Bidirectionally rotational ultrasonic motor with multiple groups of piezoelectric rings
Title：
Bidirectionally rotational ultrasonic motor with multiple groups of piezoelectric rings
Application Number：
 01144190
Application Date：
 2001/12/14
Announcement Date：
 2002/06/26
Pub. Date：
 2004/03/10
Publication Number：
 1355599
Announcement Number：
 1141782
Grant Date：
Granted Pub. Date：
 2004-3-10
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H02N 2/10
Applicant(s)：
 Qinghua Univ
Inventor(s)：
 Zhu Xiangcheng, Li Longtu, Gui Zhilun
Key Words：
 Bidirectionally rotational, ultrasonic motor, multiple groups, piezoelectric rings
Abstract：
 An ultrasonic motor is composed of a stator consisting of piezoelectric ceramic ring and metal ring with multiple groups of array teeth arranged on its circumference at intervals, a rotor consisting of the friction ring closely contacted with the said drive teeth and metal ring, central shaft, prefastening regulator consisting of regulating screw and elastic regulator, base and casing. Its advantages include simple polarizing process for ceramic, simple drive mode, high output torque and rotation stability, and long service life.
Claim：
Priority：
PCT：
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