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Fangjun Jiang


Last seen: Today Actif depuis 2011

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What is a model? Professional Interests: Model-Based Development

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A répondu
Why is it that Line objects can be instances of two different classes? How can I use findobj to detect only chart primitives?
load handleArrays.mat get(hD,'Color') get(hD,'Type') get(hL,'Type') class(hD) class(hD(1)) class(hL) class(hL(1)) class(...

2 jours il y a | 0

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I cannot evaluate "pauseFcn" callback by using "sim" command
A few things. Try SimOut=sim(). It used to be, that if there is no return variable specified, then the simulation won't log the...

4 jours il y a | 0

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Test Simulink model with functions running at different sample time.
You need to make your test sequence, function-call trigger, or source signal update rate, etc. be the fast rate (2ms). The slow ...

5 jours il y a | 0

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Create an array of distinct objects of handle class
As long as uilable() can only create a single object, there is no way to avoid the loop. In arrDir(1:2) = uilabel, the same sin...

5 jours il y a | 1

A répondu
plot the function which is dependent on x, y and z with x, y and z on three axis.
You are asking for the impossible, the visualization of the 4th dimension. I thought it was impossible in three dimentional wo...

6 jours il y a | 0

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Simulink source commands finding
Use the Signal Editor block https://www.mathworks.com/help/simulink/slref/signaleditorblock.html or in older version, it is ca...

7 jours il y a | 0

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Simulink: Mask parameter fails to bind to block port
It is more involved for this task. I hope the attached model (in R2022b) make it easier. In your model, the two inports are cal...

8 jours il y a | 0

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Stop Simulink Model Update via Callback
Instead of sldiagviewer.reportError(errMsg), if you do error(errMsg), it should stop.

9 jours il y a | 0

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Reset value of Ramp block to be used in Matlab Fctn block
I think it is possible. Use the "State Writer" block. But using the "Integrator" block would be easier. Enable its external res...

9 jours il y a | 0

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How to write overline on top of a word in title of a plot?
title(["Some text $\bar{XX}/V$","Some other text"], 'Interpreter', 'LaTeX')

9 jours il y a | 1

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Hi, i want to plot two columns of values of data from excel, the graph includes a zero while the excel sheet doesn't. Here is my code and the graph I got vs what I should get
I think the last data point (un-wanted) is at (0,0). Your data shows it. You can look at the value of q and D_q.

9 jours il y a | 0

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IF statement if == "A variable" not working
Most likely it is a floating point data equal comparison problem. b is somewhere near 9999 but not exactly. Use round() or integ...

9 jours il y a | 0

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array operations in app designer
Need to specify the .Value property? If not, just pause the code and check its value, app.uhly_array and app.theta1 app.delta1....

9 jours il y a | 0

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Simulink Discrete Filter Sample Time
See the note on this page. To set it in command line set_param('BlockPath','SampleTime','0.1') https://www.mathworks.com/help...

10 jours il y a | 1

A répondu
"Unrecognized method, property, or field 'Type' for class 'matlab.ui.control.WebComponent'."
I think app.tabFiles.Children is an array of handles. Try tf = strcmp(get(app.tabFiles.Children,'Type'), 'uistatebutton')

10 jours il y a | 0

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The code is correct, however I keep getting this error: Invalid color, marker, or line style.
See the possible marker symbol and line symbol help plot Various line types, plot symbols and colors may be obtained with P...

12 jours il y a | 0

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'Could not determine the size of this expression' in simulink function block
In general, it is better to specify the size (number of rows and columns) of all the inputs, outputs and parameters that are use...

12 jours il y a | 0

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variable duty ratio to a switch at different time intervals
I assume this is in Simulink. You can use an AND logic block or Product block to multiply two signals. One is the regular 40% du...

12 jours il y a | 0

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How to use Workspace Variable value instead Sldd value in Simulink model.
Check the "Enable model access to base workspace" at Model Property, External Data tab? https://www.mathworks.com/help/simulink...

12 jours il y a | 0

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Is there a nice way to discretely simulate an LTI system using a function block in Simulink?
Yes. For sys = ss(A,B,C,D,ts), the following equation should be used to advance the simulation step by step. Make sure to use c2...

13 jours il y a | 0

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How can I solve this error??
There is nothing wrong in these commands. The simulation was being started but there is problem in your scenaio. Switch to the...

14 jours il y a | 0

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Building an array of strings that might be empty
That is because app.XminEditField.Value and etc are char array, not string use string() s=["a","","b","c"] c=['a','','b','ded...

14 jours il y a | 0

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How computationally intensive are switch case action blocks in Simulink?
Yes. More cases will not increase the computation load. Only the activated cases will be executed. It is called the Condtionally...

15 jours il y a | 0

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How to get variable from Simulink model workspace for use with Multiple Simulations?
I think you are looking for model parameter argument. Follow this Q&A. https://www.mathworks.com/matlabcentral/answers/2101666-...

15 jours il y a | 0

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How to fix this error? : Error:Index exceeds the number of array elements. Index must not exceed 4.
All the Winding parameters need to have 5 elements (including both the left and right side). You have only 4.

15 jours il y a | 0

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Is it possible to use a parameter within the "To Workspace" block?
I remember answering the same question before. The answer is "No" by value passing, but you could do it using set_param(). For ...

15 jours il y a | 0

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Any good resources on how to use "Matrix Interpolation" block in simulink?
What you need is the "2-D Lookup Table" block. Drag that from the library and select "Nearest" at the "Algorithm" tab. The Help ...

15 jours il y a | 0

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In GUI, RangeSlider 's Value may have a wrong type
No confusion. You will find X = app. FilterHzSlider.Value; X is returned as [50 1000]. So you would do minFrq=X(1); maxFrq...

16 jours il y a | 1

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Function call failed when calling matlab function inside function block
Okay, fg_chua() is generated by matlabFunction(). You need to specify the size of ux in the MATLAB Function block. Open the MAT...

16 jours il y a | 0

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How to change the parameter value at run time in Matlab Simulink
This is not "change the parameter value at run time". Rather, it is to mimic a dynamic signal. You can use many of the blocks in...

16 jours il y a | 0

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