Design and Characteristics of Mode-Coupling LiNbO3 Ultrasonic Motor Depended on Width-to-Length Ratio of the Stator Vibrator
スポンサーリンク
概要
- 論文の詳細を見る
A miniature ultrasonic motor fabricated from a LiNbO3 rectangular plate was studied to improve its rotation characteristics. In this motor, the coupling modes of in-plane longitudinal and flexural modes caused by crystal anisotropy are used to realize a single-phase drive motor. The mode coupling vibrator is designed to have crystal cut angles and the width-to-length ratio $W/L$ of the vibrator shape. In this study, we noted the new coupling condition of $W/L\approx 0.84$ compared with the conventional ratio of $W/L=0.255$. We considered the mechanism of the mode coupling and the design of the stator vibrator by finite element method analysis and experiments. From the results, we fabricated and investigated prototype motors of the vibrator with dimensions of $10\times 2.55\times 0.5$ and $4.10\times 3.48\times 0.5$ mm3. The newly designed motor with the vibrator of $W/L=0.849$ improved the motor characteristics for the equalization of rotation in both directions.
- 2010-07-25
著者
-
TAKANO Takehiro
Information and Communication Engineering, Tohoku Institute of Technology
-
Hirose Seiji
Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
-
Yamayoshi Yasuhiro
Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
-
Tamura Hideki
Information and Communication Engineering, Tohoku Institute of Technology, Sendai 982-8577, Japan
-
Aoyagi Manabu
Muroran Inst. of Tech.
-
Morooka Takanori
Graduate School of Science and Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
関連論文
- P2-32 Load Characteristics of a Diagonally Symmetric Form Ultrasonic Motor Using a LiNbO_3 Plate(Poster session 2)
- Triaxial Quartz Gyrosensor Using a Threefold Rotatory Symmetric Form Vibrator
- Software-Controlled Measurement System for Large Vibrational Amplitude Piezoelectric Resonator Using Continuous Driving Method with Numerical Equivalent Model
- Novel Transfer Method Using Near-Field Acoustic Levitation and Its Application
- Design and Characteristics of Mode-Coupling LiNbO3 Ultrasonic Motor Depended on Width-to-Length Ratio of the Stator Vibrator
- Single Phase Drive Ultrasonic Motor Using LiNbO3 Rectangular Vibrator
- Diagonally Symmetric Form Ultrasonic Motor Using LiNbO3 Plate
- High-Power Piezoelectric Characteristics of C-Axis Crystal-Oriented (Sr,Ca)NaNbO Ceramics (Special Issue : Ferroelectric Materials and Their Applications)
- Measurement of LiNbO3 Rectangular Plate Under Large Vibration Velocity of the First Longitudinal and Second Flexural Modes
- Triaxial Quartz Gyrosensor Using a Threefold Rotatory Symmetric Form Vibrator
- Single-Phase Drive Ultrasonic Linear Motor Using a Linked Twin Square Plate Vibrator