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RESEARCH PAPERS

Modeling and Experimental Evaluation of Asymmetric Pantograph Dynamics

[+] Author and Article Information
S. D. Eppinger, D. N. O’Connor, W. P. Seering, D. N. Wormley

Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139

J. Dyn. Sys., Meas., Control 110(2), 168-174 (Jun 01, 1988) (7 pages) doi:10.1115/1.3152667 History: Received February 11, 1986; Online July 21, 2009

Abstract

High-performance pantograph design requires control of pantograph dynamic performance. Many pantograph dynamic models developed to aid in the design process have employed two degrees of freedom, one for the head mass and one for the frame. In this paper, the applicability of these models to symmetric and asymmetric pantograph designs is reviewed. Two degree-of-freedom models have been shown to be appropriate to represent a number of symmetric pantograph designs. To represent the asymmetric designs considered in this paper, an additional degree of freedom representing frame dynamics has been introduced to yield a three degree-of-freedom nonlinear dynamic performance model. The model has been evaluated with experimental data obtained from laboratory dynamic testing of an asymmetric pantograph.

Copyright © 1988 by ASME
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