傅里叶光谱仪光程扫描的鲁棒H_∞控制设计  

Optical Path Scanning Design Based on Robust H_∞ Control for the Fourier Spectrometer

作　　者：粘伟[1,2] 刘兆军 林喆 NIAN Wei;LIU Zhaojun;LIN Zhe(Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China;Beijing Institute of Spacecraft System Engineering, Beijing 100094, China;Beijing Key Laboratory of Advanced Optical Remote Sensing Technology, Beijing 100094, China)

机构地区：[1]北京空间机电研究所,北京100094 [2]先进光学遥感技术北京市重点实验室,北京100094 [3]北京空间飞行器总体设计部,北京100094

出　　处：《航天返回与遥感》2018年第6期55-63,共9页Spacecraft Recovery & Remote Sensing

基　　金：国家重大科技专项工程

摘　　要：为满足星载时间调制型傅里叶光谱仪光程扫描速度稳定性要求,针对星载光谱仪精密扫描跟踪系统的特点,提出一种鲁棒H无穷(H∞)控制器设计方案。文章首先分析建立了光程扫描系统的数学模型;在此基础上,为达到控制性能要求和鲁棒性要求,采用H∞混合灵敏度的设计方法,阐述了鲁棒H∞控制器设计中加权函数的选择依据和确定过程,利用Matlab鲁棒控制工具箱得到H∞最优控制器。考虑卫星平台振动的影响,建立干扰源模型,对外界干扰的影响进行了仿真验证。仿真结果表明,所设计的鲁棒H∞最优控制器具有良好的扫描跟踪特性,对外界干扰具有良好的鲁棒性,达到了星载光谱仪对高信噪比、高光谱分辨率的光谱探测性能要求。To reach the speed stability requirements of the spaceborne time modulated Fourier spectrometer,the design scheme based on H∞robust control is proposed in view of the precise scanning and tracking of the spaceborne spectrometer.Firstly,the mathematical model of the scanning system is analyzed and then established.Secondly,the H∞hybrid sensitivity design method is used to achieve the control performance requirements.In the meantime,the selection criteria of the weighting function are explained and then the H∞optimal controller is obtained using the MATLAB robust control toolbox.Considering the influence of vibration of the satellite platform,the interference source model is established to verify the boundary interference influence.The simulation results show that the designed H∞robust controller has good performance in scanning and tracking as well as good robustness,achieving the requirements of the high signal-to-noise ratio and high spectral resolution in spaceborne spectrometer.

关 键 词：H无穷控制 鲁棒性 光程扫描 干扰模型 光谱探测 航天遥感 

分 类 号：TM301.2[电气工程—电机] TH744[机械工程—光学工程]