This paper presents a new method to determine if two task positions used to design a four-bar linkage lie on separate assembly modes (circuits) of a coupler curve, known as an “assembly mode defect.” The proposed approach uses the image space of a kinematic mapping to provide a geometric environment for both the synthesis and analysis of four-bar linkages. The devised algorithm allows assembly mode decisions at an early design stage without resorting to the mechanism dimensions. The numerical effort is low compared to existing solutions.
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.Copyright © 2007
by American Society of Mechanical Engineers
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