Design and characteristics of a non-contact rotational sensor based on a fiber Bragg grating  

作　　者：鹿利单 李红 姚齐峰 何巍 祝连庆 

机构地区：[1]Beijing Key Laboratory for Optoelectronics Measurement Technology, Beijing Engineering Research Center of Optoelectronic Information and Instruments, Beijing Information Science and Technology University [2]Beijing Laboratory for Biomedical Detection Technology and Instrument, Beijing Information Science and Technology University

出　　处：《Optoelectronics Letters》2016年第6期421-425,共5页光电子快报（英文版）

基　　金：supported by the Program for Cheung Kong Scholars and Innovative Research Team in University(No.IRT1212);the Project Plan of Beijing Municipal Science and Technology Commission(No.Z151100003615010);the Project Plan of Beijing Municipal Education Commission for Enhancing the Innovation Capability in 2015(No.TJSHG201510772016)

摘　　要：We propose a novel non-contact rotational sensor based on a fiber Bragg grating(FBG) packaged in a core of a magnetic head, which converts the introduced strain from the circular magnetic railings ruler into the rotational information. A mathematical model is built for processing the data obtained by an interrogator, and the accuracy and resolution of the measurements are analyzed by altering the radius and period of the circular magnetic railings ruler, as well as the dimension of the sensor. The experimental results show that it is in good accordance with the theoretical analysis on rotational angle, and the fitting results indicate that the results obtained from the rotational sensor match very well with the real rotational velocity with a linearity of 0.998 and a standard error of about 0.01.

关 键 词：rotational grating Bragg fitting match accordance circular permanent linearity magnet 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]