On-Line Rotational Speed Measurement of Rolling Bearing Cage Based on Ultrasonic Measurement with Spectrum Refinement

doi:10.7652/xjtuxb202007017

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On-Line Rotational Speed Measurement of Rolling Bearing Cage Based on Ultrasonic Measurement with Spectrum Refinement

更新时间：2025-07-09

- On-Line Rotational Speed Measurement of Rolling Bearing Cage Based on Ultrasonic Measurement with Spectrum Refinement
- Vol. 54, Issue 7, Pages: 139-145(2020)
- 作者机构：
  
  1. 西安交通大学润滑理论及轴承研究所,西安,710049
  2. 西安交通大学现代设计及转子轴承系统教育部重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202007017
  CLC： TB551;TH133.33
- Online First：10 July 2020，
  
  Published：2020
- 稿件说明：
移动端阅览
On-Line Rotational Speed Measurement of Rolling Bearing Cage Based on Ultrasonic Measurement with Spectrum Refinement[J]. 2020, 54(7): 139-145.
DOI：

On-Line Rotational Speed Measurement of Rolling Bearing Cage Based on Ultrasonic Measurement with Spectrum Refinement[J]. 2020, 54(7): 139-145. DOI： 10.7652/xjtuxb202007017.

摘要

针对实际工况下超声时间差法在线测量滚动轴承保持架转速的噪声抑制及高速测量准确性问题

提出了一种采用频谱细化的滚动轴承保持架转速超声测量方法。通过引入自相关分析及快速傅里叶变换抑制时域噪声对超声回波脉冲信号的影响

使用线性调频Z变换(CZT)频谱细化算法提高滚动体通过频率的计算精度

进而提高轴承保持架转速测量准确性。28 000 r/min下的高速滚动轴承保持架转速超声测量试验结果表明

该方法能够有效克服实际工况下的噪声影响

实现高速实际工况下轴承保持架转速波动的准确测量

测量误差在0.1%以内。

Abstract

Aiming at the problems of noise suppression and high-speed measurement accuracy in the on-line measurement of the rotational speed of rolling bearing cage under actual working conditions

a method for measuring the rotational speed of rolling bearing cage based on the ultrasonic measurement with spectrum refinement is proposed. The influence of time-domain noise on the ultrasonic echo pulse signal is suppressed by introducing autocorrelation analysis and FFT transform. The CZT spectrum refining algorithm is used to improve the calculation accuracy of the passing frequency of the roller

so as to improve the calculation accuracy of the bearing cage-s rotational speed. Experimental results of high-speed rolling bearing at 28 000 r/min show that this method can effectively overcome the influence of noise under actual working conditions

and achieve accurate measurement of high rotational speed under speed fluctuation with a measurement error less than 0.1%.

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references

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