Title :
Miniaturization of the traveling wave ultrasonic linear motor using bimorph transducers
Author :
Kondo, Shuichi ; Koyama, Daisuke ; Nakamura, Kentaro
Author_Institution :
Precision & Intell. Lab., Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
Small-sized ultrasonic linear motors are demanded for replacing pneumatic actuators. We propose a new structure of traveling wave ultrasonic linear motor less than 10 mm in diameter using bimorph transducers. The length of the transducer is determined to be 17 mm being based on finite element analysis for the resonance frequency of 90 kHz. A traveling wave of bending vibration is excited along the transmission bar with the electrical termination at one of the transducers. The maximum speed of 154 mm/s and the maximum thrust of 0.4 N were obtained.
Keywords :
electric actuators; finite element analysis; linear motors; ultrasonic motors; ultrasonic transducers; bending vibration; bimorph transducers; electrical termination; finite element analysis; frequency 90 kHz; pneumatic actuators; resonance frequency; size 17 mm; small-sized ultrasonic linear motors; transmission bar; traveling wave ultrasonic linear motor miniaturization; Acoustics; Friction; Immune system; Resonant frequency; Transducers; Ultrasonic variables measurement; Vibrations; bimorph transducer; linear actuators; traveling wave; ultrasonic motors;
Conference_Titel :
Ultrasonics Symposium (IUS), 2010 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4577-0382-9
DOI :
10.1109/ULTSYM.2010.5936011
