Sliding mode control simulink

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KAI DONG
KAI DONG on 29 Nov 2022
Commented: KAI DONG on 29 Nov 2022
Hello!
Herewith my simulation and example from Book 'sliding mode control and observation'(Yuri Shtessel)
I try to get similar pic, but i do not know where is my problem.
I set fixed-step as 0.0001 for reaching phase. scope shows zero always.
thank you for your any suggestions.

Accepted Answer

Paul
Paul on 29 Nov 2022
Hi KAI,
Do any of the integrators have a non-zero initial condition?
Also, might want to consider using a variable step solver, which will do a better job of catching the sign changes in the input to the Sign block.
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KAI DONG
KAI DONG on 29 Nov 2022
Thank you. I found my problem. many thanks

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