Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
800148 | Mechanism and Machine Theory | 2007 | 13 Pages |
Abstract
This paper proposes a generalized transmission index for spatial mechanisms, based on the virtual coefficient between the transmission wrench screw and the output twist screw. This index is applicable to single-loop spatial linkages, with fixed output and single or multiple degrees of freedom. We show that the transmission index introduced by Sutherland and Roth, the pressure angle of higher-pair mechanisms and the transmission angle of linkages are special cases of our index. A method is developed to compute the transmission wrench screw in spatial single-loop linkages. Furthermore, the transmission quality is defined based on the generalized transmission index to evaluate the global performance of a mechanism.
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Authors
Chao Chen, Jorge Angeles,