Fangjun Jiang
What is a model? Professional Interests: Model-Based Development
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Contribute at least one answer each month for 36 consecutive months
Awarded to Fangjun Jiang on 04 Mar 2020
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Content Feed
Is there any initialization block for parameters and constants in simulink model to be used throughout the model ?
Use a Simulink Data Dictionary (.sldd). Start from here https://www.mathworks.com/help/simulink/ug/migrate-models-to-use-dictio...
2 días hace | 0
Simulink If block error "Port 1 must directly or indirectly connect to one If Action Subsystem"
Outport 1 of the If block is also connected to another destination but it was not shown in the snapshot. Dis-connect that branch...
3 días hace | 0
Convert array of numbers to an array of padded strings
stanums = 7:12; s=sprintf('%02d\n',stanums(:))
4 días hace | 0
Hello, can someone please help me understand this error?
If the pulse width is 87.85%, then the gap of the pulses will be 12.15%. Then you have to be able to distinguish at least 0.05% ...
6 días hace | 0
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How to do Simulink versioning
Mathworks has its own diff tool and it can be integrated with Git. Model Comparison
6 días hace | 1
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Creating new variable using different row and column chunks from a matrix
D=rand(29,46); Training1_T= [D(1:14,17:21);D(15:29,32:36)]
6 días hace | 0
Hello, I need help to resolve this error, please.
Simulink now supports "string" data type. At your Simulink model, press Ctrl+H to bring up the Model Explorer. Navigate to the c...
8 días hace | 0
Unable to convert the 2021 mdl to 2009b mdl
You can do this, but of course, if there are blocks that are available in R2021b but not in R2009b, then there could be issues. ...
9 días hace | 0
extract a number N of equally spaced rows within a matrix
M=repmat((1:100)',1,2); N=7; d=M(round(linspace(1,height(M),N)),:)
9 días hace | 0
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Hello, could someone kindly assist me in resolving this error?
A Simulink model describes a "data flow". It is different than a "code flow", where "voltage_input" is just a variable stored in...
9 días hace | 0
| aceptada
Algebraic loop error, how to solve?
There is no algebraic loop here. Giving what ever value to DELTA_U(k), "f" can be calculated without problem. If you feed the o...
13 días hace | 0
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Ramp rate %/min limiter in simulink
Feed constant value of 0.05 to "up" and -0.05 to "lo". If you want to prevent a value from increasing more than 5% per minute, t...
13 días hace | 0
I want to access signal data in Subsystem from mask callback without using the base Workspace
Refer to this Q&A. https://www.mathworks.com/matlabcentral/answers/2003487-how-to-plot-simulation-results-in-a-gui-while-the-si...
13 días hace | 0
Matrix Data Results Explanation
The code looks good and shows good programming flow to use logical index. It will be very lengthy to explain why the result show...
16 días hace | 1
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Way to disable Simulink blocks at compile time using a variable in the workspace
This is the exact use case for Variant Subsystems. https://www.mathworks.com/support/search.html/videos/using-variant-subsystem...
16 días hace | 0
How to use save in matlab function block ?
The MATLAB Function block will be executed at every simulation step, so if save() works, it will create many .mat files, each is...
16 días hace | 0
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How to convert a negative decimal to binary using the two's complement coding method
dec2bin(-1)
17 días hace | 1
How to make Simulink read a MatLab variable every 5 seconds?
Use the "MATLAB Function" block to integrate your MATLAB algorithem directly into a Simulink model.
17 días hace | 0
Multiple output in Switch block
Using your example, just specify the top input as constant [1, 2,3], the bottom input as constant [4,5,6]. The output will be a ...
20 días hace | 0
graphical visualization of input parameters collected in a struct/array
Use the built-in variable editor is sufficient to visualize struct array. Just run this at the Command Window open params
23 días hace | 0
How to get values of Scope and Port of "Data data" dialog box using API's?
open_system('sldemo_autotrans'); sf=sfroot; ch=sf.find('-isa','Stateflow.Chart'); d=Stateflow.Data(ch); d.Scope='Output'; d...
26 días hace | 0
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Is there a specific standard for the rows and columns of a struct?
It is described in the Help document of struct(). The size of the resulted struct array is the same as the size of the cell arr...
alrededor de 1 mes hace | 0
How can I view under mask of the block "Orbit Propagator"
It does not seem to be a masked block. Double click the 'Attitude Profile (Nadir Pointing)' block, it opens the parameter dialo...
alrededor de 1 mes hace | 0
| aceptada
How to plot simulation results in a GUI while the simulation is running?
https://www.mathworks.com/help/simulink/ug/accessing-block-data-during-simulation.html https://www.mathworks.com/help/simulink/...
alrededor de 1 mes hace | 1
| aceptada
Turn Off a Lamp Block after 10s
https://www.mathworks.com/help/stateflow/ref/after.html
alrededor de 1 mes hace | 0
I am working with Galois field. I obtained all the 256 values, and now i want to make the matrix form of the obtained values.
results = zeros(1,256); for x_gf = 0:255 e = conv(a, x_gf); f = conv(c, x_gf); h = e + b; j = f + d; ...
alrededor de 1 mes hace | 0
how to give initial condition to simulink function variables
A Simulink Function is like a Simulink model. Depending on the blocks that are used inside the Simulink Function, some blocks ha...
alrededor de 1 mes hace | 0
How to programmitcally edit the "Goto Tag" in "From" block in simulink
get_param(PathToTheBlock,'GotoTag'); set_param(PathToTheBlock,'GotoTag','B')
alrededor de 1 mes hace | 1
| aceptada
header files from simulink data dictionary
Use Simulink Data Dictionary API, open the SLDD, get the bus object, get the "headfile" property https://www.mathworks.com/help...
alrededor de 1 mes hace | 0
Open system mask parameters
If the block has been masked, the command to open the masked parameters is open_system(block)
alrededor de 1 mes hace | 0
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