Experiments for Large Space Structures Identification

Algorithm in the Time Domain for a Rectangular Input

Abstract

This paper describes the theory and applications of a method of system Identification using Hankel matrices in the time domain. ERA (Eigen-system Realization Algorithm) is a typical system realization method utilizing Hankel matrices. This method, however, assumes ideal impulse response. In this paper, new iterative algorithm by least square method is developed for practical applications in the space environment. Ground-based experiments on air-bearing table attached by the flexible isogrid pannel are carried out to demonstrate the validity of the new method.