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Slow simulation with noisy output

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Alexandre
Alexandre 2014-9-3
关闭： MATLAB Answer Bot 2021-8-20
Hi,
i have this issue with slow simulation time for a stable first order tranfers function.
I've tested it with and without the Dead zone and I get the same results. The Scope1 show a intense oscillation of the output.
Thanks
Alexandre
  1 个评论
Aniruddha Katre
Aniruddha Katre 2014-9-3
This behavior stems from the fact that the time-step taken by the solver is so large that it fails to capture the dynamics of the system, which has a bandwidth of 200000 rad/s.
Consistent with the Nyquist sampling theorem, if you run the simulation using a fixed-step solver with step size of around 1/400000, then you will not observe this kind of oscillation.

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