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清华大学学报(自然科学版)  2016, Vol. 56 Issue (6): 611-616    DOI: 10.16511/j.cnki.qhdxxb.2016.22.020
  精密仪器 本期目录 | 过刊浏览 | 高级检索 |
感应同步器测角系统误差测试及补偿
李海霞, 张嵘, 韩丰田
清华大学 精密仪器系, 北京 100084
Error testing and compensation of an inductosyn-based angular measurement system
LI Haixia, ZHANG Rong, HAN Fengtian
Department of Precision Instruments, Tsinghua University, Beijing 100084, China
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摘要 工程实用的高精度感应同步器测角系统因安装及校准等条件的限制, 有时难以应用圆光栅进行误差密集测补来提高精度。针对该问题研究了一种稀疏误差采样及补偿方法。在分析感应同步器测角系统误差特性的基础上, 提出先测补零位误差引起的细分误差成分, 再处理剩余细分误差的方式, 给出了由棱体获取全面、有效零位误差的方法及应用稀疏误差数据补偿的具体过程。实验表明: 应用该方法后某测角系统精度由最大误差峰峰值11.7″提升至 2.9″。该方法零位误差剔除充分, 实现了稀疏采样条件下感应同步器测角系统误差的全范围有效补偿。
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李海霞
张嵘
韩丰田
关键词 感应同步器误差补偿误差测试零位误差细分误差多面棱体    
Abstract:Installation and calibration difficulties restrict the use of circular gratings to improve the precision of practical high-precise inductosyn-based angular measurement systems through angle-error sampling and compensation. The study analyzes appropriate solutions of sparse error sampling and compensation methods for this problem. The error characteristics of inductosyn-based angular measurement systems are analyzed to compensate for the subdivision error caused by the existing zero-point error and other subdivision errors to get the overall zero-point error with a prism. An error compensation method is then given using sparse sampling data. Tests show that the precision of an angular measurement system is improved by this method from a peak to peak error of 11.7″ to 2.9″. The method accurately identifies the zero-point error and provides full-range error compensation with sparse sampling data for an inductosyn-based angular measurement system.
Key wordsinductosyn    error compensation    error testing    zero- point error    subdivision error    polyhedral prism
收稿日期: 2015-05-22      出版日期: 2016-07-01
ZTFLH:  TP712  
引用本文:   
李海霞, 张嵘, 韩丰田. 感应同步器测角系统误差测试及补偿[J]. 清华大学学报(自然科学版), 2016, 56(6): 611-616.
LI Haixia, ZHANG Rong, HAN Fengtian. Error testing and compensation of an inductosyn-based angular measurement system. Journal of Tsinghua University(Science and Technology), 2016, 56(6): 611-616.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2016.22.020  或          http://jst.tsinghuajournals.com/CN/Y2016/V56/I6/611
  图1 感应同步器测角系统[16]
  图2 任一对极下的细分误差示意
  图3 两相绕组的奇零位、偶零位误差
  图4 同一绕组的奇、偶零位误差合并
  表1 任一对极由零位误差引起的细分误差补偿量
  表2 任一对极下的附加误差
  表3 不同序列测试数据求差后的最大绝对值(″
  图5 4组相对零位误差序列
  图6 以0°为起点检验补偿前后的效果
  图7 以90°为起点检验补偿前后的效果
  图8 以180°为起点检验补偿前后的效果
  图9 以270°为起点检验补偿前后的效果
  表4 不同起点检测的最大误差峰峰值(″)
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