MATLAB: Unable to properly feedback an updated signal in simulink

Question

Hello,

I'm trying to make a toy example work using simulink. I have a particle that i want to go in a circle. Basically what I want to do is to rotate progressively by 10 deg over 36 sec (so it makes a full circle).

How to code this in simulink? For the rotation, I used the 2d rotation matrix about z. I am basically having trouble feeding back the updated velocity as the new reference.

Answer 1

If you directly feed it back, you will create an algebraic loop, which is sometimes difficult to solve. Feedback through a delay block https://in.mathworks.com/help/simulink/slref/delay.html. Give a delay of 1 between output and feedback input.