针对近程巡飞弹纵向控制系统设计中存在系统模型的非线性、不确定性、耦合性等问题, 引入了自抗扰控制(ADRC)方法。介绍了ADRC的结构、原理、算法实现及参数整定规则, 设计具有解耦抗干扰能力的ADRC。针对扩张状态观测器线性区间宽度参数较小时出现的震颤现象和控制性能降低的问题, 提出了一种改进非线性函数的方法, 设计了纵向运动控制系统。在Simulink平台下进行仿真实验, 仿真结果表明, 提出的改进方法有效解决了震颤问题, 增强了控制器性能, 设计的改进自抗扰纵向巡飞控制系统具有良好的控制性能, 验证了该改进方法及控制系统的合理性。

Considering the problems of nonlinearity,uncertainty,and coupling existed in system model of longitudinal control system of short-range loitering missile,Active Disturbance Rejection Controller (ADRC) is integrated to deal with them.The structure,principle,algorithm implementation and parameter setting rules of ADRC are presented here.As to the trembling phenomenon and control performance degradation when the linear interval width of Extended State Observer (ESO)is small,a method of improved nonlinear function is proposed for design of the longitudinal motion control system.The result of simulation experiments with Simulink platform show that:1) The improved method effectively solves the problem of trembling and enhances the controller performance;and 2) The control system based on improved ADRC has good control performance.Therefore,the rationality of the improved method and control system is verified.