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實(shí)現(xiàn)連架桿給定角位移的機(jī)構(gòu)綜合方
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Method for Planar Four-bar Linkages Given Angle Displacements of Rotating Links
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    摘要:

    對(duì)于給定的兩連架桿4組對(duì)應(yīng)角位移,，可綜合得到無窮多個(gè)機(jī)構(gòu)解,，要求設(shè)計(jì)者快速、準(zhǔn)確地從中選取位置點(diǎn),、綜合出滿足各項(xiàng)設(shè)計(jì)要求的最優(yōu)機(jī)構(gòu)比較困難。為此,，根據(jù)映射理論,，提出把無限的布氏曲線所形成的無窮多機(jī)構(gòu)解表示在有限的區(qū)間內(nèi)，進(jìn)而通過機(jī)構(gòu)解分析得到感興趣的所有機(jī)構(gòu)屬性直觀圖,，包括機(jī)構(gòu)的類型分布,、缺陷分布、最小傳動(dòng)角和桿長比等,。同時(shí),，為避免位置點(diǎn)及機(jī)構(gòu)選取的盲目性，可考慮施加約束條件構(gòu)成可行機(jī)構(gòu)解區(qū)間,，在此區(qū)間上繪制機(jī)構(gòu)性能分析圖,，并確定滿足實(shí)際工程需要的最優(yōu)機(jī)構(gòu)解。

    Abstract:

    An infinite number of linkages can be produced for given four angle-displacements of rotating links. It is difficult for designers to synthesize the best linkage through rapidly and precisely selecting curve points that ensure to satisfy every design condition. To solve this problem, based on mapping theory, an infinite number of mechanism solutions generated by Burmester curves were expressed as finite solution ranges. Through solution analysis, the mechanism property graphs of interest have been computed, including their types, defects, minimum transmission angles, link-length ratios, and so on. After design constraints were considered and imposed, feasible solution ranges could be calculated. To avoid aimlessness in choosing positions and mechanisms, property analysis graphs on the feasible solution ranges were displayed, along with which the optimized solution which satisfies practical design conditions can be synthesized.

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錢衛(wèi)香,韓建友.實(shí)現(xiàn)連架桿給定角位移的機(jī)構(gòu)綜合方[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(5):222-226. Method for Planar Four-bar Linkages Given Angle Displacements of Rotating Links[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(5):222-226.

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