Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/2718
Type: Journal article
Title: A study on the accuracy of kinematic modelling for a 3RRR compliant micro-motion stage with flexure hinges
Author: Yong, Y.
Lu, T.
Handley, D.
Hu, P.
Citation: Chinese Journal of Mechanical Engineering, 2004; 25(5):457-464
Publisher: China Machine Press
Issue Date: 2004
ISSN: 1000-9345
Abstract: This paper focuses on the kinematic modelling of a 3RRR micro-motion stage. This 3RRR micro-motion stage is a monolithic compliant mechanism and is designed using flexure hinges. This compliant micro-motion stage has a closed-loop parallel structure configuration. A kinematic model (analytical constant Jacobian matrix) of this stage was derived previously by the authors using the pseudo-rigid-body model and the loop-closure theory accordingly. The Jacobian matrix is used to generate a wor4kspace of the stage. This analytical workspace is much larger than a FEA (finite element analysis) workspace and an experimental workspace. This suggest that there is a loss of motion in the micro-motion stage not being modelled in the kinematic model. Therefore, FEA is carried out to investigate the rotational and the translational motions of flexure hinges. The FEA results are used to improve the accuracy of the analytical model. The improved model effectively predicts the workspace area of the stage.
Keywords: Kinematic model
compliant mechanisms
micro-motion stages
flexure hinges
Appears in Collections:Aurora harvest 6
Mechanical Engineering publications

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