Development of Ultrasonic Linear Motor for Use in Bedsore Prevention Bed

在这项研究中，我们开发了一种超声波直线电机，它包含两个锐角换能器。我们专注于开发用于褥疮预防床的致动器。第一个制造的电机有一个流动，电机的驱动频率与换能器的谐振频率不同步。此外，结构的刚度较低。因此，电动机并没有产生很大的功率。通过解决这些问题，获得了最大推力40 N和空载速度267 mm/s。

In this study, we have developed an ultrasonic linear motor that incorporates two transducers at an acute angle. We focus on developing actuators for use in a bedsore prevention bed. The first fabricated motor had a flow in that the driving frequency of the motor was not synchronous with the resonant frequency of the transducers. Furthermore, the rigidity of the structure was low. Therefore, the motor did not generate large power. By solving these problems, a maximum thrust of 40 N and a no-load speed of 267 mm/s were obtained.