摘要
建立了球坐标系下的三维导弹与目标相对运动模型,基于Lyapunov方法和输入状态稳定性(ISS)分析,设计了非线性三维鲁棒制导律,不需要估计目标加速度,实现了对机动目标的扰动抑制跟踪,并且比传统的比例制导律在拦截时间及鲁棒性方面具有优势。仿真结果表明,对于目标作复杂的大机动逃逸运动,仍然能够取得较好的跟踪性能和鲁棒性。
In intercepting maneuvering targets in the air by missiles, the relative movement of the missile and the target is nonlinear and very complex. We built up a three-dimensional model in a spherical coordinate system for describing the relative movement of them. A new 3D nonlinear robust guidance law is derived aimed at interception of the highly maneuvering targets. The guidance law is developed based on the theory of control Lyapunov functions and Input-to-State Stability （ISS） notion, a tool for disturbance rejection. The guidance algorithm is very simple and needs not the boundary of the acceleration of target. It has less intercepting time and stronger robustness properties than the conventional proportional navigation. The simulation results indicate that the guidance law exhibits strong robustness properties and good tracking performance against disturbances from target＇s escape maneuvering.
出处
《电光与控制》
北大核心
2008年第5期16-19,共4页
Electronics Optics & Control
基金
国家自然科学基金(60674029)
高等学校博士点科研基金(20050358044)
关键词
目标拦截
导弹
非线性系统
鲁棒控制
制导律
target interception
missile
nonlinear system
robust control
guidance law
