中国激光, 2014, 41 (3): 0305004, 网络出版: 2014-02-26
分布式全光纤微振动传感器研究
Research of All-Fiber Micro-Vibration Multiplexing Sensors
光纤光学 全光纤微振动传感器 频率调制连续波 光强度调制 fiber optics all-fiber micro-vibration sensor frequency modulated consecutive wave optical intensity demodulation
摘要
振动主动控制是消除干扰和提高机械加工精度的主要手段之一。振动主动控制的前提是对频率在5 kHz以上微振动信号进行准确测量。针对现有光纤光栅传感器在测量高频微振动信号上存在的频率低、结构复杂、无法分布式测量等不足,采用频率调制连续波(FMCW)技术结合光强度调制,设计了一种全光纤分布式微振传感器,并通过压电换能器(PZT)微振测量实验和仿真对传感器的性能进行验证,能够分布式测量频率最高为60 kHz的微振动信号。
Abstract
Vibration active control is one kind of main methods to eliminate interference and improve machining accuracy. The premise of vibration active control is the precise measurement of micro-vibration signal whose frequency is upper 5 kHz. A full-fiber micro-vibration distributed sensor is designed using frequency modulated consecutive wave (FMCW) and light intensity modulation technology, aiming at the shortage of existing grating sensor used for micro-vibration signal measurement, such as low frequency, complex structure and individual measurement etc. Through piezoelectric transducer (PZT) micro-vibration measuring experiment and simulation, it can prove that top frequency of 60 kHz for distributed measurement is achieved.
韩屏, 谢涌泉, 刘阳. 分布式全光纤微振动传感器研究[J]. 中国激光, 2014, 41(3): 0305004. Han Ping, Xie Yongquan, Liu Yang. Research of All-Fiber Micro-Vibration Multiplexing Sensors[J]. Chinese Journal of Lasers, 2014, 41(3): 0305004.