Study on the Non-Contact FBG Vibration Sensor and Its Application  

作　　者：Tianliang LI Yuegang TAN Zude ZHOU Li CAI Sai LIU Zhongting HE Kai ZHENG 

机构地区：[1]Wuhan University of Technology, Wuhan, 430070, China

出　　处：《Photonic Sensors》2015年第2期128-136,共9页光子传感器（英文版）

摘　　要：A non-contact vibration sensor based on the fiber Bragg grating （FBG） sensor has been presented, and it is used to monitor the vibration of rotating shaft. In the paper, we describe the principle of the sensor and make some experimental analyses. The analysis results show that the sensitivity and linearity of the sensor are -1.5pm/um and 4.11% within a measuring range of 2 mm- 2.6mm, respectively. When it is used to monitor the vibration of the rotating shaft, the analysis signals of vibration of the rotating shaft and the critical speed of rotation obtained are the same as that obtained from the eddy current sensor. It verifies that the sensor can be used for the non-contact measurement of vibration of the rotating shaft system and for fault monitoring and diagnosis of rotating machinery.A non-contact vibration sensor based on the fiber Bragg grating （FBG） sensor has been presented, and it is used to monitor the vibration of rotating shaft. In the paper, we describe the principle of the sensor and make some experimental analyses. The analysis results show that the sensitivity and linearity of the sensor are -1.5pm/um and 4.11% within a measuring range of 2 mm- 2.6mm, respectively. When it is used to monitor the vibration of the rotating shaft, the analysis signals of vibration of the rotating shaft and the critical speed of rotation obtained are the same as that obtained from the eddy current sensor. It verifies that the sensor can be used for the non-contact measurement of vibration of the rotating shaft system and for fault monitoring and diagnosis of rotating machinery.

关 键 词：Rotating shaft FBG NON-CONTACT vibration sensor 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置] TG84[自动化与计算机技术—控制科学与工程]