Abstract
This paper presents an original linear piezoelectric motor for applications in space and robotics. The originality of this motor consists in the combination of longitudinal and shear modes of vibration of the stator. These two modes are mixed to produce an elliptical vibration of the surface of the stator in contact with a slider. The motion of the linear slider is obtained through friction forces that develop at the interface between the stator and the slider. This motor is being developed for applications in active truss members of variable geometry structures, such as those used in space. Currently, these structures employ stepper motors. It is expected that replacing these electromagnetic devices with ultrasonic motors will offer the following advantages: position-locking without power supply, compactness, nonmagnetic operation, and lower power consumption. This paper details the design of this motor and emphasizes the novel concept that was developed to combine the longitudinal and shear modes of vibration.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 71-78 |
| Number of pages | 8 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 604 |
| State | Published - Dec 11 2000 |
| Event | Materials for Smart Systems III - Boston, MA, USA Duration: Nov 30 1999 → Dec 2 1999 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering