基于全光纤微振动传感器的定位系统研究

以噪声性质存在的微振动信号是造成干扰和影响机械加工精度的主要因素之一，消除干扰的前提是对微振源的准确测量和定位。针对现有基于光纤的定位系统存在的不足，设计了一种基于全光纤微振传感器的微振源定位系统，该系统要求最少4 个微振传感器，通过同时测量3 个传感器相对于另一个传感器的振动信号到达时间差(TDOA)来计算微振源的位置。通过实验对传感器和定位系统的性能进行验证，相对定位误差低于0.56%，且系统稳定可靠。

Abstract

The micro-vibration signal existing as noise is one of the main facts that cause the interference and affect the machining accuracy. The premise of interference elimination is the precise measurement and location of microvibration source. A micro-vibration location system based on full-fiber micro-vibration sensor is provided, aiming at the shortcoming of existing location system based on fiber. At least 4 micro-vibration sensors are needed in this system, and the position of micro-vibration source is calculated by measuring the time difference of arrival (TDOA) of vibration signal at one sensor relative to other 3 sensors. The performance of sensors and location system is verified by experiment, the relative location error is inferior to 0.56%, and it is stable and reliable.

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基于全光纤微振动传感器的定位系统研究

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