新型惯性式压电旋转驱动器

提出通过机械方式控制压电移动驱动器和支撑面之间摩擦力的有序变化,形成有规律运动的新型惯性式压电旋转驱动器的研究方案。设计了旋转驱动器的结构模型,分析了驱动器的受力和运动原理,制作了旋转驱动器样机,并作了相关的性能测试,得到了旋转驱动器的旋转步长,转速随驱动电信号频率、幅值变化的关系曲线。试验结果表明,研制的旋转驱动器能实现大行程(360°)、高分辨率(15μrad)、高转速(0.26 rad/s),且运动性能稳定。该旋转驱动器在精密运动、微操作、光学工程、精密定位等精密工程中有广阔的应用前景。

Novel inertial piezoelectric rotary actuator

A novel concept of the inertial piezoelectric rotary actuator was proposed based on the principle that by means of controlling mechanically the orderly change of the friction force between the piezoelectric moving mechanism and the supporting face to move regularly the mechanism.A structure model of the actuator was designed,the forces acting on the mechanism and its moving principle were analyzed,and a prototype of the actuator was made.The performance of the actuator was tested,and the relationship of its rotary step and speed versus the driving voltage and frequency were obtained.The experiment results show that the developed actuator is characterized by large travel(360°),good resolution(15 μrad),high speed(0.26 rad/s),and work stability.It can be applied in the field of micromanipulation and precision engineering,such as precision driving and positioning,optics engineering,etc.