三维最优制导律设计的旋量方法  

A Twist-based Method for 3D Optimal Guidance Law

作　　者：朱华勇[1] 彭双春[1] 孙未蒙[2] 沈林成[1] 

机构地区：[1]国防科技大学机电工程与自动化学院 [2]92854部队

出　　处：《国防科技大学学报》2010年第4期110-115,共6页Journal of National University of Defense Technology

基　　金：国家安全重大基础研究资助项目(6138101001)

摘　　要：针对BTT导弹制导过程中的双通道耦合问题,设计了一种非解耦的三维最优制导律。通过矢量方法和旋量方法分别建立了视线角速度模型和视线方位模型,从而得到导弹制导的三维模型。基于视线角缓变的假设,对制导模型进行了简化,得到其线性模型。分别针对无终端约束和有终端约束情况,运用二次型最优方法推导了最优三维制导律。该制导律避免了通道解耦,能够满足BTT导弹精确制导的要求。Aiming at the coupling of bank-to-turn （BTT） missile,a non-decoupling three-dimensional （3D） guidance law was proposed. Firstly,the 3D guidance model was established after the line of sight （LOS） angles velocity model was established through vectors description,and the azimuth＇ change of LOS was described based on the twist method. Secondly,the guidance model was simplified and the linear model was derived on the assumption that LOS angles＇ change is slow. Finally,the 3D optimal guidance laws were designed respectively using the quadratic optimal control,corresponding to no ending constraints and ending constraints. The proposed guidance law can be satisfied with the guidance precision of BTT missile since it is able to avoid the information loss caused by the decoupling method.

关 键 词：三维制导 旋量 倾斜转弯 最优控制 

分 类 号：V448[航空宇航科学与技术—飞行器设计]