Title:
ULTRASONIC ROTARY ENCODER APPLICABLE TO MICRO SHAFT ROTATION MEASUREMENT
Document Type and Number:
WIPO Patent Application WO/2021/253578
Kind Code:
A1
Abstract:
An ultrasonic rotary encoder applicable to micro shaft rotation measurement, the encoder comprising: a sensor part (1), a rotation and transmission part (2) and a signal processing part (3), wherein the sensor part (1) comprises a stator (10), the cross-section of which is circular and which is of a straight pipe shape; a rotor (11); an ultrasonic sensor (12), which is fixedly arranged at the end portion of the rotor (11) that extends into the stator (10); and a plurality of grid bars (13), which are uniformly distributed in the circumferential direction of the stator (10). The rotor (11) is a tested shaft or the rotor (11) is coaxially and fixedly connected to a tested shaft; echo signals formed by the grid bars (13) and a side wall of the stator (10) are different in strength; and the ultrasonic sensor (12) is located in an ultrasonic echo detection area formed by the plurality of grid bars (13). The ultrasonic sensor (12) rotates in the ultrasonic echo detection area and forms echo signals with different strengths to be fed back to the signal processing part (3) for analysis and processing, so as to obtain a testing result. In addition, even if the outer diameter of the tested shaft is 1 mm or less, accurate testing can still be implemented.
Inventors:
HAN ZHILE (CN)
JIAN XIAOHUA (CN)
JIAN XIAOHUA (CN)
Application Number:
PCT/CN2020/105043
Publication Date:
December 23, 2021
Filing Date:
July 28, 2020
Export Citation:
Assignee:
SUZHOU XISHENG TECH CO LTD (CN)
International Classes:
G01B17/00; G01D5/00; G01P3/00
Foreign References:
| US20160164383A1 | 2016-06-09 | |||
| CN1624427A | 2005-06-08 | |||
| CN108627183A | 2018-10-09 | |||
| CN102998478A | 2013-03-27 | |||
| CN101266155A | 2008-09-17 | |||
| JPH08254439A | 1996-10-01 |
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD (CN)
Download PDF: