2double(app.NodeTable.Latitude);
app.index = app.index + 1; %increment node counter
end
end
to create the graph, add nodes and plot it. I then am attempting to use
nodes=findobj(app.map,’Marker’,’o’);
nodesLength = length(nodes);
for count=1:nodesLength
nodes(count).ButtonDownFcn=@(src,event)nodeButtonDown(app,count);
end
to get a hold of the node graphical objects and assign callbacks as advised here but the plot doesn’t seem to generate the nodes as children/separate objects like it says in all the documentation. The nodes variable just becomes a copy of the graphplot object. You’ll notice I’m using the app designer. axes, appdesigner, app designer, callback, graph, graphics, plot, plotting, gui, objects, find, nodes, children, interactivity, programmatic, class, assign MATLAB Answers — New Questions
How can I view the Speedgoat target screen and system log on my host computer?
Can I view the display connected to my Speedgoat target on my host computer to monitor the Simulink Real-Time (SLRT) simulation and take screenshots?Can I view the display connected to my Speedgoat target on my host computer to monitor the Simulink Real-Time (SLRT) simulation and take screenshots? Can I view the display connected to my Speedgoat target on my host computer to monitor the Simulink Real-Time (SLRT) simulation and take screenshots? slrt, targetscreen, statusmonitor, systemlog, console, log MATLAB Answers — New Questions
