本文通过对具有输出选通窗的一类工程系统的性能指标分析,确定出这类系统在一定的性能指标约束下(如稳定度、切换频率与脉冲响应性能等),系统反馈控制的设计目标.通过对文献[1]中提出的协方差配置控制的改造,给出了实现这一设计目标的方法,并举例说明该设计方法具有直接、简单的特点. In this paper, the performance index of a kind of engineering system with output gating windows is analyzed to determine the design goals of the system under certain performance constraints (such as stability, switching frequency and impulse response) Through the modification of the covariance configuration control proposed in [1], the method to achieve this design goal is given, and an example is given to show that the design method has direct and simple features.