Total sliding-mode speed control of field-oriented induction motor servo drive

This study addresses the design of a speed control scheme based on total sliding-mode control (TSMC) theory for a field-orientated induction motor (IM). The TSMC comprises an equivalent control design and a robust control design. This control strategy is derived in the sense of Lyapunov stability theorem such that the stable tracking performance can be ensured under the occurrence of system uncertainties. The salient feature of this control scheme is that the controlled system has a total sliding motion without a reaching phase as in conventional sliding-mode control (CSMC). In addition, numerical simulations as well as experimental results are provided to validate the effectiveness of the developed methodology in comparison with a CSMC system.