| 发明名称 |
Non-magnetic high-speed piezoelectric rotary motor |
| 摘要 |
A piezoelectric motor including a rotor and a piezoelectric actuator positioned relative to the rotor in such manner that a working end of the actuator is in linear, frictional, resilient and forced contact with a working surface of the rotor. The actuator includes a piezoelectric a longitudinal prism shaped resonator with a trapezoidal cross-section and the working end of the actuator is a flat pusher insert set at an angle to the plane of the resonator base. An electronic generator is connected to electrodes of the piezoelectric actuator to excite periodic mechanical oscillations in the actuator wherein the electrodes are applied onto the longitudinal lateral trapezoidal surfaces of the resonator and the piezoelectric resonator is polarized across its width and the electronic generator outputs an alternating electrical voltage signal at a frequency matching the frequency of the first-order natural longitudinal mode of mechanical oscillation along the length of the resonator. |
| 申请公布号 |
US9136778(B2) |
申请公布日期 |
2015.09.15 |
| 申请号 |
US201313778330 |
申请日期 |
2013.02.27 |
| 申请人 |
|
发明人 |
Petrenko Serhiy;Zhelyaskov Valentin R. |
| 分类号 |
H02N2/12;H02N2/16;H01L41/09;H02N2/00;H02N2/10 |
主分类号 |
H02N2/12 |
| 代理机构 |
Fox Rothschild LLP |
代理人 |
Sacco, Esq. Robert J.;Fox Rothschild LLP |
| 主权项 |
1. A piezoelectric motor comprising:
a rotor with an outer working cylindrical surface set for rotation relative to a motor base; a piezoelectric actuator positioned relative to the rotor in such manner that a working end of the actuator is in linear, frictional, resilient and forced contact with the working surface of the rotor, the piezoelectric actuator including a piezoelectric resonator made in the shape of a longitudinal prism with a trapezoidal cross-section having longitudinal lateral surfaces and a base surface and the working end of the actuator is a flat pusher insert set at an angle to the plane of the resonator base; and an electronic generator connected to electrodes of the piezoelectric actuator to excite periodic mechanical oscillations in the actuator; wherein the electrodes are applied onto the longitudinal lateral trapezoidal surfaces of the resonator and the piezoelectric resonator is polarized across its width, parallel to the resonator base, and the electronic generator outputs an alternating electrical voltage signal at a frequency matching the frequency of the first-order natural longitudinal mode of mechanical oscillation along the length of the resonator. |
| 地址 |
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