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RMS of continous signal

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Mohammad Wasi Ahmadi
Mohammad Wasi Ahmadi on 5 Jul 2017
How can I calculate moving 3 sec RMS value of a continuous signal in Simulink?

Answers (1)

Akhilesh Mishra
Akhilesh Mishra on 11 Jul 2017
The moving RMS can be taken using the Moving RMS block. The Solver setting for the model has to be set as 'Fixed-step' with Fixed-step size set.
Please refer to the snapshot attached below for an example. The sample time is 0.01, and a Moving RMS block is used to calculate the RMS of the sine wave for 3s.
The documentation link for this block can be found in the following link- https://www.mathworks.com/help/dsp/ref/movingrms.html
  2 Comments
Mohammad Wasi Ahmadi
Mohammad Wasi Ahmadi on 11 Jul 2017
Edited: Mohammad Wasi Ahmadi on 11 Jul 2017
I used the Moving RMS block but I get an error. saying that I need a signal specification block before the block
Mohammad Wasi Ahmadi
Mohammad Wasi Ahmadi on 11 Jul 2017
the input signal is like this

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