Abstract
Present authors propose a new design method of optimal deadbeat controller with two-degree-of-freedom. The dynamic characteristic of the system is expressed by the step or impulse response. From the matrix computation by using sampled data of the system's response, can be easily obtained the optimal deadbeat control signal not only for the desired value but also for the disturbance, which minimize the quadratic performance index. Then, the deadbeat controller with two-degree-of-freedom can be designed by using the control signal. This design method can improve both the step-wise desired value tracking characteristics and the step-wise disturbance rejection characteristics respectively and independently from each other. To demonstrate the effectiveness of the proposed method, some numerical examples are also presented. It is shown that, by using this method, better results than those obtained from the preceding one can be obtained.
