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A mechanism with multiple topological structures during the operation process is called a mechanism with variable topologies (MVT) or is called a variable chain. The kinematic joints whose types and/or motion orientations are changeable during the operation process of an MVT are called the variable joints. According to the fundamental concepts, simplified unified graph, coordinate sequence, and mobility...
A mechanism which encounters a certain changes in its topological structure during operation is called a mechanism with variable topologies. This paper is devoted to introducing a set of approaches for the structural analysis and configuration synthesis of mechanisms with variable topologies. The variable kinematic chains and variable kinematic joints are described first. Then, the representation...
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