Double-Mode Miniature Cantilever-Type Ultrasonic Motor Using Lead-Free Array-Type Multilayer Piezoelectric Ceramics
Double-Mode Miniature Cantilever-Type Ultrasonic Motor Using Lead-Free Array-Type Multilayer Piezoelectric Ceramics
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采用无铅阵列式多层压电陶瓷的双模微型悬臂式超声波电机
DOI：
10.1143/jjap.47.4242
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发表时间：
2008
影响因子：
1.5
通讯作者：
S. Hirose
中科院分区：
文献类型：
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作者：
Y. Doshida;Sumiaki Kishimoto;Taisei Irieda;H. Tamura;Y. Tomikawa;S. Hirose
为了改善无铅超声波微电机的特性，我们进行了以下研究。采用无铅压电材料(Sr,Ca)2NaNb5O15 (SCNN)阵列型多层压电陶瓷(A-MLPC)制作了双模微型悬臂梁式超声波电机，并研究了其电驱动特性。 A-MLPC 集成了以 2 ×2 矩阵排列的多层压电陶瓷 (MLPC)。利用A-MLPC，可以轻松实现定子振子的双模态弯曲振动，提高了振子的品质因数。此外，随着SCNN压电性能的提高，振动器的机电耦合系数也随之增加。结果，我们成功地提高了电机的驱动性能。特别是，SCNN电机的驱动电压降低至之前研究的1/10，并且该电机在性能方面与Pb(Zr,Ti)O3–Pb(Ni,Nb)O3–Pb(Zn,Nb)O3 (PZT)电机相似，所施加的电压是PZT电机所需电压的3倍。 SCNN 电机以 0.3 Vp-p 开始旋转，并在 1.6 Vp-p 时表现出转速为 730 rpm、扭矩为 0.7 µN·m、效率为 3.5% 等特性。看来，SCNN 电机能够通过移动设备中使用的锂离子电池旋转，而无需放大器电路。
We studied the following to improve the characteristics of the lead-free ultrasonic micromotor. A double-mode miniature cantilever-type ultrasonic motor was fabricated using array-type multilayer piezoelectric ceramics (A-MLPC) of (Sr,Ca)2NaNb5O15 (SCNN) such as lead-free piezoelectric materials, and the electrical driving properties were investigated. The A-MLPC integrated multilayer piezoelectric ceramics (MLPC) arrayed in a 2 ×2 matrix. By using A-MLPC, double-mode bending vibration of the stator vibrator can be realized easily, and the quality factor of the vibrator increased. Furthermore, with the improvement of the piezoelectric properties of the SCNN, the electromechanical coupling coefficient of the vibrator increased. As a result, we succeeded in improving the driving properties of the motor. In particular, the driving voltage of SCNN motor decreased to 1/10 of the previous study, and this motor is similar to Pb(Zr,Ti)O3–Pb(Ni,Nb)O3–Pb(Zn,Nb)O3 (PZT) one in terms of properties by applying 3 times higher voltage than that required for the PZT one. The SCNN motor started to rotate at 0.3 Vp–p and showed such characteristics as revolution speed of 730 rpm, torque of 0.7 µN m, and efficiency of 3.5% at 1.6 Vp–p. It appeared that the SCNN motor was able to rotate by a lithium-ion cell used in the mobile equipment without an amplifier circuit.
高磁场法制备晶体取向La取代Sr_2NaNb_5O_<15>陶瓷
DOI：
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发表时间：
2006
期刊：
J. J. Appl. Phys 45,9B
影响因子：
--
作者：
Y.Doshida;H.Kishi;A.Makiya;S.Tanaka;K.Uematsu;T.Kimura
通讯作者：
T.Kimura