Single-input mechanisms driven by relatively small cranks have been shown to have output link motions, describable as approximately simple harmonic functions of the input crank angular displacement. This paper presents a mathematical formulation for the approximate analysis and design of two-input, small-crank five-bar mechanisms for function generation. A perturbation technique is employed for the derivation of the approximate equations. Coefficients of the harmonic terms in the equations for an output link motion are obtained from the mechanism geometry and application of the perturbation technique. The output link motion is shown to be approximately described by a linear combination of two simple harmonic functions, in terms of the two input crank angles. Two mechanism design examples are presented to demonstrate the utility of the analytical development in the synthesis of five-bar mechanisms for function generation.
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December 1994
Research Papers
Kinematic Analysis and Design of Two-Input, Five-Bar Mechanisms Driven by Relatively Small Cranks
P. S. Basu,
P. S. Basu
Department of Mechanical Engineering, Southern Illinois University at Carbondale, Carbondale, IL 62901
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K. Farhang
K. Farhang
Department of Mechanical Engineering, Southern Illinois University at Carbondale, Carbondale, IL 62901
Search for other works by this author on:
P. S. Basu
Department of Mechanical Engineering, Southern Illinois University at Carbondale, Carbondale, IL 62901
K. Farhang
Department of Mechanical Engineering, Southern Illinois University at Carbondale, Carbondale, IL 62901
J. Mech. Des. Dec 1994, 116(4): 1108-1114 (7 pages)
Published Online: December 1, 1994
Article history
Received:
August 1, 1992
Revised:
July 1, 1993
Online:
June 2, 2008
Citation
Basu, P. S., and Farhang, K. (December 1, 1994). "Kinematic Analysis and Design of Two-Input, Five-Bar Mechanisms Driven by Relatively Small Cranks." ASME. J. Mech. Des. December 1994; 116(4): 1108–1114. https://doi.org/10.1115/1.2919494
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