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Donaldson Reversal Error Separation Method Based on Two-Point Interpolation for Subsample Keyphasor Timing Estimation
编号：77 访问权限：仅限参会人 更新：2026-09-23 10:24:07 浏览：1次 口头报告

报告开始：暂无开始时间（Asia/Shanghai）

报告时间：暂无持续时间

所在会场：[暂无会议] [暂无会议段]

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摘要
Error separation is a fundamental problem in precision spindle error-motion measurement. Accurate angular correspondence between the two measured profiles acquired before and after reversal is essential for achieving high-precision error separation using the Donaldson reversal method. However, at limited sampling rates, keyphasor timing quantization errors reduce the accuracy of this angular correspondence. To address this issue, this paper proposes a subsample keyphasor timing estimation framework integrated with the Donaldson reversal error separation procedure. First, two-point linear interpolation is applied to the raw keyphasor signal to estimate the threshold-crossing instant with subsample resolution. Second, adjacent subsample keyphasor timing instants are used as single-revolution boundaries to perform revolution-by-revolution segmentation and equal-angle resampling. Third, the resampled revolutions are synchronously averaged while maintaining a common phase reference. Finally, the method is validated using downsampled pre- and post-reversal experimental data and static dial-indicator measurements. The results show that the proposed method reduces the keyphasor timing-estimation error by 56.84% on average and improves roundness error separation accuracy at low sampling rates, without requiring hardware upgrades.
关键词
Spindle radial error motion,Donaldson reversal method,keyphasor signal,subsample timing estimation,roundness error
报告人
Junbo Zhao
Master's Student Anhui University

稿件作者
Junbo Zhao Anhui University
永斌 刘 安徽大学
Sheng Wang China North Vehicle Research Institute
Zhenkai Meng Anhui University
Juan Xu Anhui University
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重要日期

  • 会议日期

    11月06日

    2026

    至

    11月08日

    2026

  • 10月15日 2026

    初稿截稿日期

主办单位
IEEE Instrumentation and Measurement Society
承办单位
Sichuan University
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