THE DISCRETE FORM OF TRACKING-DIFFERENTIATOR
跟踪-微分器的离散形式

In this paper, the synthetic function for the time optimal control of the secondorder discretetime system is obtained by the Isochronic Region method. Based on this function,the discrete form of tracking- differentiator is constructed. Numerical simulation shows that thisdiscrete form of tracking- differentiator can quickly track an input signal witbout overshoot andchattering and can produce a good differential signal.