针对离散时间变结构系统区别于连续时间情形的特点 ,以单变量系统为例 ,提出了一种新的离散时间变结构控制方法 ,其特点是能够使得系统状态于有限时间进入准滑动模态 ,且准滑动模态能够渐近地趋近于理想准滑动模态。 Aiming at the characteristics of discrete time variable structure system distinguished from continuous time, a new discrete time variable structure control method is proposed by taking the single variable system as an example, which is characterized by enabling the system state to enter the quasi-sliding mode in a finite time, And the quasi-sliding mode can approach the ideal quasi-sliding mode asymptotically.