Polynomial Matrix Approach to Independent Component Analysis: (Part II) Application

Authors:	Sugimoto Kenji, Nara Institute of Science and Technology, Japan Suzuki Arata, Nara Institute of Science and Technology, Japan Nitta Masuhiro, Nara Institute of Science and Technology, Japan Adachi Naotoshi, Nara Institute of Science and Technology, Japan
Topic:	2.1 Control Design
Session:	Polynomial Design Methods: Applications
Keywords:	independent component analysisdisturbance suppressionfault detectionapplication of polynomial system analysis

Abstract

This paper proposes two types of application of the method given in the paper (PART I). The first is suppression of disturbance with unknown dynamics in control systems. Assuming that a disturbance enters into a system independently of the control input signals, the method makes it possible to identify a denominator polynomial matrix of the disturbance dynamics, and then to design an H infinity controller suppressing the effect of the disturbance. Numerical simulation is carried out to verify the effectiveness of this approach. The second is fault detection of mechanical systems subject tovibration from the environment. The vibration source is assumed to be unmeasurable, and yet the method achieves detection of a parameter change of the system due to fault. To test the effectiveness of the second approach, experiment with a flexible structure has been carried out.