机载光电稳瞄平台的扰动观测分数阶控制方法

随着机载光电稳瞄平台在国防军事领域的广泛应用,现代武器系统对机载光电稳瞄平台控制技术的要求越来越高.鉴于此,结合分数阶控制和扰动观测器原理,提出一种基于扰动观测的分数阶控制方法,用于提高机载光电稳瞄平台控制系统的各项性能.给出相应的闭环控制系统结构和控制器设计方法,并对其输入输出特性、扰动抑制能力等性能进行研究.在阶跃响应、正弦跟踪、扰动抑制和鲁棒性等仿真实验中,所提出控制器均表现良好.仿真结果表明,所提出基于扰动观测的分数阶控制器不仅具有分数阶控制响应速度快、鲁棒性强的特性,还表现出扰动观测器抗扰能力强的优点,可以达到提高机载光电稳瞄平台控制系统性能的目的.

Disturbance observation fractional order control method for airborne photoelectric stabilized platform

With the wide application of airborne photoelectric stabilized platforms in the field of national defense and military, the requirement of the modern weapon system for the control technology of the airborne photoelectric stabilized platform is getting higher and higher. Therefore, based on the fractional-order control and the principle of disturbance observers, a fractional-order control method based on disturbance observation is proposed to improve the performance of the airborne photoelectric stabilized platform control system. This paper gives the corresponding closed-loop control system structure and the controller design method. Then, the input and output characteristics and anti-interference ability are studied. In the simulation experiments of step response, sinusoidal tracking, disturbance suppression and robustness, the proposed controller performs well. Simulation results show that the proposed controller has the characteristics of fast response and strong robustness of fractional-order control, and also shows the strong anti-interference ability of the disturbance observer. The purpose of improving the performance of the airborne photoelectric stabilized platform control system can be achieved.