RESEARCH PAPERS: Mechanisms Papers

Linkage Synthesis Using Algebraic Curves

[+] Author and Article Information
J. L. Blechschmidt, J. J. Uicker

Department of Mechanical Engineering, The University of Wisconsin-Madison, Madison, WI 53706

J. Mech., Trans., and Automation 108(4), 543-548 (Dec 01, 1986) (6 pages) doi:10.1115/1.3258767 History: Received July 01, 1986; Online November 19, 2009


A method to snythesize four-bar linkages using the algebraic curve of the motion of the coupler point on the coupler link of the four-bar linkage is developed. This method is a departure from modern synthesis methods, most of which are based upon Burmester theory. This curve, which is a planar algebraic polynomial in two variables for the four-bar linkage, is a trinodal tricircular sextic (sixth order). These properties are used to determine the coefficients of the curve given a set of points that the coupler point of the coupler link is to pass through. The coefficients of this curve are nonlinear functions of the linkage parameters. The resulting set of nonlinear equations are solved using iterative/optimization techniques for the linkage parameters.

Copyright © 1986 by ASME
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