Pulse control for vibration attenuation in nonlinear mechanical systems

Document Type

Conference Proceeding

Publication Date

12-1-1988

Abstract

Most mechanical systems have complaint elements in power drive trains. When a complaint system is preceded by a zero-order hold or actuated by pulse type inputs, the compliance of the system causes vibration. The design and implementation of conventional linear control schemes to eliminate vibratory motion, e.g., notch filter, is not straightforward because the system dynamics are not described by a linear transfer function. This paper presents pulse control to attenuate the amplitude of vibratory motion in a two degree of freedom system subjected to nonlinear friction. This scheme is based on the analysis of the system's impulse response. This pulse controller augments an existing main controller for positioning and improves the performance of the closed loop system by shortening the settling time. The pulse control scheme is tested by simulation and experiment on a laboratory positioning table.

Identifier

0024141470 (Scopus)

Publication Title

American Society of Mechanical Engineers Dynamic Systems and Control Division Publication DSC

First Page

103

Last Page

114

Volume

11

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