挠性空间结构的可辨识性研究

本文重点研究挠性空间结构系统的可辨识性。研究表明，系统的可辨识性取于系统构形和控制器、敏感器的配置模式。对于配置了分布式测量敏感器的挠性外系统，系统模态在整个空间区域上的取值可由输入输出数据确定，条件是控制向量与系统有关模态不正交；对于配置了点测量敏感器的挠性体系统，系统模态在控制点和测量点的取值信息可由输入输出数据确定，条件是控制向量与系统有关模态不正交并且测量点与系统模态的零点不重合。由此，本

IDENTIFIABILITY OF FLEXIBLE SPACE STRUCTURES

This paper mainly studies identifiability of Flexible Space structures (FSS). The results denotes that the identifiability of FSS depends on the configuration, and the positioning of actuators and sensors. For FSS system under distributed measurement, the complete identifiability requires that the control imput is no f perpenticular to the modes of the system. For FSS system under pointwise measurement, the incomplete identifiability requires that not only the control input is not prepenticular to the modes of the system, but also the points at which the sensors is located are not the same as the zeros of the modes of the system. Thus this paper proposes the concepts of complete and incomplete identifiability, and gives the associated necessary and sufficient corditions.