標題: Sensor and actuator placement for modal identification
作者: Shih, YT
Lee, AC
Chen, JH
機械工程學系
Department of Mechanical Engineering
公開日期: 1-九月-1998
摘要: In modal identification, the use of different actuator and sensor locations results in different frequency response functions (FRFs) and consequently affects the modes shown on the FRF plots. This paper presents a method of placing sensors and actuators to obtain reliable measured data for estimating the modal parameters. The method is based on proposed controllability and observability measures for second-order linear systems, which are suitable for identification purposes and have a physical interpretation on the FRF plots. These measures, combined with an objective criterion, provide a method for ranking the effectiveness of alternative actuator and sensor distributions and hence a rational basis for choosing their locations. The method is applied successfully to the selection of actuator and sensor locations for a set of target modes for the structural characterisation of a simulated system. Finally, an iterative procedure for performing modal surveys is proposed. (C) 1998 Academic Press.
URI: http://hdl.handle.net/11536/32424
ISSN: 0888-3270
期刊: MECHANICAL SYSTEMS AND SIGNAL PROCESSING
Volume: 12
Issue: 5
起始頁: 641
結束頁: 659
顯示於類別:期刊論文


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  1. 000076243400005.pdf