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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
What is the Matlab code that connects a variable to a Slider Switch Block?
The 'binding' needs to be a block in the model. If that block uses 'A' as a parameter and that parameter is selected to be bound...

2 dagar ago | 1

Answered
[Linux] Error in MatlabWindow after upgrading Ubuntu from 20.04 to 22.04
According to this, up to Ubuntu 18.04 LTS is supported by MATLAB R2018b. https://www.mathworks.com/content/dam/mathworks/mathwo...

3 dagar ago | 0

Answered
Force default datatype to single in undefined Simulink blocks
'DefaultUnderspecifiedDataType' is not the same as 'Default DataType'. Your setting only applies to the Constant block because i...

4 dagar ago | 0

| accepted

Answered
How do I get the relative error between 2 signals in Simulink?
Assume x and y are the two signals, you are doing abs((x-y)/x) or abs((x-y)/y), when x or y is close to zero, it will cause di...

4 dagar ago | 1

| accepted

Answered
Tally Instances of Negative Numbers in an Array (for loop)
A=load() returns A as a structure, not a typical matrix. If you make A an matrix, this code would work if you make the following...

6 dagar ago | 0

Answered
isnan to conver nan to zero in a table
T is an object of the class "table". You can't apply isnan() on it directly. Try the 'TreatAsMissing' option of the readtable() ...

6 dagar ago | 0

Answered
Is there a way to extract a list from "PV Array.ModuleName.Enum" to view the solar module data more efficiently?
Should be BlockDialogParameters.ModuleName.Enum or getfield(BlockDialogParameters.ModuleName,'Enum')

6 dagar ago | 0

Answered
Plot RGB triplets from a matrix as markers 'o'
Use 'color' to specify color in plot() x = linspace(0,10,10); y = linspace(0,10,10); xlabel('X-axis'); ylabel('Y-axis'); ax...

9 dagar ago | 0

Answered
What is the max number of digits allowed for a base 2 number?
The default data type in MATLAB is "double", which means 64 bits. When used to represent a base 2 number, its maximum value is 2...

12 dagar ago | 0

Answered
How to set Simulink block parameters using an absolute model path
The "absolute model path" of a block starts with the name of the model, not including the file folder where the model file is st...

17 dagar ago | 0

| accepted

Answered
How to output text to Command Window if signal changes from 0 to 1 in Simulink
You might want to do that, but MATLAB and Simulink are quite different. I don't think you can do that because disp() or fprint...

23 dagar ago | 0

Answered
I can't download Matlab R2022a release or earlier release
I can see many versions on this link. https://www.mathworks.com/downloads/

23 dagar ago | 0

Answered
How to change const variable during simulink runtime
While the simulation is running, if you double click the Constant block, change its value from one numeric value to another (e.g...

25 dagar ago | 0

Answered
Initial condition from external source for discrete integration diuring runtime
The value of "mec_init_pos" could be constant or dynamic, but in this case, only its value at the begining of the simulation (e....

30 dagar ago | 1

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Answered
Function Call Trigger Problem
This "Outport" block seems to output a function call trigger. The message tells you what type of block can receive this signal. ...

30 dagar ago | 0

Answered
A few basic Simulink/Simscape questions
run forever (tstop = inf) Yes. Set the simulation stop time to be inf store the trailing 10000 points Yes. Limit the data poi...

ungefär en månad ago | 0

| accepted

Answered
How the Delay one step block and stop time ( simulation time) infuence each other on simulink?
If you don't specify the step size or it is auto, the step size is automatically adjusted, influnced by simulation stop time and...

ungefär en månad ago | 0

Answered
Simulink model output heavily dependent on relative tolerance
Not typical but is for a stiff system. Choose a stiff solver. https://www.mathworks.com/help/matlab/math/solve-stiff-odes.html

ungefär en månad ago | 0

Answered
Issue in creation of test harness of a Simulink state in stateflow or creation of harness of a subsystem present in simulink state of stateflow.
I don't think a "system under test" can be a "state" in a state chart. A typical "system under test" has inputs, while a "state"...

ungefär en månad ago | 0

Answered
Hello, can MATLAB solve equations like the one below? I mean, can MATLAB find the conditions for z that satisfy this relationship, instead of just numerical solutions?
https://www.mathworks.com/products/symbolic.html

ungefär en månad ago | 0

| accepted

Answered
Generate signal according to the the rising edges of two pulse generators in simulink.
A triggered subsystem shoud suffice. https://www.mathworks.com/help/simulink/slref/triggeredsubsystem.html

ungefär en månad ago | 0

Answered
Matlab & Simulink crash at 2nd model run
After first run, execute "clear mex" or "clear functions" in MATLAB Command Window to see if it makes a difference.

2 månader ago | 0

Answered
Avoid reuse of local variables in Embedded coder
That is probably not the correct option. You should try to disable the "Reuse local block outputs" option. https://www.mathwor...

2 månader ago | 0

Answered
Switch multiport switch inputs based on time and order from user
There are many ways to do it. The easiest or most flexible way to do it is probably by using a MATLAB Function block. Use a Cloc...

2 månader ago | 0

Answered
Attempting to turn off Dynamic Memory allocation but struggling to set variable size upper bound
Try allocating the variable in one shot, e.g. obj=struct('x',num2cell(rand(1,1000)))

2 månader ago | 0

Answered
Can one Function call Trigger Multiple Subsystems?
Function-Call Split https://www.mathworks.com/help/simulink/slref/functioncallsplit.html

3 månader ago | 0

| accepted

Answered
运行s-function Output argument "sys" (and possibly others) not assigned a value in the execution with "ctrl>mdlOutputs" function.
Probably a typo at the last line of this code below. Should be 'sys', not 'sym'. Also need to add a line 'end' to finish this fu...

4 månader ago | 1

Answered
my for loop stop after the first valid number has been found how do i fix this
Use "result_1", no need to create "answer_1" numbers=1:100; result_1=[]; for i =1:numel(numbers); num=numbers(i); i...

6 månader ago | 0

| accepted

Answered
hi i started the matlab onramp course and im stuck on this further practice question i wld appreciate if anyone cld help me or even give an hint
density=10:10:100 index=[1 3 6] SelectedDensityValue=density(index)

6 månader ago | 0

Answered
Questions regarding Unit Delay block initial condition and model recompilation
Use Simulink.Parameter Specify its storage class as "ImportFromFile" and specify a HeaderFile name. When the code is generated...

6 månader ago | 0

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