Hello,
I have a numerical time series of voltage V(t) and aim to derive the analytical equation for the charge q(t)q(t)q(t) in an RLC circuit. The relationship between V(t), q(t), and the circuit parameters R, L, and C is governed by the following equation:
V(t) = R * dq/dt + L * d2q/dt2 + (1/C) * q(t)
I have attempted the following steps to estimate the parameters R, L, and C:
q(t); I calculated the charge q(t)as the cumulative integral of V(t), assuming a constant time step (delta_t):
q(t) = sum(V(t) * delta_t)
Computing Derivatives: I computed the first and second derivatives of q(t) numerically using finite differences:
The first derivative (dq/dt): dq/dt = (q(t+delta_t) – q(t)) / delta_t
The second derivative (d2q/dt2): d2q/dt2 = (dq/dt at t+delta_t – dq/dt at t) / delta_t
Creating the Matrix A:I created a matrix A and a vector V to represent the system of equations:
Matrix A has three columns:
The first column contains q(t),
The second column contains dq/dt,
The third column contains d2q/dt2.
Vector V contains the voltage values V(t).
Estimating Parameters:I solved for the parameters R, L, and C using the least-squares method: X = inv(A’ * A) * A’ * V.
Here, X contains the values [1/C, R, L].
Extracting Parameters:I extracted the parameter values from X as follows: C = 1 / X(1), R = X(2), L = X(3)
While I successfully estimated the parameters R, L, and C, I have not been able to derive the analytical equation for q(t). My goal is to find the closed-form expression for q(t) using these parameters and the RLC circuit equation.
How can I derive an analytical expression for q(t)q(t)q(t) from the RLC circuit equation?
Since V(t)V(t)V(t) is provided as numerical data, is there a way to approximate q(t)q(t)q(t) in a closed form?
Are there any MATLAB tools or functions that can handle this type of numerical differential equation?Hello,
I have a numerical time series of voltage V(t) and aim to derive the analytical equation for the charge q(t)q(t)q(t) in an RLC circuit. The relationship between V(t), q(t), and the circuit parameters R, L, and C is governed by the following equation:
V(t) = R * dq/dt + L * d2q/dt2 + (1/C) * q(t)
I have attempted the following steps to estimate the parameters R, L, and C:
q(t); I calculated the charge q(t)as the cumulative integral of V(t), assuming a constant time step (delta_t):
q(t) = sum(V(t) * delta_t)
Computing Derivatives: I computed the first and second derivatives of q(t) numerically using finite differences:
The first derivative (dq/dt): dq/dt = (q(t+delta_t) – q(t)) / delta_t
The second derivative (d2q/dt2): d2q/dt2 = (dq/dt at t+delta_t – dq/dt at t) / delta_t
Creating the Matrix A:I created a matrix A and a vector V to represent the system of equations:
Matrix A has three columns:
The first column contains q(t),
The second column contains dq/dt,
The third column contains d2q/dt2.
Vector V contains the voltage values V(t).
Estimating Parameters:I solved for the parameters R, L, and C using the least-squares method: X = inv(A’ * A) * A’ * V.
Here, X contains the values [1/C, R, L].
Extracting Parameters:I extracted the parameter values from X as follows: C = 1 / X(1), R = X(2), L = X(3)
While I successfully estimated the parameters R, L, and C, I have not been able to derive the analytical equation for q(t). My goal is to find the closed-form expression for q(t) using these parameters and the RLC circuit equation.
How can I derive an analytical expression for q(t)q(t)q(t) from the RLC circuit equation?
Since V(t)V(t)V(t) is provided as numerical data, is there a way to approximate q(t)q(t)q(t) in a closed form?
Are there any MATLAB tools or functions that can handle this type of numerical differential equation? Hello,
I have a numerical time series of voltage V(t) and aim to derive the analytical equation for the charge q(t)q(t)q(t) in an RLC circuit. The relationship between V(t), q(t), and the circuit parameters R, L, and C is governed by the following equation:
V(t) = R * dq/dt + L * d2q/dt2 + (1/C) * q(t)
I have attempted the following steps to estimate the parameters R, L, and C:
q(t); I calculated the charge q(t)as the cumulative integral of V(t), assuming a constant time step (delta_t):
q(t) = sum(V(t) * delta_t)
Computing Derivatives: I computed the first and second derivatives of q(t) numerically using finite differences:
The first derivative (dq/dt): dq/dt = (q(t+delta_t) – q(t)) / delta_t
The second derivative (d2q/dt2): d2q/dt2 = (dq/dt at t+delta_t – dq/dt at t) / delta_t
Creating the Matrix A:I created a matrix A and a vector V to represent the system of equations:
Matrix A has three columns:
The first column contains q(t),
The second column contains dq/dt,
The third column contains d2q/dt2.
Vector V contains the voltage values V(t).
Estimating Parameters:I solved for the parameters R, L, and C using the least-squares method: X = inv(A’ * A) * A’ * V.
Here, X contains the values [1/C, R, L].
Extracting Parameters:I extracted the parameter values from X as follows: C = 1 / X(1), R = X(2), L = X(3)
While I successfully estimated the parameters R, L, and C, I have not been able to derive the analytical equation for q(t). My goal is to find the closed-form expression for q(t) using these parameters and the RLC circuit equation.
How can I derive an analytical expression for q(t)q(t)q(t) from the RLC circuit equation?
Since V(t)V(t)V(t) is provided as numerical data, is there a way to approximate q(t)q(t)q(t) in a closed form?
Are there any MATLAB tools or functions that can handle this type of numerical differential equation? curve fitting, model MATLAB Answers — New Questions

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I am getting the error failed to load custom code library c:Armourydislibslprj_slcchpQwdVE1r6v1WgDG7ExooD_cclib.dll
Im not exactly sure how to resolve this issue – The library I am trying to call is not named such gobbledygook characters but matlab appears to have a mind of its own.

Actual C library is indicated as below along with the relavent header files.I am getting the error failed to load custom code library c:Armourydislibslprj_slcchpQwdVE1r6v1WgDG7ExooD_cclib.dll
Im not exactly sure how to resolve this issue – The library I am trying to call is not named such gobbledygook characters but matlab appears to have a mind of its own.

Actual C library is indicated as below along with the relavent header files. I am getting the error failed to load custom code library c:Armourydislibslprj_slcchpQwdVE1r6v1WgDG7ExooD_cclib.dll
Im not exactly sure how to resolve this issue – The library I am trying to call is not named such gobbledygook characters but matlab appears to have a mind of its own.

Actual C library is indicated as below along with the relavent header files. dll calls, simulink, matlab MATLAB Answers — New Questions

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Hello All,
I am working on object detection and tracking using veloyne lidar point cloud data (PCAP) without using Deep learning. I am a beginner, please guide me how to start with.
Thanks in advanceHello All,
I am working on object detection and tracking using veloyne lidar point cloud data (PCAP) without using Deep learning. I am a beginner, please guide me how to start with.
Thanks in advance Hello All,
I am working on object detection and tracking using veloyne lidar point cloud data (PCAP) without using Deep learning. I am a beginner, please guide me how to start with.
Thanks in advance lidar, velodyne, point cloud data, object detection, object tracking, 3d, pcd, lidar data processing, point cloud application, point cloud MATLAB Answers — New Questions

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Is there any document from Mathworks adressing CVE-2024-7264 mitigations or just plain "does not affect Mathworks Matlab products"Is there any document from Mathworks adressing CVE-2024-7264 mitigations or just plain "does not affect Mathworks Matlab products" Is there any document from Mathworks adressing CVE-2024-7264 mitigations or just plain "does not affect Mathworks Matlab products" cve, acas MATLAB Answers — New Questions

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When I run the first two code segments I get NaN/NaT or just no output but no error and when I the last two I get the error "Unrecognized function or variable ‘gpsdev’. I have tested the set up using the arduinoIDE and I get proper GPS output through that. I have also checked the baud rate, the communication between the esp32 and computer and that there is proper physical connection. Do you know why I am getting this error/no output? What is the best method to trouble shoot these errors? Any tips would be greatly appreciated. Thank you.

1.
a = arduino(‘COM3′,’ESP32-WROOM-DevKitC’,’Libraries’,’Serial’)
gps = gpsdev(a)
gpsData = gps.read;
latitude = gpsData.LLA(1);
longitude = gpsData.LLA(2);
gpsTime = gpsData.GPSReceiverTime;
% GPS returns UTC datetime. Convert it into system time zone.
gpsTime.TimeZone = ‘local’;
if(~isnan(latitude) && ~isnan(longitude))
% plot the position in geographic coordinates
fig = geoplot(latitude,longitude,’Marker’,"o",’MarkerSize’,6,’Color’,’red’,’MarkerFaceColor’,’red’);
% Sets the latitude and longitude limits of the base Map
geolimits([latitude-0.05,latitude+0.05],[longitude-0.05,longitude+0.05]) ;
% Selects the basemap
geobasemap streets;
timeString = strcat("Timestamp: ",string(gpsTime));

2.
a = arduino(‘COM3′,’ESP32-WROOM-DevKitC’,’Libraries’,’Serial’)
gps = gpsdev(a)
[tt,overruns] = read(gps)

3.
gps = gpsdev(‘COM4′,’OutputFormat’,"timetable")
[tt,overruns] = read(gps)
release(gps)
gps.SamplesPerRead = 2;
read(gps)

4.
s = serialport(‘COM3’, 9600)
gps = gpsdev(s,’OutputFormat’,"matrix")
[lla,speed,course,dops,gpsReceiverTime,timestamp,overruns] = read(gps)

%delete(gps);
%clear gps;
%clear a;

*These codes are adapted from MATWORKS references either by staff or other usersWhen I run the first two code segments I get NaN/NaT or just no output but no error and when I the last two I get the error "Unrecognized function or variable ‘gpsdev’. I have tested the set up using the arduinoIDE and I get proper GPS output through that. I have also checked the baud rate, the communication between the esp32 and computer and that there is proper physical connection. Do you know why I am getting this error/no output? What is the best method to trouble shoot these errors? Any tips would be greatly appreciated. Thank you.

1.
a = arduino(‘COM3′,’ESP32-WROOM-DevKitC’,’Libraries’,’Serial’)
gps = gpsdev(a)
gpsData = gps.read;
latitude = gpsData.LLA(1);
longitude = gpsData.LLA(2);
gpsTime = gpsData.GPSReceiverTime;
% GPS returns UTC datetime. Convert it into system time zone.
gpsTime.TimeZone = ‘local’;
if(~isnan(latitude) && ~isnan(longitude))
% plot the position in geographic coordinates
fig = geoplot(latitude,longitude,’Marker’,"o",’MarkerSize’,6,’Color’,’red’,’MarkerFaceColor’,’red’);
% Sets the latitude and longitude limits of the base Map
geolimits([latitude-0.05,latitude+0.05],[longitude-0.05,longitude+0.05]) ;
% Selects the basemap
geobasemap streets;
timeString = strcat("Timestamp: ",string(gpsTime));

2.
a = arduino(‘COM3′,’ESP32-WROOM-DevKitC’,’Libraries’,’Serial’)
gps = gpsdev(a)
[tt,overruns] = read(gps)

3.
gps = gpsdev(‘COM4′,’OutputFormat’,"timetable")
[tt,overruns] = read(gps)
release(gps)
gps.SamplesPerRead = 2;
read(gps)

4.
s = serialport(‘COM3’, 9600)
gps = gpsdev(s,’OutputFormat’,"matrix")
[lla,speed,course,dops,gpsReceiverTime,timestamp,overruns] = read(gps)

%delete(gps);
%clear gps;
%clear a;

*These codes are adapted from MATWORKS references either by staff or other users When I run the first two code segments I get NaN/NaT or just no output but no error and when I the last two I get the error "Unrecognized function or variable ‘gpsdev’. I have tested the set up using the arduinoIDE and I get proper GPS output through that. I have also checked the baud rate, the communication between the esp32 and computer and that there is proper physical connection. Do you know why I am getting this error/no output? What is the best method to trouble shoot these errors? Any tips would be greatly appreciated. Thank you.

1.
a = arduino(‘COM3′,’ESP32-WROOM-DevKitC’,’Libraries’,’Serial’)
gps = gpsdev(a)
gpsData = gps.read;
latitude = gpsData.LLA(1);
longitude = gpsData.LLA(2);
gpsTime = gpsData.GPSReceiverTime;
% GPS returns UTC datetime. Convert it into system time zone.
gpsTime.TimeZone = ‘local’;
if(~isnan(latitude) && ~isnan(longitude))
% plot the position in geographic coordinates
fig = geoplot(latitude,longitude,’Marker’,"o",’MarkerSize’,6,’Color’,’red’,’MarkerFaceColor’,’red’);
% Sets the latitude and longitude limits of the base Map
geolimits([latitude-0.05,latitude+0.05],[longitude-0.05,longitude+0.05]) ;
% Selects the basemap
geobasemap streets;
timeString = strcat("Timestamp: ",string(gpsTime));

2.
a = arduino(‘COM3′,’ESP32-WROOM-DevKitC’,’Libraries’,’Serial’)
gps = gpsdev(a)
[tt,overruns] = read(gps)

3.
gps = gpsdev(‘COM4′,’OutputFormat’,"timetable")
[tt,overruns] = read(gps)
release(gps)
gps.SamplesPerRead = 2;
read(gps)

4.
s = serialport(‘COM3’, 9600)
gps = gpsdev(s,’OutputFormat’,"matrix")
[lla,speed,course,dops,gpsReceiverTime,timestamp,overruns] = read(gps)

%delete(gps);
%clear gps;
%clear a;

*These codes are adapted from MATWORKS references either by staff or other users gps, esp32, gpsdev, gt-u7, serialport, read() MATLAB Answers — New Questions

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I try this code to delete all row and column with all zero values in them. It simply works for deleting the columns with all zero values abut it does not work for rows! Can anybody please help me?

data=[0 0 0 0 0 0 0 0; 0 0 2 3 4 0 1 0; 0 0 1 2 3 0 0 0];

data( all( ~any( data), 2 ), : ) = []; % removes all rows with all zero

data( :, all( ~any( data ), 1 ) ) = []; % and columns

I mean the first line (% removes all rows with all zero) does not work!I try this code to delete all row and column with all zero values in them. It simply works for deleting the columns with all zero values abut it does not work for rows! Can anybody please help me?

data=[0 0 0 0 0 0 0 0; 0 0 2 3 4 0 1 0; 0 0 1 2 3 0 0 0];

data( all( ~any( data), 2 ), : ) = []; % removes all rows with all zero

data( :, all( ~any( data ), 1 ) ) = []; % and columns

I mean the first line (% removes all rows with all zero) does not work! I try this code to delete all row and column with all zero values in them. It simply works for deleting the columns with all zero values abut it does not work for rows! Can anybody please help me?

data=[0 0 0 0 0 0 0 0; 0 0 2 3 4 0 1 0; 0 0 1 2 3 0 0 0];

data( all( ~any( data), 2 ), : ) = []; % removes all rows with all zero

data( :, all( ~any( data ), 1 ) ) = []; % and columns

I mean the first line (% removes all rows with all zero) does not work! matrix, array, zeros, delete MATLAB Answers — New Questions

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Unable to perform assignment because the left and right sides have a different number of elements.

Error in EM_RTSS>kalman_filter (line 144)
Z_estimates(n) = Z_est; % Store state estimate

Error in EM_RTSS (line 40)
[Z_estimates, P_estimates] = kalman_filter(A, B, S, sigma, mu1, S1, temp);Unable to perform assignment because the left and right sides have a different number of elements.

Error in EM_RTSS>kalman_filter (line 144)
Z_estimates(n) = Z_est; % Store state estimate

Error in EM_RTSS (line 40)
[Z_estimates, P_estimates] = kalman_filter(A, B, S, sigma, mu1, S1, temp); Unable to perform assignment because the left and right sides have a different number of elements.

Error in EM_RTSS>kalman_filter (line 144)
Z_estimates(n) = Z_est; % Store state estimate

Error in EM_RTSS (line 40)
[Z_estimates, P_estimates] = kalman_filter(A, B, S, sigma, mu1, S1, temp); kalman filter MATLAB Answers — New Questions

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Hello!
I was curious if it was possible to make the options of a radio button change based on another radio button.
This is a manually created example that shows visually what I want, but doesn’t actually work. If you pick a different category, the selection options automatically change:Hello!
I was curious if it was possible to make the options of a radio button change based on another radio button.
This is a manually created example that shows visually what I want, but doesn’t actually work. If you pick a different category, the selection options automatically change: Hello!
I was curious if it was possible to make the options of a radio button change based on another radio button.
This is a manually created example that shows visually what I want, but doesn’t actually work. If you pick a different category, the selection options automatically change: dashboard, radio button MATLAB Answers — New Questions

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Howdy,
I would like to extract the numbers inside the squares, how do you recommend I do it.Howdy,
I would like to extract the numbers inside the squares, how do you recommend I do it. Howdy,
I would like to extract the numbers inside the squares, how do you recommend I do it. image-processing, image analysis MATLAB Answers — New Questions

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I have an autonomous vehicle with a camera that follows a predetermined path. Ive already found a way to save each frame of the video and figure out which lat and long each frame belongs to, what im having trouble with is plotting the images in a for loop. I feel like im close, below is my code:
P = uigetdir(‘C:’);

S1 = dir(fullfile(P,’*.png’));

n_frame = numel(S1);

LatSize = size(Lat1, 1);
LongSize = size(Long1, 1);

FrameCount = LatSize/n_frame;

Lat = Lat1(1:FrameCount:end);
Long = Long1(1:FrameCount:end);

for i = 1:n_frame
F2 = fullfile(S1(i).name);
I{i} = imread(F2(i));
plot(Long, Lat)
axes(‘Position’, [Long(i,:) Lat(i,:) .5 .3])
imshow(I)
end
What am I missing here? I get this error when I run the code:
Unable to find file "F"
The various frames of the video are labeled Frame 0001.png, Frame 0002.png and so, there are 739 frames of the video and I want to plot each frame at the point they were recorded. My ultimate goal is to make it so you can click the plot and the picture will appear but ill deal with that part later. Any help is appreciated, thanks!I have an autonomous vehicle with a camera that follows a predetermined path. Ive already found a way to save each frame of the video and figure out which lat and long each frame belongs to, what im having trouble with is plotting the images in a for loop. I feel like im close, below is my code:
P = uigetdir(‘C:’);

S1 = dir(fullfile(P,’*.png’));

n_frame = numel(S1);

LatSize = size(Lat1, 1);
LongSize = size(Long1, 1);

FrameCount = LatSize/n_frame;

Lat = Lat1(1:FrameCount:end);
Long = Long1(1:FrameCount:end);

for i = 1:n_frame
F2 = fullfile(S1(i).name);
I{i} = imread(F2(i));
plot(Long, Lat)
axes(‘Position’, [Long(i,:) Lat(i,:) .5 .3])
imshow(I)
end
What am I missing here? I get this error when I run the code:
Unable to find file "F"
The various frames of the video are labeled Frame 0001.png, Frame 0002.png and so, there are 739 frames of the video and I want to plot each frame at the point they were recorded. My ultimate goal is to make it so you can click the plot and the picture will appear but ill deal with that part later. Any help is appreciated, thanks! I have an autonomous vehicle with a camera that follows a predetermined path. Ive already found a way to save each frame of the video and figure out which lat and long each frame belongs to, what im having trouble with is plotting the images in a for loop. I feel like im close, below is my code:
P = uigetdir(‘C:’);

S1 = dir(fullfile(P,’*.png’));

n_frame = numel(S1);

LatSize = size(Lat1, 1);
LongSize = size(Long1, 1);

FrameCount = LatSize/n_frame;

Lat = Lat1(1:FrameCount:end);
Long = Long1(1:FrameCount:end);

for i = 1:n_frame
F2 = fullfile(S1(i).name);
I{i} = imread(F2(i));
plot(Long, Lat)
axes(‘Position’, [Long(i,:) Lat(i,:) .5 .3])
imshow(I)
end
What am I missing here? I get this error when I run the code:
Unable to find file "F"
The various frames of the video are labeled Frame 0001.png, Frame 0002.png and so, there are 739 frames of the video and I want to plot each frame at the point they were recorded. My ultimate goal is to make it so you can click the plot and the picture will appear but ill deal with that part later. Any help is appreciated, thanks! imread MATLAB Answers — New Questions

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