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  HomeContents of Chinese Journal of Mechanical Engineering (English Edition),2001 No.3ESTIMATE OF DISCRETE NONLINEARITIES IN A MAINLY LINEAR DYNAMIC SYSTEM
ESTIMATE OF DISCRETE NONLINEARITIES

IN A MAINLY LINEAR DYNAMIC SYSTEM*

 

Chen Manru  Guo Qiang
Faculty of Design, Northwest University of Light Industry
Chen Yingru

 Hebei Highway Engineering Construction Group Co. Ltd.

 

Abstract: The class of system considered is a single degree of freedom undamped vibrating system with a clearance in which the dynamical behavior is described by a state-space representation in real time. The direct identification technique for the estimate of a clearance and other parameters in the system is presented in terms of least squares method and step-by-step iteration approach. For numerical simulation purpose, the simulated data are achieved by corrupting the modeled responses. The mathematical algorithm, which is put forward, has proven to be effective through a practical numerical example.

Key words: Vibrating system  Clearance  Linear regression  Numerical simulation


* Selected from Proceedings of 2000 the First International Conference on Mechanical Engineering; revised manuscript March 25, 2001

 

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