基于改进增量均值法的磁栅异常信号处理研究  

Research on Abnormal Signal Processing of Magnetic Grid based on Improved Incremental Mean Method

作　　者：卢俊 肖峻[1] 杨铮[1] 胡天喜 张欣 蒋鼎 

机构地区：[1]武汉理工大学机电工程学院,湖北武汉430070

出　　处：《数字制造科学》2017年第Z1期52-55,70,共5页

基　　金：湖北省科学技术研究与开发基金资助项目(201397289)

摘　　要：针对在绝对式磁栅位移传感器的实际使用过程中,磁栅信号不稳定性,信号故障偶有发生,磁栅返回的位移信号值异常情况出现较为频繁,在一定程度上影响了真实的位移数据的获取等问题,着重研究了磁栅信号产生原理与异常形式,通过基于距离模型的方法挖掘位移信号异常点,提出改进增量均值法,并针对磁栅位移信号特点对算法作出了改进。通过试验及实际运用,该方法的处理效果较好,很大程度上可消除位移异常信号对总体值的影响,提高位移精准度。In the practical working condition of the absolute magnetic grating displacement sensor,signal fault due to poor stability of the magnetic grid usually occurs. The abnormal value of the displacement signal returned by the magnetic grid occurs frequently,affecting the acquisition of real displacement data to a specific extent. To improve the reliability and provide accurate displacement data,this paper focuses on the principle and abnormal characterisitics of magnetic grid signal. Authors developanalgorithm improvement method for the mean increment andthe magnetic grid displacement signal features using the displacement signal of outlier mining method based on distance model. The experiment and practical application show that the developed method is effective on eliminating the influence of disturbance on the displacement return value and onimproving of the displacement accuracy.

关 键 词：绝对式磁栅位移传感器 异常点 距离模型 改进增量均值法 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]