How to create a subsystem running at an integer number of sampling rate of its parent's subsystem, which is a function call triggered?

Hi,

In Simulink, I have a function-call subsystem running at 10ms. Inside this I want to have a subsystem running at 4 seconds. Can you please advise?

Thanks,

Answer 1

[Fangjun Jiang]

If the parent system is "triggered" at 10ms rate, the child system is never going to be able to run at 4s rate. Without special processing (saving states maybe), every time the parent system is triggered, states are reset.

Make it a system running at a regular 10ms sample rate, specify the child system running at regular 4s sample rate.

[John]

Can you please elaborate more? What is your suggestion on the solution?

[Fangjun Jiang]

Right click the subsystem block, select Block Parameters (subsystem)

check "treat as atomic unit"

Specify the sample time (0.01s for parent subsystem and 4s for child subsystem)