变胞机构的结构学分析与综合及应用

发布时间：2018-01-05 07:40

本文关键词：变胞机构的结构学分析与综合及应用　出处：《北京邮电大学》2012年硕士论文　论文类型：学位论文

【摘要】：变胞机构是一种可高度展开、折叠的机构,具有构态变化和自动组合等特点,能在不同的状态下改变机构有效杆件的数目从而提供不同的自由度数,自动组合出新的机构,以适应不同功能的需要。变胞机构的结构学分析,即研究变胞机构的结构组成及拥有确定运动的条件。变胞机构的结构学综合,是变胞机构合并变胞的逆过程,即由终态结构综合出满足变胞要求的始态结构,从而通过结构综合发明新的变胞机构。复铰变胞机构的结构学分析综合问题一直是变胞机构结构学研究的难点问题。首先,对于单铰和复铰变胞机构的结构分析,本文以一种改进型双色拓扑图为基础,提出了提出一种新的邻接矩阵——改进型邻接矩阵来表示全部单铰和复铰变胞机构,并基于此改进型邻接矩阵,提出了基于改进型邻接矩阵的变胞机构拓扑结构变换分析算法,给出了运算规则与运算步骤,并通过实例验证了该算法的正确性。其次,对于包含全部单铰和复铰变胞机构的结构综合,提出了基于改进型邻接矩阵运算的变胞机构结构综合方法。通过四构件综合到五构件的变胞机构结构综合实例,验证了该方法对于复铰变胞机构结构综合的正确性和有效性。再次,变胞机构的同构判别是变胞机构综合研究中的重点内容,而复铰机构的同构判别更是机构同构判别领域的难点问题。本文将基于新提出来的改进型邻接矩阵,提出一种判别复铰机构同构的新方法。并通过综合出的复铰机构实例对此方法进行了验证。最后,基于变胞机构综合的结果,本文设计了两种具体变胞机构的应用实例。结果表明,所提出的改进型邻接矩阵算法可以进行复铰变胞机构的分析和综合,为变胞机构的理论完善和进一步应用奠定了一定基础。
[Abstract]:Metamorphic mechanism is a highly, folding mechanism, has the characteristics of configuration changes and automatic combination, the number in a different state changing mechanism of effective bars to provide different degrees of freedom, a new automatic combination mechanism, in order to meet the needs of different functions. The structure analysis of metamorphic mechanism the composition and structure have determined motion conditions of metamorphic mechanism. The structure of metamorphic mechanism comprehensive, is the inverse process of metamorphic mechanism with metamorphic, from the final state of structure to meet the requirements of the integrated metamorphic initial structure, thus forming a comprehensive new invention through the analysis of metamorphic mechanism. The comprehensive structure of multi joint metamorphic mechanisms, is a difficult problem in the structural study of metamorphic mechanism.
First, analysis of the structure of single joint and multi joint metamorphic mechanisms, in this paper, an improved double color topology as the foundation, puts forward a new adjacency matrix -- improved adjacency matrix to express all the single joint and multi joint metamorphic mechanisms, and based on the improved adjacency matrix is proposed. Topology analysis algorithm transform metamorphicmechanism improved based on adjacency matrix, operation rules and operation steps are given, and the correctness of this algorithm is verified by an example.
Secondly, the integrated structure of all single joint and multi joint metamorphic mechanisms including the proposed synthesis method of metamorphic mechanism structure of the improved adjacency matrix operation based on integrated into comprehensive examples of metamorphic mechanism structure of the five member by the four member, the validation of the method for multi joint metamorphic mechanisms is correct and effective structure comprehensive.
Again, the isomorphism of metamorphic mechanism is the key content of the comprehensive discriminant cellular mechanism, and complex isomorphic hinge mechanism is the institutional isomorphism discriminant discriminant difficulties. This paper will put forward a new improved adjacency matrix based on the proposed a new method of identifying complex hinge mechanism and verified isomorphic. Through the synthesis of the hinge example of this method.
Finally, the synthesis of metamorphic mechanism based on the designed two specific application examples of metamorphic mechanism. The results show that the improved adjacency matrix algorithm proposed for multi joint metamorphic mechanisms analysis and synthesis, which laid a foundation for the theory of metamorphic mechanism and further application.

【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH112

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