Analysis on the Instantaneous Stiffness of the 3-RPS Parallel Machine

Abstract:

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Based on the screw theory, the force analysis of the 3-RPS parallel machine is illuminated. Been equivalent to a 6-chain parallel machine, the deformation harmony equation of the parallel machine under the outside generalized force is interpreted. The instantaneous stiffness model of the parallel machine, which includes the change of the force Jacobian matrix, is established. Considering the deviation of the position and orientation of the moving platform, which is resulted from the distortion of the PRS chains of the parallel machine, the influence of the change of the Jacobian matrix to the instantaneous stiffness model of the 3-RPS parallel machine is analyzed, and furthermore, it is verified with an instance.

Info:

Periodical:

Key Engineering Materials (Volumes 407-408)

Edited by:

Fan Rui, Qiao Lihong, Chen Huawei, Ochi Akio, Usuki Hiroshi and Sekiya Katsuhiko

Pages:

63-67

DOI:

10.4028/www.scientific.net/KEM.407-408.63

Citation:

X. G. Han et al., "Analysis on the Instantaneous Stiffness of the 3-RPS Parallel Machine", Key Engineering Materials, Vols. 407-408, pp. 63-67, 2009

Online since:

February 2009

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Price:

$35.00

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