对于绝对光学编码器的离心率误差的自动补偿系统
Changhai Zhao1, Qiuhua Wan1, Lihui Liang1
1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China.
The Review of scientific instruments
|July 24, 2024
概括
异常误差显著影响光学编码器的精度. 这项研究引入了使用辐射代码路径的自动补偿系统,将平均平方误差从21.25降至3.66弧秒.
科学领域:
- 光电学是指光电子产品.
- 精密工程 精密工程是指精密的工程.
- 计量学 计量学 计量学
背景情况:
- 偏心误差是高精度光学编码器中不准确的主要来源.
- 传统的编码器设计往往难以减轻这种固有的错误.
- 精确的测量和补偿对于高级应用至关重要.
研究的目的:
- 开发和验证光学编码器的自动错误补偿系统.
- 为了减少异常误差对编码器精度的影响.
- 为了提高高精度光学编码器的整体性能.
主要方法:
- 在编码器磁盘上集成一个新的辐射代码路径,垂直于细代码路径.
- 使用来自光线代码通道的moiré边缘信号来实时测量编码器磁盘异心率.
- 基于测量异心率的异心率错误补偿算法的实施.
主要成果:
- 开发的系统成功地测量了编码器磁盘的偏心.
- 实时补偿显著降低了编码器的平均平方误差.
- 平均平方误差从补偿前的21.25弧秒下降到补偿后的3.66弧秒.
结论:
- 提出的自动错误补偿系统有效地减轻了光学编码器中的偏心误差.
- 这种方法在编码器准确度上有了显著的改进.
- 该系统显示了提高光学测量器件精度的巨大潜力.
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