为满足某新型稳瞄伺服系统控制精度的要求, 重新设计该系统的伺服控制器。在简要描述该稳瞄伺服系统的结构及工作原理的基础上, 对系统的各个模块建立数学模型。提出将自抗扰控制器应用于系统的速度环, 将经过改进的非线性PID (NLPID)控制器应用于电流环, 并在Matlab/Simulink仿真环境下结合S-Function模块对系统进行仿真研究。仿真结果表明, 所设计的控制器不仅跟踪精度高, 而且具有较好的扰动隔离性能以及很强的适应性和鲁棒性, 为高精度稳瞄伺服系统的进一步研究提供理论参考。

In order to meet the high-precision requirements of a new fixed-aiming servo control system, the servo controller of the servo system is redesigned.The composition and working principle of the fixed-aiming servo system are introduced, and the mathematical model of each module of the system is established. The Auto-Disturbance Rejection Controller (ADRC) is applied to the system's speed loop, and the improved Nonlinear PID (NLPID) controller is applied to the current loop.The system is simulated by the S-Function module in the Matlab/Simulink simulation environment. The simulation results show that, the designed controller not only has high tracking accuracy, but also has good disturbance isolation performance, high adaptability and strong robustness, which provides a theoretical reference for the further study of high-precision fixed-aiming servo system.