References
- Wang , G. Q. 2006 . Research on the several key problems of the traveling-wave type altrasonic motor . Zhejiang University , : 19 – 22 .
- Choi , M. S. 2008 . Application of Ag–ceramic composite electrodes to low firing piezoelectric multilayer ceramic actuators . Journal of Electroceramics , 20 : 225 – 229 .
- Caballero , A. C. 1997 . Ceramic–electrode interaction in PZT and PNN–PZT multilayer piezoelectric ceramics with AG/PD 70/30 inner electrode . Journal of Material Science , 32 : 3257 – 3262 .
- Kanda , T. 2006 . A micro ultrasonic motor using a micro-machined cylindrical bulk PZT transducer . Sensors and Actuators , 127 : 131 – 138 .
- Hu , M. Q. (2005) . “ Ultrasonic motor principles and design ” . Beijing : Science Press .
- Zhang , F. X. (2002) . “ Modern piezoelectricity ” . Beijing : Science Press .