Study and Test of a Double-rotor Ultrasonic Motor with Symmetrical Longitudinal-torsional Converter
To obtain large torque, ultrasonic motors using longitudinal–torsional converters with diagonal slits are proposed. The converters have rather simple and tough structures and are driven by simply exciting the longitudinal vibration of the transducer. Stemming from the merits of such type ultrasonic motors, this paper proposes a double-rotor ultrasonic motor with a symmetrical longitudinal-torsional converter. The ultrasonic motor consists of four PZT-4 annular plates that vibrate longitudinally, two sonotrodes screw bonded atop the two end surfaces of the PZT plate stack, and two rotors pre-pressed against to the output surfaces of the sonotrodes by coil springs. To form identical directions of the output elliptical trajectory motions of the driving points, diagonal slits were symmetrically cut in the sonotrodes. To validate the proposed idea, principle description, FEM simulation, fabrication, and performance measurement of and prototype motor are presented in this paper. The tested performance of the
ultrasonic motor longitudinal–torsional converter converter with diagonal slits
Mingwei Sheng Weishan Chen Junkao Liu Shengjun Shi
State Key Laboratory of Robotics and System,Harbin Institute of Technology,92 West Da-Zhi Street Harbin,150001,China
国际会议
西安
英文
350-353
2009-08-23（万方平台首次上网日期，不代表论文的发表时间）