Title:
ROTOR DYNAMIC BALANCE MEASUREMENT METHOD BASED ON HIGH-PRECISION CLOCK SAMPLING
Document Type and Number:
WIPO Patent Application WO/2024/061386
Kind Code:
A1
Abstract:
A rotor dynamic balance measurement method based on high-precision clock sampling, belonging to the technical field of rotor dynamic balance measurement by using a rotation speed sensor and a vibration sensor. The technical solution comprises: respectively measuring the rotation speed and vibration of a rotor by using a rotation speed sensor and a vibration sensor, and generating a rotation speed pulse signal and a vibration signal; a computer controlling a clock sampling signal and the rotation speed pulse signal to have relationships of having the same nominal frequency value and having a small frequency difference; forming a sampling gate of the vibration signal by using a high-resolution stable gradient phase difference between the two signals, and thereby overcoming a counting error of ±1 pulses; and performing sampling on the vibration signal by using the clock sampling signal and by means of an analog-to-digital converter, such that phase change information and amplitude change information are completely sampled within a sampling period of the vibration signal. The method may involve a wide range between tens of hertz to several kilohertz of dynamic balance measurement, and can perform high-precision dynamic balance measurement on a changed vibration signal.
Inventors:
JIA ZHAOMIN (CN)
MA ZHUANG (CN)
GONG CHENG (CN)
XUE YALI (CN)
MA ZHUANG (CN)
GONG CHENG (CN)
XUE YALI (CN)
Application Number:
PCT/CN2023/140698
Publication Date:
March 28, 2024
Filing Date:
December 21, 2023
Export Citation:
Assignee:
UNIV TANGSHAN (CN)
International Classes:
G01M1/16
Foreign References:
| CN116929635A | 2023-10-24 | |||
| CN115166346A | 2022-10-11 | |||
| CN112729441A | 2021-04-30 | |||
| CN113791268A | 2021-12-14 | |||
| CN114563131A | 2022-05-31 | |||
| CN115932390A | 2023-04-07 | |||
| CN116299566A | 2023-06-23 | |||
| JPS63138230A | 1988-06-10 |
Other References:
SHUI-JUN XV, JIANG ZHI-NONG: "Study on full period re-sampling technology for vibration signal on rotating machinery", JOURNAL OF MECHANICAL & ELECTRICAL ENGINEERING, vol. 28, no. 2, 20 February 2011 (2011-02-20), pages 153 - 156, 161, XP093149950
Attorney, Agent or Firm:
BEIJING FINELAND IP FIRM (CN)
Download PDF: