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    Automatic Selection of Mechanism Designs from a Three-Dimensional Design Map

    Source: Journal of Mechanical Design:;1992:;volume( 114 ):;issue: 003::page 359
    Author:
    S. Kota
    DOI: 10.1115/1.2926561
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Often a simple (four-bar linkage) mechanism to trace a desired path is sought. Dimensions of linkages to trace a specified coupler curve exactly are difficult to determine. Precision point techniques do not guarantee that the desired path will be generated. The methodology presented in this paper is based on indirect synthesis approach to select four-bar linkages that trace a given desired path. A practical, computer-aided three-dimensional design chart for the selection of four-bar linkage candidate designs that trace symmetrical paths is presented. It is based on hypothesis that any arbitrary path can be approximated by a symmetrical path at least for the purpose of choosing an initial design. Four-bar linkages that generate symmetrical paths are easier to design and exhibit a definite pattern of changes in their shape as the linkage parameters are varied. General design categories and the corresponding solution subspaces in the 3-D design map are identified to aid in the selection of candidate designs. The automation of the design-selection process requires a satisfactory means to quantitatively compare the “desired” and the “known” coupler curves. This paper addresses the issues involved in quantitative comparison of two arbitrary curves using parameterization and shape evaluation. A design example of automated selection of mechanism designs is also presented.
    keyword(s): Design ,
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      Automatic Selection of Mechanism Designs from a Three-Dimensional Design Map

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    http://yetl.yabesh.ir/yetl1/handle/yetl/110598
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    contributor authorS. Kota
    date accessioned2017-05-08T23:39:04Z
    date available2017-05-08T23:39:04Z
    date copyrightSeptember, 1992
    date issued1992
    identifier issn1050-0472
    identifier otherJMDEDB-27599#359_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/110598
    description abstractOften a simple (four-bar linkage) mechanism to trace a desired path is sought. Dimensions of linkages to trace a specified coupler curve exactly are difficult to determine. Precision point techniques do not guarantee that the desired path will be generated. The methodology presented in this paper is based on indirect synthesis approach to select four-bar linkages that trace a given desired path. A practical, computer-aided three-dimensional design chart for the selection of four-bar linkage candidate designs that trace symmetrical paths is presented. It is based on hypothesis that any arbitrary path can be approximated by a symmetrical path at least for the purpose of choosing an initial design. Four-bar linkages that generate symmetrical paths are easier to design and exhibit a definite pattern of changes in their shape as the linkage parameters are varied. General design categories and the corresponding solution subspaces in the 3-D design map are identified to aid in the selection of candidate designs. The automation of the design-selection process requires a satisfactory means to quantitatively compare the “desired” and the “known” coupler curves. This paper addresses the issues involved in quantitative comparison of two arbitrary curves using parameterization and shape evaluation. A design example of automated selection of mechanism designs is also presented.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAutomatic Selection of Mechanism Designs from a Three-Dimensional Design Map
    typeJournal Paper
    journal volume114
    journal issue3
    journal titleJournal of Mechanical Design
    identifier doi10.1115/1.2926561
    journal fristpage359
    journal lastpage367
    identifier eissn1528-9001
    keywordsDesign
    treeJournal of Mechanical Design:;1992:;volume( 114 ):;issue: 003
    contenttypeFulltext
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