一种改进的攻击机动目标的导弹滑模变结构导引律  

An Improved Missile Guidance Law of Variable Structure for Attacking Maneuvering Target

作　　者：潘潜[1] 周德云[1] 冯琦[1] 

机构地区：[1]西北工业大学电子信息学院,西安710129

出　　处：《计算机测量与控制》2013年第7期1852-1854,1857,共4页Computer Measurement &Control

基　　金：航空科学基金(20080553019)

摘　　要：导弹采用传统滑模变结构导引律攻击目标时,能够对参数摄动和外界干扰具有较强的鲁棒性,但当目标进行大机动时,存在目标加速度无法精确测量、视线角速率容易发散及导引律参数不易确定等缺点;针对上述问题,在研究变结构控制理论的基础上,将目标加速度视为干扰,设计一种快速趋近律,并采用模糊控制与神经网络理论分别对导引律比例参数项k与开关参数项ξ进行自适应调节,提出一种改进的攻击机动目标的导弹滑模变结构导引律;仿真结果表明,改进的导弹变结构导引律较传统变结构导引率,能够有效地削弱系统抖振,缩短导引时间,提高导引精度,满足一定的导弹导引要求。When the traditional variable structure guidance law was used for attacking target of missile, the interferer of environment and jitter of parameter could be weaken. If the target moves with high acceleration, some problems exist, such as the destabilization for angular rate of line-of- sight and indetermination for guidance law. In view of the shortcomings, An Improved missile guidance law of variable structure was presented, which adjust the parameter adaptively by fuzzy control and neural network theory. Simulation results indicated that the system jitter was weakened, guiding time was shortened, and the guiding precision was increase.

关 键 词：变结构导引律 模糊控制 神经网络 参数自适应调节 

分 类 号：V448[航空宇航科学与技术—飞行器设计]