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Appl. Sci. 2018, 8(8), 1400; https://doi.org/10.3390/app8081400

Simulation of Motion Interactions of a 2-DOF Linear Piezoelectric Impact Drive Mechanism with a Single Friction Interface

School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei 230009, China
Haojie Xia and Liling Han contributed equally to this work.
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Received: 20 July 2018 / Revised: 16 August 2018 / Accepted: 16 August 2018 / Published: 19 August 2018
(This article belongs to the Special Issue Piezoelectric Actuators)
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Abstract

A two-degrees-of-freedom (2-DOF) linear piezoelectric impact drive mechanism (PIDM) is actuated by two independent piezoelectric actuators (PAs). The coupled motion interactions of a two orthogonal DOF linear PIDM with a single friction interface are introduced and analyzed. A complete dynamic model of the 2-DOF PIDM is established with the Karnopp friction model considering the distribution of friction in the x-axis and y-axis. The output displacements of the 2-DOF PIDM and two corresponding independent 1-DOF PIDMs are investigated numerically. When the two input exciting signals of a 2-DOF PIDM have the same driving voltage of 100 V with a duty ratio of 98% at 10 Hz and two 1-DOF PIDMs are driving under the same conditions, the step displacements in the two axes of 2-DOF PIDM are improved compared to the corresponding 1-DOF PIDM. When the two input exciting signals of a 2-DOF PIDM have the same driving voltages of 100 V with a duty ratio of 98% but the driving frequency is 10 Hz in the x-axis and 20 Hz in the y-axis, the results show that the displacement of high frequency achieves a slight decrease and displacement of low frequency shows a large increase compared to the two corresponding 1-DOF PIDMs. View Full-Text
Keywords: piezoelectric; coupled motion; simulation; motion interaction piezoelectric; coupled motion; simulation; motion interaction
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Xia, H.; Han, L.; Pan, C.; Jia, H.; Yu, L. Simulation of Motion Interactions of a 2-DOF Linear Piezoelectric Impact Drive Mechanism with a Single Friction Interface. Appl. Sci. 2018, 8, 1400.

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