Simulink: Switching for a duration less than the discrete sample time

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David Reilly 2011-3-1

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https://ww2.mathworks.cn/matlabcentral/answers/2247-simulink-switching-for-a-duration-less-than-the-discrete-sample-time

Hi, I'm relatively new to Simulink. Is there a way to close a switch(es) for a duration less than the sample time of my simulink model? My model has a fixed sample time of 5ms and I'd like to close a switch for part of that time (eg 2ms). Any information would be greatly appreciated. Is there a block that can assist with this requirement?

Put another way: is there a way to pass a vector (representing on/off time) to a block which then makes an output signal high for the stipulated time T (when T is less than the sample time Ts).

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Kaustubha Govind 2011-3-1

Since your model sample-time is 5ms, the output of this switch block is only sampled every 5ms. Therefore, any change that occurs in between those times is not taken note of. Is there a reason that you want to achieve this? Also, why not use a variable-step solver or a smaller time-step?

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