Fangjun Jiang

Last seen: Today | Con actividad desde 2011

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

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Simulink State Space Error
Your A, B, C, D values specify that the size of the input is 2x1 (two inputs) but the Step block provides only one input.

alrededor de 11 horas hace | 0

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Run a script on all files in a folder/subfolders
I think the approach here can be used. https://www.mathworks.com/matlabcentral/answers/1934245-want-to-iterate-over-subfolders-...

1 día hace | 0

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Load data from *.mat file with mask
For string parameters like folder and file name, you might not be able to pass it from the mask to the inside block parameter. I...

1 día hace | 0

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Convert osm data to xodr
Mathworks' RoadRunner can do it but if you don't have a license, try the open-source SUMO with its netconvert. https://sumo.dlr...

4 días hace | 0

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Parameters of FunctionCall block in Simulink
Click "Help" to bring up the document. It is there. get_param(gcb,'FunctionPrototype') 'InputArgumentSpecifications' 'OutputA...

4 días hace | 0

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Want to iterate over subfolders within folder
Files=dir('**/*.xlsx') will give you a list of all the .xlsx files in the folder and sub-folder. Observe Files(1), Files(2), .....

5 días hace | 0

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Is it possible to control where the ADC samples within a period? MATLAB Simulink C2000 F28379D
Not too many people noticed this. In the case of a discrete sample time, the vector is [Ts, To] where Ts is the sampling perio...

5 días hace | 0

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Why can't the index variable of a for loop be stored in a structure or other array?
There is no mention of any requirement on the name of the index varialbe, here in the document for "for", https://www.mathwork...

5 días hace | 0

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How to obtain a vector (A) of 11 rows (output MATLAB Function block), from a vector (B) of 501 rows (input to the MATLAB Function block)?.
The straight solution is to use below. function y=f(A,B) temp=sqrt((A).^2+(B).^2); y=temp(1:49:450); Simulink is strict on k...

6 días hace | 0

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Using Try/For loop to allocate correct serial port number
See help document for "break" and "continue" for k=1:100 port=sprintf('COM%d',k); try ND280 = serialport(por...

6 días hace | 0

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How to fetch the documentation content of a Doc block?
See this Answer. https://www.mathworks.com/matlabcentral/answers/521695-my-docblock-data-doesn-t-update-programmatically

6 días hace | 0

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update a parameter in function block each timestep in simulink
Use the "Ramp" block to generate such a signal.

12 días hace | 0

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Simulink, simout problem
The error is from the Simulink model itself. It can't determine the size of certain signals, most likely from the MATLAB Functio...

13 días hace | 0

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Error evaluating 'InitFcn' callback of block_diagram 'SIMULINK_MODEL'. Callback string is 'MATLAB_MODEL' Caused by: Error using MATLAB_MODEL
Most likely, it is looking for a file named "MATLAB_MODEL_v20180919.m". Search for that file and check if the folder is in your ...

15 días hace | 0

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Simulink: changing gain based on input
For this, it sounds like you just need a Gain block. Set the gain value to be 255/pi, when the input is 0, the output is 0. When...

15 días hace | 0

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I want to correct this command please
The three equations form a non-linear ODE with three independent variables (x,y,z). Because they are coupled, you can't solve th...

18 días hace | 1

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Why can I break Simulink library links by right-clicking in the model, but can't programmatically?
"Implicit" means Block resides in library block and is itself not a link to a library block. Suppose that A is a link to a subsy...

18 días hace | 0

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Extracting values from a string - Matlab
You got string array (" ") and char array( ' ') mixed. See which data format fits you better. ind = "i 1 1" ind(1) ind2=char(...

18 días hace | 0

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How to log signal data from simulink to matlab with higher time interval to avoid high data storage?
Set the "Decimate data" to be 300. It means log every 300th data. It may not guarantee 0.3 second if using variable step size so...

19 días hace | 1

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Find maximum value in a column of each cell in a large set of cell array?
c={rand(10),rand(11),rand(12)}; N=5; cellfun(@(M) max(M(:,N)),c)

20 días hace | 0

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I would like to convert data of double type to single type before code generation in 2020A Simulink, without using Cast blocks on most functions.
See this example Validate a Single-Precision Model

21 días hace | 0

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Unable to use the variable from workspace which is sent to the MATLAB workspace using 'To workspace' block of the Simulink.
"Unable to read file 'IEEE_14_Bus_System_SM_FFR.mat'. No such file or directory." Make sure you have that .mat file. Use Comman...

22 días hace | 0

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Returning output signals from a Simulink block to Matlab
Access Data in a MATLAB Function During Simulation

22 días hace | 0

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Does anyone know how I can connect a matlab function block with memory block and a controlled current source?
See this How to Use Globals with the MATLAB Function Block

22 días hace | 0

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Modify In/Output Port names with a MATLAB script
Something like this: [~,~,InPortNames]=xlsread('ExcelFileName'); % read Excel file to get PortNames as a cell array InPorts=fi...

25 días hace | 0

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Dynamic Modeling of Wheel-track Composite Vehicle
Vehicle Dynamics Blockset has dual track model as well as wheel/tire dynamics. Not sure if this meets your need or whether you h...

26 días hace | 0

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Is it possible to convert a referenced Configset to a regular Configset that is not referenced from an sldd?
copy, attach and setActive. similar to the example here? https://www.mathworks.com/help/simulink/slref/simulink.configsetref.ht...

27 días hace | 0

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I noticed that some GoTo and From signals (input port no. 1) are not connected properly after the transfer (from one system to another system) of the model.
The number on top of the line indicates the size of the signal. "1" means a scalar. "2" means 1x2 or 2x1 vector. "?" means it ca...

27 días hace | 0

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How to achieve fan rpm with increasing step size?
The "step" increase you saw is probably determined by your lookup data and simulation step size. What you really need is proba...

28 días hace | 0

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Does anyone know which Simulink Block this is?
It looks like the "Fcn" block specified as "u(1)". It is used to pick out the first element. https://www.mathworks.com/help/re...

29 días hace | 1

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