시간 지연 시스템에 대한 제어기의 성능 개선

Improved performance of controllers for systems with a time delay

The performace of the controllers is investigated for time-delay systems which has an integrator. It is well known that high performance can be obtained for the systems response and load disturbance rejection by adjusting the only three prarameters of the modified Smith predictor. But in the case of the time—delay systems with repeated poles, good performance cannot be obtained with the modified Smith predictor. But improved performance can be obtained through the intentional mismatch of delay parameter. The calculating formula for the approximation delay parameter values is proposed. Simulation results show the improved response characteristics with the proposed delay parameter values.