涡流栅位移传感器绝对定位可靠性算法 |
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引用本文: | 姜盈盈,刘伟文,吕春峰,赵辉. 涡流栅位移传感器绝对定位可靠性算法[J]. 传感技术学报, 2013, 26(11) |
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作者姓名: | 姜盈盈 刘伟文 吕春峰 赵辉 |
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作者单位: | 上海交通大学电子信息与电气工程学院仪器系,上海,200240;上海交通大学电子信息与电气工程学院仪器系,上海,200240;上海交通大学电子信息与电气工程学院仪器系,上海,200240;上海交通大学电子信息与电气工程学院仪器系,上海,200240 |
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摘 要: | 为了提高涡流栅位移传感器绝对定位的可靠性,利用编码码道信号之间互补关系,提出了一种新型的编码码道码字识别算法,即三类码字识别算法,该算法可将编码码道归一化误差限提高到±0.1。在此基础上,对归一化误差曲线经过有选择性的最小二乘法拟合,可将归一化误差进一步降低至±0.05。实验证明该方法可以满足码字识别算法的要求,采用该技术的涡流栅位移传感器确保了绝对定位的可靠性,提高了传感器的稳定性。
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关 键 词: | 位移传感器 识别算法 误差修正 涡流栅 |
Algorithm on absolute position reliability about grating eddy-current position sensor |
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Abstract: | In order to improve the reliability of the absolute-position about grating eddy-current position sensor, three types code word recognition algorithm is proposed and increases the error limit to ±0.1, through using the complementary relationship of the signal. After using the least square method on the normalized error curve, the errors can be decreased to ±0.05. The experiments proof that the method completely meet requirements of the code word recognition algorithm. And the grating eddy-current position sensor, adopting the technology, could ensure not only the reliability of the absolute-position, but also the stability of the sensor. |
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Keywords: | position sensor recognition algorithm error correction grating eddy-current |
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