How can I determine the frequency of a signal in Simulink?

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I would like to use a built-in Simulink block to determine the frequency of a signal.

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MathWorks Support Team
A built-in block that determines the frequency of a signal is not available in the Simulink product.
To work around this issue, you can write a C-MEX S-function that implements a fast Fourier transform (FFT) algorithm. For more information, see "Writing S-Functions" in the Simulink documentation.
Otherwise, use one of the following built-in options provided by the Signal Processing or DSP toolbox products:
  • Use the Spectrum Scope block to compute the frequency of a signal.
  • Use the FFT and Buffer blocks to create a signal frame and analyze its frequency.

更多回答(1 个)

AbhimanyuSingh
AbhimanyuSingh 2017-8-9
There is no such block which can directly calculate the frequency of block, but we can design a subsystem which can give you the frequency of signal. Please find the snapshot for the same:
  2 个评论
Jan
Jan 2018-7-19
@Jean Ubertalli: Please do not use flags for posting comments.
Jan
Jan 2019-7-8
@SUMANT ANAND: It is hard so solve "similar" problems. Please open a new thread and explain your specific problem.

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