| Summary: | 碩士 === 臺灣大學 === 機械工程學研究所 === 98 === This paper aim at developing a systematic and efficient method for topological synthesis of hybrid transmission mechanisms. The characteristics of hybrid transmission could be derived from the research including that two-DOF transmission must have two inputs, one ground and one output and these links should be coaxial. For the connection of two links, only input and ground links can be connected by the coaxial links. The features of fractionated and non-fractionated transmission are derived by the general characteristics of transmissions. For the fractionated transmission, it could be decomposed into two ground component (GC) and output component (OC). The rules that a GKC is GC and OC could be found out according to the restrictions of number of coaxial links and end vertices. By the connecting of coaxial link, the one-DOF morph mechanism could be derived and different number of morph mechanism can be identified by checking the isomorphic mechanism. For two-DOF non-fractionated transmission, the ground should be coaxial link. The features of coaxial links connecting would be found out and the morph mechanism which derived from the connecting of coaxial links should avoid the redundant links. However, there are no admissible GKCs inside the atlas of two-DOF GKC up to seven links. Hence, the admissible mechanisms are enumerated. For identifying the distinct morphed mechanism, the heavy-edged pathes are identical that will be regarded as one. The methodology presented is systematic, and can be easily applied to the enumertation of fractionated and non-fractionated transmission with distinct morphed mechanisms.
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