涡流栅位移传感器绝对定位可靠性算法  

Algorithm on Absolute Position Reliability about Grating Eddy-Current Position Sensor

作　　者：姜盈盈[1] 刘伟文[1] 吕春峰[1] 赵辉[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院仪器系,上海200240

出　　处：《传感技术学报》2013年第11期1478-1482,共5页Chinese Journal of Sensors and Actuators

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。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.

关 键 词：位移传感器 识别算法 误差修正 涡流栅 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]