Experimental Implementation of an Adaptive Fuzzy Sliding Mode Control Design for IM Speed Control

The adaptive fuzzy SMC technique presented in this article based on the boundary layer approach for speed control of an indirect field-oriented control (IFOC) of an induction motor (IM) drive. The characteristic of bounder layer is to offer a compromise between control robustness and chattering elimination. In addition, this technique offers many advantages for uncertain dynamic systems, the classic SMC is known by the major problem of chattering generated by the switching function used to attract the state trajectory towards the sliding surface. Several methods and techniques have been tried to eliminate this phenomenon. We propose here an approach that involves the fuzzy logic to avoid this undesirable effect so that the stability condition according to Lyapunov is satisfied. This adaptation fuzzy controller associated with the SMC towards the obtained results forms a robust tool for chattering elimination. Finally, the effectiveness of the complete proposed control scheme is verified through an experimental setup. The experimental results of the proposed scheme have presented good performances compared to the classical sliding mode control.