一种基于变结构控制的制导技术研究

A Research on Guidance Law Based on Variable Structure Control

关于制导系统精度的研究,提出一种基于变结构控制的自寻的导弹末制导的方案,为提高制导性能和精度,利用Lya-punov稳定性判据,通过在变结构控制的可达性和稳定性条件下,利用相关理论进行分析,形成制导控制量,将传统的制导方程变换为一般的状态方程,然后近似线性化处理,可进行变结构控制与制导技术的结合,得出制导控制算法。在满足稳定性的前提下,改善现有的制导律的精度。同时,将方案与传统的比例制导(PN)进行比较,并进行仿真。仿真结果表明,制导方法精度和性能明显高于比例制导,可为设计提供可靠依据。

Propose a program based on variable structure control for the homing-missiles in end-game guidance regions.Starting from the Lyapunov stability criterion,through the analysis to the conditions of the variable structure control and stability,thereby forming the final amount of control.The traditional guidance equation was transformed to the state equation,and approximate linearization was processed and the variable structure control and guidance technology was combined,then guidance control algorithms were obtained.Thus,under the premise of meeting the stability,the good characteristics of variable structure control in the guidance gave full play,thereby improving the accuracy of the existing guidance law.At the same time,there is a comparison between the program with the proportion traditional guidance law（PN）,and the simulation results show that this program was significantly higher than PN,showing good performance.