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# Raymond Wong

Last seen: 6 months ago Active since 2020

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Question

How does function idgrey() work?
I'm recently working on grey box model identification, and with matlab functions I got some pleasing results. I wonder how grey ...

8 months ago | 1 answer | 0

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Question

Simulink scope figure copy to clipboard not fully displayed
I tried copying the figure displayed in simulink scope to cilpboard. Below is the original version: After I copy it to clipbo...

1 year ago | 1 answer | 0

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Difference between matlab ss function and Simulink State-Space block
I found the issue. It turned out the model I built in MATLAB at first is the Discrete-time state-space model, which I didn't pay...

1 year ago | 1

| accepted

Question

Difference between matlab ss function and Simulink State-Space block
I want to do induction motor state space model simulation, so I built it with ss function and set the zero initial conditions, b...

1 year ago | 3 answers | 0

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Question

Measure the stator phase voltage of induction motor
I want to measure the stator phase voltage of induction motor——i.e.,the voltage between phase terminal and common point of stato...

1 year ago | 1 answer | 0

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Issues of extracting instantaneous symmetrical components
I think I found the issue. The input to th symmetrical-components transform should be complex value, but what I input is the ti...

1 year ago | 0

| accepted

Question

Issues of extracting instantaneous symmetrical components
I want to extract 3 phase instantaneous symmetrical components, specifically, positive sequence time domain value of 3 phase. I'...

1 year ago | 1 answer | 0

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Question

Map vector to vector with neural network or other black box model
I want to find a mapping function which can map two vectors: The size of x is 3 and y is 4. There're nonlinear realationshi...

1 year ago | 1 answer | 0

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Question

Simulink model generate different results with tha same parameters
I built a Simulink induction motor with ITSC fault model and tried to simulate it. I configured the necessary parameters in Mode...

1 year ago | 0 answers | 0

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Question

lsim and transfer fcn block in simulink output different results
I simulate the same transfer function with lsim and transfer fcn block in simulink but I ended up with different results. In Si...

2 years ago | 1 answer | 0

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Question

Progress-viewer window of system identification meaning
Hi, I'm using system identification toolbox, but I'm a bit confused with the progress-viewer window. I mark them with the red re...

2 years ago | 0 answers | 0