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空间六杆回路
相关语句
  spatial six-link loops
     OVERCONSTRAINT ANALYSIS OF SPATIAL SIX-LINK LOOPS
     空间六杆回路的过约束分析
  相似匹配句对
     OVERCONSTRAINT ANALYSIS OF SPATIAL SIX-LINK LOOPS
     空间回路的过约束分析
     OVERCONSTRAINT ANALYSIS OF SPATIAL SIX-LINK LOOPS
     空间6回路的过约束分析
短句来源
     A Space Mechanism with 6-DOF and Multiple-Parallel Links
     多并联式自由度空间机构
短句来源
     SPACE
     空间
短句来源
     Optimum Synthesis of Spatial Five--Link and Six--Link Mechanisms
     空间机构、机构最优综合
短句来源
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>=Three basic problems in the study of overconstrained mechanisms are: presentation of existence conditions (i.e., the overconstrained condition and the closure condition), determination of overconstraint and derivation of the input-output (I-O) equations. The existence conditions of many known overconstrained mechanisms are not perfect, which prevent them from being applied practically. On the other hand, it is very difficult to analyze six-link overconstrained mechanisms completely by using known analytical...

>=Three basic problems in the study of overconstrained mechanisms are: presentation of existence conditions (i.e., the overconstrained condition and the closure condition), determination of overconstraint and derivation of the input-output (I-O) equations. The existence conditions of many known overconstrained mechanisms are not perfect, which prevent them from being applied practically. On the other hand, it is very difficult to analyze six-link overconstrained mechanisms completely by using known analytical methods, due to the complexity of the kinematic analysis for this kind of mechanisms. In this paper, we present a complete analytical method to study six-link overconstrained mechanisms by using only four basic equations combined turning technique. Meanwhile, closure conditions can be obtained and I-O equations can be further educed. By using this method, we can derive the closure condition and I-O equations of the Bricard trihedral mechanism expediently. Also, the closure condition and I-O equations of a known 4R2P overconstrained mechanism are deduced for the first time.

机构的过约束分析包括过约束存在条件(过约束条件和封闭条件)的给出、过约束性的判定和输入输出关系的导出三部分。在已发现的过约束机构中有相当一部分的存在条件不够完善,因而不利于这些机构的实际应用。由于空间六杆回路运动分析的复杂性,现有方法很难对其进行完整的解析分析。本文提出一种研究空间六杆回路过约束问题的完全解析法,只用四个基本方程并结合轮换就可判定回路的过约束性,同时可得到封闭条件,进而导出输入输出关系。用该法可方便导出Bricard三面体机构的封闭条件及输入输出关系,并对一个已知的4R2P过约束机构,首次给出了其封闭条件及输入输出方程的解析式。

 
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