一种基于固定配平的飞行器滚转制导律研究  

A Vehicle Rolling-Guidance Law Based on Fixed Trimmed Angle of Attack

作　　者：李自行[1] 李高风[1] 黄瑞玲 

机构地区：[1]北京控制与电子技术研究所,北京100038 [2]北京希曼顿自动化研究所,北京100080

出　　处：《空间控制技术与应用》2012年第6期23-26,49,共5页Aerospace Control and Application

基　　金：部级预研资助项目

摘　　要：具有固定配平攻角的飞行器升力大小不可控,只能通过单通道的滚动控制实现飞行轨迹的控制.为实现精确制导,提出了一种基于固定配平攻角飞行器的滚转制导律.建立了固定配平攻角飞行器相对目标点的运动关系方程,分析了方程中各部分的物理意义;给出了滚转制导的基本导引关系,证明了基本导引关系的正确性,得出了滚转制导指令的计算方法;通过数学仿真分析了滚转制导导引弹道的特点.仿真表明,滚转制导通过一定的滚动策略消耗掉了多余的升力,达到了精确控制飞行器落点的目的.The magnitude of lift force of reentry vehicles with fixed angle of attack is not controllable.The control of the flight path can only be achieved by roll-axis control action.In order to accurately steer the fixed angle of attack reentry vehicle,a rolling-guidance law based on fixed trimmed angle of attack(FTAA) is presented.The FTAA vehicle motion equation with respect to the target placement is established.The physical meaning of the motion equation is analyzed.The basic guidance method of the rolling-guidance is put forward.The correctness of the guidance method is proved.The calculation method of the rolling-guidance command is also given.The ballistic characteristic of the rolling-guidance is analyzed by a mathematical simulation.The simulation result illustrates that,by certain rolling strategy,the rolling-guidance law can consume the extra lift,achieving the accurate landing-point control of the vehicle.

关 键 词：固定配平飞行器 滚转制导律 制导精度 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]