基于自抗扰算法的“动中通”系统控制策略

An Active Disturbance Rejection Control Strategy for SOTM Servo Control System

摘要:

动中通”(SOTM)伺服控制系统通常采用三闭环PID控制策略进行控制器的设计;然而,由于系统扰动和系统时变性参数的存在,传统PID算法难以保证“动中通”系统稳定、可靠地工作;针对传统控制策略的弊端,建立了“动中通”系统数学模型,并提出了一种基于自抗扰(ADRC)算法的双闭环控制策略;仿真实验表明,基于ADRC的双闭环控制策略不仅具有更快的响应速度和更高的控制精度,还有更强的鲁棒性,能有效地弱化系统扰动的影响,满足“动中通”系统的功能需求。

Abstract:

Satcom-on-the-Move (SOTM) servo control system is usually designed as a three closed-loop system with PID algorithm. However, traditional PID algorithm can hardly meet the requirements of SOTM servo control system because of the influences from the time-varying property of the parameters and the disturbance. In this paper, a mathematical model of SOTM system is depicted and a dual closed-loop system with active disturbance rejection control (ADRC) algorithm is proposed. Compared with the traditional PID algorithm, the proposed algorithm has many advantages, such as faster response and higher precision, robustness to the influence of the load disturbance, etc.. The simulating results have verified these advantages.