Design and Simulation of a Novel Impact Piezoelectric Linear-Rotary Motor

Authors：Han Liling; Zhao Yahui; Pan Chengliang; Yu Liandong^*

Source：7th International Symposium on Precision Mechanical Measurements (ISPMM), China, 2015-08-08 To 2015-08-12.

DOI：10.1117/12.2214125

• piezoelectric tube
• linear-rotary
• impact motor
• kinematics simulation

This paper presents a novel impact piezoelectric linear-rotary motor which is driven by a single piezoceramic tube with two parts of electrodes. From the inner and outer electrodes, longitudinal displacement of the tube is generated and used to actuate the shaft with linear motion ability. From the grooved helical interdigitated electrodes, torsional displacement is generated and used to actuate the shaft with rotary motion ability. Working principle and structural design of the motor are introduced and quasi-static longitudinal and torsional displacements of the tube are estimated. With established kinematics model of the motor, the working behaviors of the motor are investigated numerically with MATLAB/Simulink software. The stepping characteristics of the linear and rotary motions are analyzed, compared, and discussed. With optimized material selection, structural design, and driving parameters, the proposed linear-rotary motor will provide remarkable performances as a miniaturized multi-degree driving device for complex positioning and manipulation applications.

• Institution
  合肥工业大学