Ultrasonic motors using shear-type piezoelectric ceramics

Author

Lu, Cun-yue ; Li, Jin-liang ; Pi, Wen-yuan

Author_Institution

Dept. of Instrum. Sci. & Eng., Shanghai Jiaotong Univ., Shanghai, China

fYear

2010

fDate

10-13 Dec. 2010

Firstpage

465

Lastpage

469

Abstract

The shear piezoelectric constant value for d₁₅ has a higher value compared with constant d₃₁ or d₃₃. Also, the value of the shear electromechanical coupling coefficient k₁₅ is bigger than that of k₃₁ or k₃₃. A design for an ultrasonic motor based on the shear coefficients has the potential for superior performance, relative to conventional d₃₁ and d₃₃ based ones. Thus, this paper presents ring type, tube type, disk type and rod type piezoelectric ceramic elements, which use the d₁₅ shear piezoelectric constant effect. The application methods and driving mechanism of the typical ultrasonic motors which use the shear piezoelectric ceramic elements are analyzed. The applications of shear piezoelectric ceramic elements accords with the requirements of the development trends of ultrasonic motors, such as large strain and miniaturization.

Keywords

piezoceramics; piezoelectricity; ultrasonic motors; disk type piezoelectric ceramic element; ring type piezoelectric ceramic element; rod type piezoelectric ceramic element; shear electromechanical coupling coefficient k15; shear-type piezoelectric ceramics constant; tube type piezoelectric ceramic element; ultrasonic motor; Acoustics; Ceramics; Electrodes; Electron tubes; Piezoelectric effect; Stators; Vibrations; Ultrasonic motor; bending vibration; piezoelectric ceramic; shear strain;

fLanguage

English

Publisher

ieee

Conference_Titel

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2010 Symposium on

Conference_Location

Xiamen

Print_ISBN

978-1-4244-9822-2

Type

conf

DOI

10.1109/SPAWDA.2010.5744357

Filename

5744357