Design and simulation of an ultrasonic linear motor with dual piezoelectric actuators

In this study, an ultrasonic linear motor with dual piezoelectric (PZT) actuators is developed. A traveling wave motion is generated on the stator by a double-sided excitation of the stator of the ultrasonic linear motor, which drives the slider that is connected to the stator. The development and design processes are described. In this paper, the principle of using an ultrasonic motor to drive a traveling wave type is presented. The structure for the ultrasonic linear motor is then demonstrated with its dimensions, driving conditions and material parameters, so that Computer-Aided Engineering (CAE) can be used to simulate the driving performance. The simulation results show the differences to the characteristics that are achieved by adjusting the critical parameters, such as the PZT boned positions, the excitation frequency and the preload, in order to derive the best design. A prototype that uses the best parameter design is presented, and a method to improve development processes is presented in the final section.

     

基于虚拟现实技术的车床仿真系统

基于开发CA6132型车床虚拟教学软件的目的,采用了虚拟仿真的方法,开发了带有虚拟现实特征的车床教学系统软件.提出了虚拟车床开发的一般流程,阐述了矫正图像的立面分割技术,开发了基于Unity3D引擎软件的虚拟车床仿真系统,解释了虚拟现实的基本原理,建立了CA6132型车床的三维模型,提出了在Unity3D下车床加工的仿真方法,开发了基于虚拟现实设备zSpace虚拟现实车床仿真系统,提出了虚拟现实的场景交互方式,降低了实际车床操作的危险.