OPTIMAL SENSOR PLACEMENT AND ACTIVE VIBRATION SUPPRESSION OF LARGE FLEXIBLE SPACE STRUCTURES

摘要

The objective of this research is to experimentally validate a sensor placement algorithm derived from the D-optimality criteria for experiment design. The D-optimality criteria, defined as the maximum determinant of the Fisher Information Matrix, results in a separation principle that decouples the problems of optimal input design and optimal sensor design such that each can be solved independently of each other. The sensor placement design is experimentally verified on a 63-DOF planar truss. In addition, collocated sensor and actuator pairs are used for active vibration suppression of the same truss. Tests are performed in simulation and experimentally and the results are presented.