RESEARCH PAPERS: Mechanisms Papers

Development of Knowledge Base for Designing Linkage-Type Dwell Mechanisms: Part 2—Application

[+] Author and Article Information
Sridhar Kota, Arthur G. Erdman, Donald R. Riley

Productivity Center, Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455

J. Mech., Trans., and Automation 109(3), 316-321 (Sep 01, 1987) (6 pages) doi:10.1115/1.3258796 History: Received July 01, 1986; Online November 19, 2009


Knowledge acquisition is a big bottleneck in any expert system development. Several “rules-of-thumb” are developed for designing linkage-type dwell mechanisms. These rules of thumb are based on path curvature theory (Part 1 of this paper) and systematic synthesis, analysis and classification of straight-line, circular-arc and symmetrical coupler-curve generating linkages. The methods of representing the domain-specific knowledge in an expert system are discussed here. “Frames” for structural representation of knowledge and “production rules” to control the reasoning during the design process are proposed here. Frames and rules, in the light of dwell-mechanism synthesis are presented. Finally, a conceptual design example illustrates the various stages that the actual expert system goes through in the design process when these concepts are fully developed and programs are written out in LISP. These concepts are developed with an eye toward future development of a general expert system for type and dimensional synthesis of mechanisms.

Copyright © 1987 by ASME
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