导弹三回路过载驾驶仪设计频带的灵敏度分析方法  

Sensitivity Analysis of Design Bandwidth of Missile Three-loop Acceleration Control

作　　者：孙明玮[1] 张利民[2] 陈增强[1] 

机构地区：[1]南开大学计算机与控制工程学院,天津300071 [2]辽宁工程技术大学机械工程学院,辽宁阜新123000

出　　处：《兵工学报》2014年第12期2023-2029,共7页Acta Armamentarii

基　　金：国家自然科学基金项目(61174094;61273138);天津市自然科学基金项目(13JCYBJC17400)

摘　　要：对于工程上常用的导弹三回路过载控制,由于气动力的不确定性分离在耦合的对象环节中,使得传统稳定裕度的物理意义无法直接体现闭环系统对于特征参数不确定性的鲁棒适用范围。通过将过载控制设计进行带宽参数化处理,然后采用D-分解方法通过图形的方式显示操纵力矩和恢复力矩系数对于闭环设计带宽的灵敏度,从整体上刻画系统的鲁棒稳定性。数值仿真结果表明,所提分析方法可以准确给出闭环系统对于主要不确定性因素的适用范围,同时揭示了设计带宽对于静不稳定与静稳定导弹的不同灵敏度变化规律,说明操纵力矩系数是重要的角速度反馈增益的决定因素。Because the aerodynamic uncertainties of a missile are distributed in the coupling subsystems for the popularly used three-loop acceleration autopilot,the traditional stability margins are unable to illustrate the robust range of the closed-loop system in relative to the uncertain characteristic parameters.The acceleration control is parameterized by using a design bandwidth,and then the closed-loop sensitivity of the restoring and manipulation moment coefficients with regard to this bandwidth is investigated in a unified manner by means of the D-decomposition method.The robust stability of the closed-loop system is described.The numerical examples demonstrate that the proposed method can provide the accurate robust stability boundary of the closed-loop system to the primary uncertain factors,revealing the variation rule of the sensitivity of the bandwidth to statically unstable and stable missiles.The key factor in determining the crucial angular velocity gain is also specified as the manipulation moment coefficient.

关 键 词：飞行器控制、导航技术 三回路驾驶仪 鲁棒性 灵敏度 频带 

分 类 号：V448[航空宇航科学与技术—飞行器设计]