基于扰动预测的高超声速飞行器高精度姿态控制器设计  

High-Precision Attitude Control Design for a Hypersonic Vehicle Based on Disturbance Prediction

作　　者：葛致磊[1] 宋波涛 郭锐[3] 

机构地区：[1]西北工业大学航天学院,陕西西安710072 [2]上海机电工程研究所,上海200233 [3]解放军航天医学工程研究所,北京100094

出　　处：《西北工业大学学报》2015年第1期123-128,共6页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(61374209);上海航天科技创新基金(ST2013004)资助

摘　　要：提供了一种在高超声速飞行器姿态运动数学模型具有强耦合、不确定性以及非线性的特点的情况下,依然能够实现对其姿态运动进行高精度控制的控制器设计方法。该方法首先采用预测滤波器对系统的不确定性进行估计和补偿,通过对系统的不确定性进行补偿,大大减小了模型误差,提高了控制精度;其次在此基础上采用反馈线性化的方法对补偿后的系统进行解耦,并对解耦后的系统设计变结构控制器。通过仿真表明文中所设计的方法确实能够实现高超声速飞行器的高精度姿态控制。the attitude kinematic equation of hypersonic vehicle is described as a uncertainty nonlinear system with coupling considered. For this system, this paper presents a new method for the design of a high accuracy attitude control system. Firstly, by combining SMC （Slide Mode Control） controller with FBL （Feed Back linearization）, the control of decoupling, linear system is achieved. However, there are two problems in using this method. One problem is that it is unobservable to feedback of system. The other is that control error cannot be removed. Accord- ing to our analysis, control error is caused by uncertainties of model. For solving these problems, the prediction ill- ters are used. The simulation results and their analysis show preliminarily that the method is effective for improving the control precision of hypersonic vehicle.

关 键 词：变结构控制 预测滤波 反馈线性化 高超声速飞行器 

分 类 号：TJ765.2[兵器科学与技术—武器系统与运用工程]