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雷达天线伺服系统中总是存在着若干的非线性,这些非线性在一定条件下有的可以用线性环节来近似处理,采用线性控制理论来分析所得出的结论也不会产生大的误差。但是有些非线性则不然,它将使系统性质发生很大的变化,甚至会出现一些为线性化方程式所不能反映的特殊现象。因此在伺服系统设计中,特别是对于要求跟踪精度高,快速响应性能好,调速范围很宽的雷达伺服系统,对非线性因素的影响必须给予重视。下
There are always some nonlinearities in the radar antenna servo system. Some of these nonlinearities can be approximated linearly under certain conditions, and the conclusions drawn from linear control theory will not produce large errors. However, some nonlinearities will not change the nature of the system greatly, and some special phenomena may even occur that can not be reflected by the linearized equations. Therefore, in the design of servo system, especially for the radar servo system requiring high tracking accuracy, fast response and wide range of speed regulation, the influence on nonlinear factors must be taken seriously. under