2015•International Journal of Advanced Robotic SystemsOpen access

Rigid Dynamic Model and Analysis of 5-DOF Parallel Mechanism

Xiulong Chen, Xiaoxia Liang, Yu Deng, Qing Wang

Abstract

This paper introduces a novel 4-UPS-RPS spatial parallel mechanism, which can achieve three rotation degrees and two translation degrees of freedom. A rigid dynamic model is established and analysis of the parallel mechanism is carried out. The kinematics of the RPS and UPS driving limbs are analysed and the velocity-mapping relationships between the driving limbs and the other parts are built. The load conditions of the parts are analysed, and the rigid dynamic model of the 4-UPS-RPS parallel mechanism is derived by the virtual work principle approach. Using the example of the parallel mechanism movement, a driving forces analysis of the 4-UPS-RPS parallel mechanism is carried out, and the correctness of the rigid dynamic model is verified by numerical calculation and virtual simulation.

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Key concepts: Mechanism (biology), Computer science, Kinematics, Screw theory, Correctness, Translation (biology), Parallel manipulator, Rotation (mathematics)