A Rotary Piezoelectric Motor Using Bending Vibrators
This study intends to present and verify a new idea for constructing rotary piezoelectric motor that utilizing multi bending vibrators to achieve high output power.The vibrator in the proposed motor contains two exponential shape horns located on the two leading ends,two groups of PZT elements are clamped between the two horns by a flange with double head bolt.Two second-order bending vibrations,which are orthogonal in space,are excited by two groups of PZT elements respectively and then superimpose in the vibrator to produce elliptical movements on the two driving tips.Six vibrators are fabricated and tested by a scanning laser Doppler vibrometer,four vibrators with closer resonance frequencies are selected to construct the rotary motor.The output abilities of motor with single vibrator,two vibrators and four vibrators are measured respectively,a maximum no-load speed of 298r/min and a maximum torque of 9.3Nm are achieved under four vibrator driving.It is easy for the proposed motor to change its mechanical output characteristics by changing the number of the vibrator and the diameter of the rotor,which states its practicability.
Piezoelectric motor rotary bending vibrator bolt-clamped
Liu Yingxiang Chen Weishan Yang Xiaohui Liu Junkao
State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China
国际会议
上海
英文
164-164
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）