Fangjun Jiang

Last seen: Today | Con actividad desde 2011

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

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Delay - bus as initial condition and bus propagation
I am intested in this question so I made an example. According to the document, 'The initial condition x0 port accepts nonvirtu...

alrededor de 17 horas hace | 0

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Simulation manager with initFcn
'InitFcn' is executed before the simulation starts, that is probably the reason that your parameter values set in the multiple s...

alrededor de 18 horas hace | 0

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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...

6 días hace | 1

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[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...

7 días hace | 0

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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...

8 días hace | 0

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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...

8 días hace | 1

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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...

10 días hace | 0

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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() ...

10 días hace | 0

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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')

10 días hace | 0

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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...

13 días hace | 0

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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...

16 días hace | 0

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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...

21 días hace | 0

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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...

27 días hace | 0

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

27 días hace | 0

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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...

29 días hace | 0

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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....

alrededor de 1 mes hace | 1

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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. ...

alrededor de 1 mes hace | 0

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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...

alrededor de 1 mes hace | 0

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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...

alrededor de 1 mes hace | 0

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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

alrededor de 1 mes hace | 0

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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"...

alrededor de 1 mes hace | 0

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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

alrededor de 1 mes hace | 0

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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

alrededor de 1 mes hace | 0

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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 meses hace | 0

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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 meses hace | 0

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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 meses hace | 0

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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)))

3 meses hace | 0

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

3 meses hace | 0

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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 meses hace | 1

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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 meses hace | 0

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