115 Design of Discrete-time Robust Control Systems with Input Constrains in Magnitude and Rate of Change based on the Principle of Matching

Abstract

This paper gives a design method of discrete-time robust control systems that are subjected to reference inputs restricted in magnitude and rate of change. Based on the principle of matching, we derive a practical necessary and sufficient condition that ensures time-domain specifications in discrete-time. Additionally, we derive a practical robust matching condition based on the practical necessary and sufficient condition under the plant uncertainties in discrete-time. A simple design example of a speed control system of a DC servo motor is also given.