Residual Vibration Reduction Using Vector Diagrams to Generate Shaped Inputs

[+] Author and Article Information
W. Singhose, N. Singer

Convolve, Inc., One Quarter Mile Road, Armonk, NY 10504

W. Seering

Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA

J. Mech. Des 116(2), 654-659 (Jun 01, 1994) (6 pages) doi:10.1115/1.2919428 History: Received July 01, 1990; Revised April 01, 1993; Online June 02, 2008


This paper describes a method for limiting vibration in flexible systems by shaping the input to the system. Unlike most previous input shaping strategies, this method does not require a precise system model or lengthy numerical computation; only estimates of the system natural frequency and damping ratio are required. The effectiveness of this method when there are errors in the system model is explored and quantified. Next, an algorithm is presented, which, given an upper bound on acceptable residual vibration amplitude, determines a shaping strategy that is insensitive to errors in the estimate of the natural frequency. Finally, performance predictions are compared to hardware experiments.

Copyright © 1994 by The American Society of Mechanical Engineers
Topics: Vibration
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