应用粒子群优化的导弹定结构H_∞控制器设计  

Fixed-structure H_∞ controller design for missile autopilot with particle swarm optimization

作　　者：张民[1] 应巧萍 

机构地区：[1]南京航空航天大学自动化学院,南京211100

出　　处：《哈尔滨工业大学学报》2016年第10期83-90,共8页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金(61174197)

摘　　要：为解决传统鲁棒控制方法设计的控制器阶数过高,而经典PID控制方法又无法在设计过程中保证鲁棒性能的问题,采用基于约束粒子群优化的定结构H_∞控制器设计方法,把两者各自的优势结合起来并将其应用到导弹控制器的设计中.采用一种基于梯度的粒子修正算法对违反约束条件的粒子进行修正,通过典型测试函数测试并和常用的其他3种约束优化算法进行性能对比,表明了该算法在处理约束优化问题上的优越性.同时,以样例导弹三通道模型为控制对象,提出了时域性能和鲁棒性能兼顾的性能指标函数和约束条件,针对典型固定控制结构,应用梯度修正粒子群算法设计了控制器.仿真结果表明,样例导弹控制系统在满足各项时域性能指标的同时,也满足鲁棒性能指标,达到了设计要求.In order to solve the high order controllers caused by traditional robust design method and the robust performance issues in classical PID method design process,a new kind of fixed-structure H_∞controller design method based on constrained particle swarm optimization algorithm is proposed and applied to the missile controller design by taking the advantages of both robust method and the PID method. A gradient-based correction algorithm is used to amend the violating constraint particles,which shows the superiority of this method by comparing performance test,test functions and other three commonly used constrained optimization algorithms.Meanwhile,for the three-channel sample missile control object model,the performance index function in time domain performance,the robustness properties and constraints are provided,and then the controller is designed by adopting the gradient-based correction particle swarm algorithm for the typical missile fixed control structure.The simulation results show that the sample missile control system meets the time domain performance index and the robust performance index.

关 键 词：导弹 定结构 控制 粒子群 优化 

分 类 号：V448[航空宇航科学与技术—飞行器设计]