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Proceedings Paper

Detecting and quantifying friction nonlinearity using the Hilbert transform
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Paper Abstract

A simple methodology for identification and quantification of nonlinear effects such as Coulomb friction and backlash is desired for use in condition based maintenance programs for both structural and machine based applications. Typically, structural applications are passive and undergo small vibratory motion when an external excitation is presented to the system. A spring-mass system was used as the structural example. Machine applications are typically active and motion is excited by internal actuation of large motion within the system. An industrial SCARA robot was used as the machine based example. The Hilbert transform was tested for detection and quantification of Coulomb friction in both systems.

Paper Details

Date Published: 21 July 2004
PDF: 9 pages
Proc. SPIE 5394, Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems III, (21 July 2004); doi: 10.1117/12.539953
Show Author Affiliations
Michael A. Minnicino, Geo-Centers, Inc., Army Research Lab. (United States)
Henry J. Sommer, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 5394:
Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems III
Tribikram Kundu, Editor(s)

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