How to start with optimization in MATLAB Simulink?

Are there any MATLAB Simulink optimization examples I could look at to get a general understanding of the method and the process?

For example, the extremely simplified version of the problem I am trying to solve, and maybe use & learn optimization while doing it, is: for a voltage signal, find the optimal offset value so that after the PWM Generator block, the PWM and are equal for the each switching period.

So, I know that for the PWM signal and , duration to be the same, the PWM Generator input signal should be half of the counter value, i.e., offset = - signal.

But how would I get to this conclusion using the optimization method and PWM signals?

A more complex version of the problem is where I have several input signals and now the sum of the PWM signals should be minimum. And I need to calculate the optimum common offset value for all the signals.