一种可驱动两种类型转子的环型压电驱动器

Ring-Shaped Piezoelectric Driver Capable of Driving Two Types of Rotors

为了满足微电机的多向运动需求,研究了一种可双向运动的压电驱动器,并对其性能进行了设计和分析。该驱动器可以驱动直线型和圆筒型两种动子,适用于多种工作环境。首先阐述了压电驱动器的基本结构和原理,建立了驱动器模型,然后用有限元方法分析了压电驱动器的变形模式。经实验验证,压电驱动器的最佳工作频率为2.27 kHz,最佳驱动电压幅值为150 V。在该激励信号下,直线型压电驱动器的最大速度达到249 mm/s,最大负载能力为20 N。该压电驱动器能够实现双向运动和稳定输出。

In order to meet the multi-direction motion needs of micromotors,a piezoelectric actuator with bidirectional motion was studied,and its performance was analyzed.The actuator could drive both linear and cylindrical actuators,which makes this piezoelectric actuator suitable for multiple working environments.This paper first describes the basic structure and principle of a piezoelectric actuator.An actuator model was established,and the deformation mode of the piezoelectric actuator was analyzed using the finite element method.Experimental results showed that the optimal operating frequency of the piezoelectric actuator was 2.27 kHz,and the optimal driving voltage amplitude was 150 V.Under an excitation signal,the maximum speed of the linear piezoelectric driver reached 249 mm/s,and the maximum load capacity was 20 N.The piezoelectric actuator could realize bidirectional motion and stable output.