| 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 |
摘要:
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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。 | |||
| 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 words：inductosynerror compensationerror testingzero- point errorsubdivision errorpolyhedral prism | |||
| 收稿日期: 2015-05-22 出版日期: 2016-07-01 | |||
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| 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 |
图表:
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| 图１ 感应同步器测角系统[１６] |
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| 图２ 任一对极下的细分误差示意 |
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| 图３ 两相绕组的奇零位、偶零位误差 |
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| 图４ 同一绕组的奇、偶零位误差合并 |
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| 表１ 任一对极由零位误差引起的细分误差补偿量 |
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| 表２ 任一对极下的附加误差 |
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| 表３ 不同序列测试数据求差后的最大绝对值(″ |
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| 图５ ４组相对零位误差序列 |
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| 图６ 以０°为起点检验补偿前后的效果 |
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| 图７ 以９０°为起点检验补偿前后的效果 |
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| 图８ 以１８０°为起点检验补偿前后的效果 |
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| 图９ 以２７０°为起点检验补偿前后的效果 |
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| 表４ 不同起点检测的最大误差峰峰值(″) |
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