How to set step time for using Repeating sequence to create high frequency triangular waveform

I am simulating Buck converter fed DC motor .To create pulses(20 KHZ) I am using repeating sequence.When simulted under normal auto step mode,triangular waveform is not created.When I reduce the step size (10e-11),I can simulate.But the simulation takes longer time. How to solve this? Please help me all. Regards srinivasan

[Paulo Silva]

I added the tag simulink and the product Simulink to your question.

Answer 1

[Fangjun Jiang]

The frequency of your pulse signal is 20KHZ which means the period is 50us. If the "pulse signal" is actually a triangular waveform, I would say your step size should not be larger than 5us, that is 5e-6. Your current step size 10e-11 is too small. I would recommend using 1us or 2us. Or you can set up the maximum step size to be 5us.

[venkat reddy]

thank you sir for your answer it worked for me thanks again.....