In conventional SMC, after crossing the reaching phase the states trajectories reach to sliding surface and s(t)=0 insured. But in ISM , s(0)=0 i.e sliding mode exists right from begining. ISM is more robust method, because reaching phase is eliminated.

i SMC means intelligent SMC, I'd like to know that, what is the different between ISMC and Fuzzy SMC?

Thanks

Prof Vazquez,

Certainly, SMC  main feature , robustness,  is reflected in sliding phase. That's why I suggest for Integral Sliding Mode (reaching phase eliminated)

Dear Tiwari,

Is it possible to explain why do you suggestion integral SMC????