Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Subspace-Based Algorithms for Structural Identification, Damage Detection, and Sensor Data Fusion | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 69136 13 pages doi 2007 69136 Research Article Subspace-Based Algorithms for Structural Identification Damage Detection and Sensor Data Fusion Michele Basseville 1 2 Albert Benveniste 1 3 Maurice Goursat 1 4 and Laurent Mevel1 3 1IRISA Campus Universitaire de Beaulieu 35042 Rennes Cedex France 2 CNRS Campus Universitaire de Beaulieu 35042 Rennes Cedex France 3INRIA Campus Universitaire de Beaulieu 35042 Rennes Cedex France 4INRIA Domaine de Voluceau Rocquencourt BP 105 78153 Le Chesnay Cedex France Received 2 February 2006 Revised 3 March 2006 Accepted 27 May 2006 Recommended by George Moustakides This paper reports on the theory and practice of covariance-driven output-only and input output subspace-based identification and detection algorithms. The motivating and investigated application domain is vibration-based structural analysis and health monitoring of mechanical civil and aeronautic structures. Copyright 2007 Hindawi Publishing Corporation. All rights reserved. 1. INTRODUCTION Framework Detecting and localizing damages for monitoring the integrity of structural and mechanical systems is a topic of growing interest due to the aging of many engineering constructions and machines and to increased safety norms. Many current approaches still rely on visual inspections or local nondestructive evaluations performed manually for example acoustic ultrasonic radiographic or eddy-current methods. These experimental approaches assume an a priori knowledge and the accessibility of a neighborhood of the damage location. Automatic global vibration-based monitoring techniques have been recognized to be useful alternatives to those local evaluations 1-5 . Many structures to be monitored . civil engineering structures subject to wind and earthquakes aircrafts subject to turbulence are subject to both fast and unmeasured variations in their environment and small .
