Robust control for induction servo motor drive

The design and properties of a robust control system for an induction servo motor drive to track periodic commands are addressed. The presentation of robust control for the indirect fieldoriented induction servo motor drive system is divided into three parts: state feedback controller, feedforward controller and disturbance controller. The adaptation laws of control gains in the robust control system are derived in terms of the Lyapunov stability theorem. In the whole design process, prior knowledge of the controlled plant is not necessary and the asymptotic stability of the control system can be guaranteed. It has learning ability similar to intelligent control, but with a simpler control framework. With the proposed robust control system, the drive possesses the advantages of good trackmg control performance and robustness to uncertainties. The effectiveness of the proposed control scheme is verified by both the simulated and experimental results.