放宽静稳定性高超声速飞行器的增稳控制方法  

Stability augmentation control method for hypersonic vehicles with relaxed static stability

作　　者：梁冰冰[1,2] 江驹[1] 吴雨珊 甄子洋[1] 

机构地区：[1]南京航空航天大学自动化学院,江苏南京210016 [2]空间物理重点实验室,北京100076

出　　处：《哈尔滨工程大学学报》2015年第10期1365-1369,共5页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(61304223);教育部高等学校博士科学点专项科研基金资助项目(20123218120015);南京航空航天大学研究生创新基地(实验室)开发基金资助项目(kfjj201420)

摘　　要：放宽静稳定性可以解决高超声速飞行器在高超声速飞行时正稳定裕度过大的问题,但是会造成亚声速飞行阶段飞行器稳定性下降。针对高超声速飞行器在亚声速飞行时稳定性不足的问题,采用经典反馈控制和LQ最优控制方法,设计了2种不同的增稳控制系统并应用于放宽静稳定后的高超声速飞行器。数值仿真结果表明,LQ最优控制增稳系统较经典反馈增稳控制系统具有更好的动态增稳效果和更强的鲁棒性能,因此LQ最优控制下的增稳系统拥有更好的增稳效果和更理想的抗鲁棒特性。The relaxed static stability can solve the problem of hypersonic vehicles that the positive stability margin is too large in a supersonic flight,whereas it causes stability decreasing of the vehicle in the period of flying with subsonic speed. In order to solve such insufficiency in stability of the hypersonic vehicle ＇s flight in the subsonic flight period,the classical feedback control and LQ optimal control methods are applied to the design of two kinds of stability augmentation system for the control of hypersonic vehicle with relaxed static stability. The numerical simulation results show that in comparison to classical feed-back stability augmentation control system,the stability augmentation system with LQ optimal control methed has better stability augmentation effect and stronger anti-robustness characteristics,and therefore,the stability augmentation system under the LQ optimal control has better stability augmentation effect and more ideal anti-robustness characteristics.

关 键 词：高超声速飞行器 增稳控制系统 放宽静稳定 最优控制 

分 类 号：V249[航空宇航科学与技术—飞行器设计]