基于模糊控制的有限时间收敛制导律  

Guidance Law with Finite Time Convergence Based on Fuzzy Logic

作　　者：赵海斌[1] 李伶[1] 孙胜[1] 

机构地区：[1]北京航天自动控制研究所,北京100854

出　　处：《航天控制》2014年第3期33-37,共5页Aerospace Control

摘　　要：针对有限时间收敛制导律中非线性控制项参数的调节,提出了一种基于模糊控制理论的改进有限时间收敛制导律。该方法结合模糊控制理论和有限时间收敛制导规律,首先给出制导参数在有限时间收敛的前提下需要满足的范围,分析参数变化对系统收敛的影响效果;其次根据模糊控制理论设计模糊控制器实现参数自适应调节。数学仿真结果表明此设计可以有效地提高系统收敛速度并且抑制末端过载的高频抖振。A new method based on fuzzy logic is introduced to adjust parameters of nonlinear control in guidance law with finite time convergence.A finite time convergence theory is used to obtain bound of parameters,and then the influences for convergence are discussed.On the basis of fuzzy logic,an adaptive controller is designed,which is according to bound and influences mentioned.The simulation results show that the convergence of this improved guidance law is effective and high frequency chattering of acceleration is restrained.

关 键 词：导引律 有限时间收敛 模糊逻辑 

分 类 号：V448.133[航空宇航科学与技术—飞行器设计]