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Fangjun Jiang


Last seen: Today Active since 2011

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

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MATLAB
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English
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Answered
[Simulink] How to change the type of the number in "chart"?
Create a variable ConstantOne, specify its value as 1 and data type as fixdt(0,4,0). It's a good practice to not to use fixed nu...

3 hours ago | 0

Answered
Computational time of Matlab Function block in Simulink
Simulink Profiler

7 hours ago | 0

Answered
无法与所需的mathworks服务通信(错误5201)
https://www.mathworks.com/matlabcentral/answers/1815395-why-do-i-receive-error-5201-unable-to-access-services-required-to-run-ma...

4 days ago | 0

Answered
use embedded coder generation my model, it takes too long,At least 8 minutes, maybe more
You can observe the building process. Is it taking a long time for the Command Window to finish flashing all the warning message...

4 days ago | 1

Answered
How to validate that one datetime is greater than another
It seems fine in R2022b, R2023b and R2024a a=now; b=now; mustBeGreaterThan(b,a) mustBeGreaterThan(a,b)

10 days ago | 0

Answered
Struct variables are generated inconsistently with Embedded Coder
That can be explained by the "$N$R$M_T" on the left and "$N$M" on the right for "Global types". "$R" means root model name. "_T"...

12 days ago | 0

Answered
Why does Simulink "model" function documentation is no longer available after the 22a?
Doc link has been moved. https://www.mathworks.com/help/simulink/ug/simulink-model-command.html

13 days ago | 1

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Answered
Simulink considers that an output matrix has variable size when the size is always constant
You have "Ga=zeros(nr,ns)" so the size of Ga is fixed in your mind. But it is not the case for Simulink. Since nr and ns all com...

13 days ago | 1

Answered
Stateflow output string error
Press Ctrl+H at the model, on the left, navigate to the chart, on the right, click the output data, change its size.

14 days ago | 0

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Answered
How to debug a Simulink model that is called from Matlab
This would be difficult. If you do need to debug any issue with the Simulink model simulation, I would suggest you do it separat...

17 days ago | 1

Answered
scope displays incorrect waveforms
It is a discrete/digital simulation. There is always a time interval (however small) between two values. Turning on Marker at th...

18 days ago | 0

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Answered
How does the matrix product block work?
For the [1 2] Constant block, un-check "Interpret vector parameters as 1-D". For your Inport block, specify its Port dimensions...

20 days ago | 0

Answered
could anyone knows a counter in simulink that counts up and hold value up to max value and then reset to 0.
Not sure what is "hold job to hold value up to 100". But here is the link https://www.mathworks.com/help/simulink/slref/counter...

25 days ago | 0

Answered
How to add a mini-script to the toolbar
https://www.mathworks.com/help/releases/R2023b/matlab/matlab_env/create-matlab-favorites-to-rerun-commands.html

1 month ago | 1

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Answered
Variable Frequency Ruining Signal in Simulink
Interesting but I think I got the explaination. Everything is correct. You thought something was wrong probably because you mis-...

1 month ago | 0

Answered
Checking the value at a specific point in time with display in Simulink
u<=133, not u=<133. A better way is below. Make sure to set the solver so the simulation can hit the time point.

1 month ago | 1

Answered
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(...

1 month ago | 0

Answered
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...

1 month ago | 0

Answered
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 ...

1 month ago | 0

Answered
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...

1 month ago | 1

Answered
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...

1 month ago | 0

Answered
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...

1 month ago | 0

Answered
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...

1 month ago | 0

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

1 month ago | 0

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Answered
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...

1 month ago | 0

Answered
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')

1 month ago | 1

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Answered
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.

1 month ago | 0

Answered
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...

1 month ago | 0

Answered
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....

1 month ago | 0

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Answered
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...

1 month ago | 1

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