• CN:11-2187/TH
  • ISSN:0577-6686

›› 2010, Vol. 46 ›› Issue (1): 169-174.

• 论文 • 上一篇    下一篇

新型压电旋转驱动器的设计与试验研究

刘向锋;刘大伟;高志;刘莹;丘天   

  1. 清华大学摩擦学国家重点实验室
  • 发布日期:2010-01-05

Design and Experimental Research of a New Type of Piezoelectric Rotary Actuator

LIU Xiangfeng;LIU Dawei;GAO Zhi;LIU Ying;QIU Tian   

  1. The State Key Laboratory of Tribology, Tsinghua University
  • Published:2010-01-05

摘要: 为简化压电旋转驱动器的结构,提高能量使用效率,设计和研制一种新型压电旋转驱动器。驱动器采用压电双晶片作为原动件,经运动转换机构将其弯曲变形转化为扭转运动,再通过双离合器的耦合传动将扭转运动转化为旋转运动。使用有限元仿真分析方法和试验对驱动器的物理性能进行深入的研究,测得驱动器的关键参数。针对该驱动器的有限元仿真分析和试验研究表明,压电旋转驱动器的转速与驱动信号的频率、电压近似呈线性关系,驱动器具有一定的承载能力。对试验结果与有限元仿真分析结果进行误差分析,找出产生误差的原因,为驱动器的进一步优化设计提供了参考。研究证明了该压电旋转驱动器设计方法的可行性,使用该方法可以制作出结构简单,体积小,适合在微驱动领域中应用的压电旋转驱动器。

关键词: 双离合器耦合, 旋转驱动器, 压电双晶片

Abstract: A new type of piezoelectric rotary actuator is designed and developed to simplify the structure and improve the energy efficiency. The actuator adopts the piezoelectric bimorph as the prime driver. With the movement transformer, the bending deflection is converted into torsion motion, then through the dual-clutch coupling transmission, the torsion is converted into rotation. The finite element simulation analysis method is used to carry out in-depth research of the physical property of actuator, and the key parameters of the actuator are measured. The research shows that the speed of the developed piezoelectric rotary actuator is in linear relation with the signal frequency and the voltage applied to the piezoelectric bimorph, and the actuator has certain load carrying capability. By comparing experiment data with the finite element simulation results, the error origins are analyzed and founded. This provides the reference for further optimization design of the actuator. The investigation proves the feasibility of the design method of piezoelectric bimorph rotary actuator. The developed actuator is simple in structure, small in volume. It is suitable for use in the micro drive field as the piezoelectric rotary actuator.

Key words: Dual-clutch coupling, Piezoelectric bimorph, Rotary actuator

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