Universal hollow-structure great-moment ring piezoelectric ultrasonic motor |
Title： |
| Universal hollow-structure great-moment ring piezoelectric ultrasonic motor |
|
Application Number： |
02125283 |
Application Date： |
2002/07/31 |
Announcement Date： |
2003/01/08 |
Pub. Date： |
|
Publication Number： |
1389973 |
Announcement Number： |
1207839 |
Grant Date： |
2005-6-22 |
Granted Pub. Date： |
2005-6-22 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H02N 2/10, H02N 2/12 |
Applicant(s)： |
Tsingha Univ. |
Inventor(s)： |
Chu Xiangcheng, Yan Songmei, Yan Renbo |
Key Words： |
Universal, hollow-structure, great-moment, ring, piezoelectric ultrasonic motor |
Abstract： |
The general annular piezoelectricity ultrasonic motor of large moment with hollow structure features in that the stator comprises the metal ring with driving teeth and the annular piezoelectric ceramic pieces. The rotator comprises metal pieces matching the driving teeth, the spring and rubber gasket. The base comprises the ball bearing for positioning the hollow central shaft. The piezoelectric ceramic pieces are polarized along the thickness with inversion once per 1/2 wavelength. The difference of 1/4 or 3/4 wavelength is existed between the two groups of the polarized sections, which are connected to the two AC signals. The invented motor possesses the versatility, provides the maximum output torque larger than 5K gfcm, and rotate speed less than 120r/min. |
Claim： |
|
Priority： |
|
PCT： |
|
LegalStatus： |
|
Relevancy information
