{"title":"传感器非线性对锁相放大器输出的影响分析","authors":"Zhihua Feng, Rilong Liu, Dengfeng Yang, F. Kong","doi":"10.1109/IMTC.2005.1604469","DOIUrl":null,"url":null,"abstract":"Generally the lock-in amplifier (LIA) can be used to detect very weak signal. This is based on the fact that any signal with a different frequency from that of the LIA's reference signal will result in zero output. However, if the signal is measured by a sensor with some nonlinearity, the LIA indeed yields some mixed output that comes from the correlation between the measured signal and reference signal. This paper presents a theoretical analysis on the output of LIA. Furthermore, based on analysis results, a curve fitting method of measuring the sensor's dynamic and tiny nonlinearity is provided. Experimental results verify that it is a useful measurement method when the accuracy is focused on","PeriodicalId":244878,"journal":{"name":"2005 IEEE Instrumentationand Measurement Technology Conference Proceedings","volume":"61 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2005-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence Analysis of Sensor's Nonlinearity on Output of Lock-in Amplifier\",\"authors\":\"Zhihua Feng, Rilong Liu, Dengfeng Yang, F. Kong\",\"doi\":\"10.1109/IMTC.2005.1604469\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Generally the lock-in amplifier (LIA) can be used to detect very weak signal. This is based on the fact that any signal with a different frequency from that of the LIA's reference signal will result in zero output. However, if the signal is measured by a sensor with some nonlinearity, the LIA indeed yields some mixed output that comes from the correlation between the measured signal and reference signal. This paper presents a theoretical analysis on the output of LIA. Furthermore, based on analysis results, a curve fitting method of measuring the sensor's dynamic and tiny nonlinearity is provided. Experimental results verify that it is a useful measurement method when the accuracy is focused on\",\"PeriodicalId\":244878,\"journal\":{\"name\":\"2005 IEEE Instrumentationand Measurement Technology Conference Proceedings\",\"volume\":\"61 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2005-05-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2005 IEEE Instrumentationand Measurement Technology Conference Proceedings\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/IMTC.2005.1604469\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2005 IEEE Instrumentationand Measurement Technology Conference Proceedings","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IMTC.2005.1604469","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Influence Analysis of Sensor's Nonlinearity on Output of Lock-in Amplifier
Generally the lock-in amplifier (LIA) can be used to detect very weak signal. This is based on the fact that any signal with a different frequency from that of the LIA's reference signal will result in zero output. However, if the signal is measured by a sensor with some nonlinearity, the LIA indeed yields some mixed output that comes from the correlation between the measured signal and reference signal. This paper presents a theoretical analysis on the output of LIA. Furthermore, based on analysis results, a curve fitting method of measuring the sensor's dynamic and tiny nonlinearity is provided. Experimental results verify that it is a useful measurement method when the accuracy is focused on
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
