Simulink - Rate Transition

Hi,

I want to use Rate Transitions in my Simulink System. I am using a Fixed-Step + Discrete Solver with a discrete step-size. If I want to implement different tasks, for example, Task 1 with a sample time of 10 ms and Task 2 with a sample time of 1 ms. Does the fixed-step size in the Configuration Parameters has to be the smallest sample time, i.e. 1 ms or is it also possible to run the whole system with 10 ms and just a few calculations with the fast sample time of 1 ms?

Thank you

Answer 1

[Kaustubha Govind]

I think you should set your solver step size to 1ms. Simulink will determine that the blocks in Task1 have to be run only every 10ms and invoke them accordingly.

Answer 2

[Suneesh]

The step size in configuration parameters has to be the smallest (fundamental) step size. Other blocks can have sample times that are integer multiples of the fundamental. 'Rate Transition' block is used to connect parts of the model running at different rates