本文论述了一个有限时间整定的自校正控制器。它使参数未知的单输入单输出离散时间系统的输出在有限时间内准确地跟踪给定输入,只要系统中除了给定输入以外,没有其它的外部干扰。由于系统的零点不被消除,故系统可以是非最小相位的。这个自校正控制器是这样设计的:用多项式方程的方法设计参数已知时的有限时间整定控制器,用有限时间整定适应观测器估计参数。最后用一简单的例子进行了计算机仿真,仿真结果证实了设计方法的正确性。 This article discusses a finite-time tuning self-tuning controller. It enables the output of a discrete-time single-input, single-output system with unknown parameters to accurately track a given input for a limited time, as long as there is no external disturbance other than the given input in the system. Since the system zero is not eliminated, the system can be non-minimum phase. The self-tuning controller is designed in such a way that polynomial equations are used to design a finite-time tuning controller with known parameters and a finite-time tuning adaptive observer to estimate the parameters. Finally, a simple example of computer simulation, simulation results confirm the correctness of the design method.