摘要
介绍了一种基于永磁同步电机的导弹电动舵机的组成及工作原理,针对电动舵机受参数摄动、负载变化及外扰影响大、刚度较差的特点,利用H2控制保证系统动态性能以及H∞控制在对象存在模型及参数不确定性和有界扰动时可以保证系统的全局稳定性的特性,设计了舵机的混合H2/H∞控制器。仿真结果表明,控制系统具有较强的抗扰性能,使系统在保性能前提下实现对外扰及系统参数摄动的鲁棒稳定。
The structure and principle of a missile electromechanical actuator on the basis of PMSM is introduced in this paper. Considering its feature of weak rigidity, being seriously influenced on parameter perturbation, load variance, and other disturbances, the mixed H2/H∞ controller is designed in which the dynamic performance of the system is ensured by H2 controller, while H∞ controller is used to keep the stability of the whole system when the objective parameters or models are uncertain, or there exist the limited disturbances. Simulation results show that this system has a good performance in disturbance suppression, thereby keep the robust stability of the whole system due to the parameter perturbation or other disturbance on premise of the ensured performance of the whole system.
出处
《弹箭与制导学报》
CSCD
北大核心
2003年第3期4-6,共3页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
导弹
飞行控制系统
电动舵机
控制器
永磁同步电机
工作原理
参数摄动
数学模型
electromechanical actuator
permanent magnet synchronous motor (PMSM)
mixed H_2/H_∞ control
disturbance suppression
parameter perturbation
