一种悬臂梁式光纤光栅振动传感器研究  

Study on a Cantilever Beam FBG Vibration Sensor

作　　者：贾振安[1] 张星 李康[1] 樊庆赓 JIA Zhen’an;ZHANG Xing;LI Kang;FAN Qinggeng(Key Laboratory of Photoelectric Gas-Oil Logging and Detecting, Ministry of Education, School of Science, Xi’an Shiyou University, Xi’an 710065,China)

机构地区：[1]西安石油大学理学院光电油气测井与检测教育部重点实验室,陕西西安710065

出　　处：《压电与声光》2019年第1期21-24,共4页Piezoelectrics & Acoustooptics

基　　金：陕西省教育厅重点实验室科研计划基金资助项目(17JS105);陕西省"13115"科技创新工程重大科技专项基金资助项目(2009ZDKG-42)

摘　　要：针对悬臂梁式振动传感器进行了研究,主要阐述了传感器的工作原理与理论分析,并对传感器的幅频特性和灵敏度进行了实验研究。实验结果表明,振动传感器的固有频率为90Hz,传感器的灵敏度高达121pm/g(g=9.8m/s2为重力加速度),平坦区域为10～50Hz,振动传感器在低频范围内具有较好的频率响应。最后对传感器的悬臂梁进行了疲劳分析与优化改进,使悬臂梁的疲劳寿命提高了150%。The cantilever beam vibration sensors are studied in this paper. it mainly expounds The working principle and theoretical analysis of the sensor are described, and the experimental study on the amplitude frequency characteristics and sensitivity of the sensor has been carried out. The experimental results show that the natural frequency of the vibration sensor is 90 Hz, the sensitivity of the sensor is as high as 121 pm/ g (g =9.8 m/s^2, which is the acceleration of gravity), and the flat area is 10 to 50 Hz. The vibration sensor has good frequency response in low frequency range. Finally, the fatigue analysis and optimization of the cantilever beam of the sensor are carried out, and the fatigue life of cantilever beam is increased by 150%.

关 键 词：悬臂梁 光纤光栅 固有频率 灵敏度 疲劳分析 优化设计 

分 类 号：TN253[电子电信—物理电子学] TM2[一般工业技术—材料科学与工程]