Digital redesign of state-delayed systems counting the computer-control delay via law of mean

This paper presents a new approach for digital redesign of the continuous-t ime state-delayed system with the state-feedback controller. The bilinear a pproximation method together with the linear interpolation is utilized to a pproximate some integration functions, and the concept of the Law of Mean f rom the integral calculus is applied to establish an equivalent state-feedb ack digital controller from the available state-feedback analog controller. In addition, for practical implementation of the developed digital control ler by a microcomputer, the computation time delay of the digitally redesig ned control law is considered and equivalently modeled at the input, and th en a digital predictor controller is proposed for the sampled-data state-de layed system with the control delay.