在无线电电路中利用反馈线路改善性能指标和进行线路的自动控制是很普遍的。这个准则在判断系统是否稳定的同时给出了各环节对指标的相互影响变化关系。从而可以确定在给出的反馈频段,反馈深度或相位要求等指标时如何设计各个环节。因为这个准则是从开环各个环节的幅相特性来分析各环节对指标的相互影响关系和判断闭环的稳定性的,所以可用测试方法直 It is common to use feedback lines in radio circuits to improve performance and automate line control. This criterion gives the relationship between each link's influence on the index while judging the stability of the system. It is possible to determine how to design each link in the given feedback frequency band, feedback depth or phase requirements and other indicators. Because this guideline is from the open-loop all aspects of the amplitude and phase characteristics to analyze the various aspects of the relationship between the indicators and determine the stability of closed-loop, so the available test method