VSS TYPE SELF-TUNING CONTROL

This paper is concerned with the discrete type variable structure control and its application to self-tuning control. The proposed variable structure control does not use state variables but uses present and past output or input-output signals. Thus the control system is designed based on the input-output relation. In the first, the variable structure control for the deterministic discrete-time system is proposed based on the minimum variance and generalized minimum variance control. In the next, the proposed method is extended so that self-tuning control is realized for the plant with uncertain parameters by identifying the control law on-line. The simulation study shows the effectiveness of the proposed algorithm.