Abstract
This paper presents a new standing wave type linear motor that can move bi-directionally with identical performance in both the forward and backward directions. The motor consists of a metallic stator and two piezoceramic plates bonded to the stator with the spatial phase difference of a half wavelength. With two electric driving signals either in-phase or out-of-phase for the two piezoceramic plates, the piezoceramic plates excite two ultrasonic standing waves with a certain phase difference. They generate a new standing wave when combined. The operation principle of the motor is verified through finite element analyses. For an experimental illustration of the theoretical and numerical results, a sample motor is fabricated and characterized following the numerical design. The experimental results confirm the validity and practical applicability of the new motor structure.
| Original language | English |
|---|---|
| Pages (from-to) | 345-352 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 4701 |
| DOIs | |
| State | Published - 2002 |
| Event | Smart Structures and Materials 2002: Smart Structures and Integrated Systems - San Diego, CA, United States Duration: 18 Mar 2002 → 21 Mar 2002 |
Keywords
- Bi-directional
- Piezoelectric ceramic
- Standing wave
- Ultrasonic motor