In Simulink, how can I execute a subsystem once every 5 seconds?

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Kevin Bachovchin 2017-7-24

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https://ww2.mathworks.cn/matlabcentral/answers/350029-in-simulink-how-can-i-execute-a-subsystem-once-every-5-seconds

评论： Dimitris Iliou 2017-7-27

In Simulink, how can I execute a subsystem once every 5 seconds? While the rest of the simulation will need smaller time steps, I would like one subsystem to only execute once every 5 seconds and then hold that output value of the subsystem for the remainder of the 5 second period.

I tried to do this using triggered subsystems. However, I got an error because my subsystem has continuous blocks (Fourier blocks). Basically, I just want my Simulink model to do a Fourier analysis of voltages/currents in my model once every 5 seconds and not continually recompute this with every small time step that is needed for simulation of the electrical system.