北京航空航天大学学报 ›› 2009, Vol. 35 ›› Issue (3): 322-325.

• 论文 • 上一篇    下一篇

基于二阶滑模的导弹控制系统设计

陈 洁, 顾文锦, 周绍磊   

  1. 海军航空工程学院控制工程系, 烟台 264001
  • 收稿日期:2008-03-17 出版日期:2009-03-31 发布日期:2010-09-16
  • 作者简介:陈 洁(1978-),女,山东烟台人,博士生,hjhychenjie@tom.com.

Missile control systems design based on second order sliding mode theory

Chen Jie, Gu Wenjin, Zhou Shaolei   

  1. Department of Control Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China
  • Received:2008-03-17 Online:2009-03-31 Published:2010-09-16

摘要: 过载控制是近年来导弹控制律设计领域出现的一种新的非线性控制方法,引起越来越多的重视,但是在采用过载控制方法对侧滑转弯(STT, Skid-To-Turn)超音速巡航导弹纵向回路控制系统设计过程中,由于过载输出与舵偏输入之间存在非最小相位现象,导致系统零动态不稳定.提出用输出重定义将系统状态进行转换的思路,利用内部状态在平衡态时应具有的响应作为其期望参考轨迹,将输出跟踪转化为状态跟踪,以保证系统的零动态稳定.采用二阶滑模设计控制律,消除了一阶滑模所固有的颤振现象,用Lyapunov函数确定出控制器参数,保证了对系统输出的跟踪.鉴于攻角不易精确测量而导致了系统状态不完全可测,控制律设计过程中设计了攻角观测器解决了上述问题.系统仿真研究表明,根据上述方法设计的系统具有比较理想的稳定性和鲁棒性,同时具有更好的动态性能.

Abstract: As a novel nonlinear control method, over-load control has quickly developed in the field of missile control law design in the recent years, but during the design of the skid-to-turn(STT) supersonic cruise missile pitch channel control system based on over-load control, the system exits non-minimum phase phenomena between over-load output and rudder input, that causes zero dynamic unstable. The output-redefinition method was adopted to translate system state, regard the internal states steady-state response as the expected reference trace, translate output track into state track, that guaranteed zero dynamic stable. The controller was designed by adopting second order sliding mode to eliminate inherence chatter of sliding mode control. Lyapunov function was used to determine the above controller parameter to guarantee the tracing of original system output, the attack angle observer was designed to deal with the problem of incomplete obtainable system state that was induced by attack angle uneasily measured. Simulation results show that the approach can increase robustness and stability, the system owns better dynamic performance.

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