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Displacement Amplification Analysis for Parallel Four-Bar Mechanism

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Abstract:

The displacement amplification and hysteresis of parallel four-bar mechanism using piezo actuator were researched in this paper. The displacement amplification was analyzed by employing the material bending theory firstly. Theoretical and FEM analysis proved that the amplification ratio of parallel four-bar mechanism is only related to the position of driving point and the guiding arm displacement is directly proportional to the input with the certain structure. Then the Preisach model was employed to model the hysteresis of guiding arm and using the model to perform the research on the output displacement of the mechanism. Experiments proved that the analysis is correct and showed that this model can effectively improve the accurate of the guiding arm output displacement and can realize output arbitrary series displacement using the Preisach interpolation surface.

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Periodical:

Applied Mechanics and Materials (Volume 160)

Pages:

229-233

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.160.229

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Cite this paper

Online since:

March 2012

Authors:

Xue Feng Yang, Wei Li, Yu Fei Liu

Keywords:

Amplification Mechanism, Parallel Four-Bar Mechanism, Piezo Actuator

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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