基于集成光纤传感器的工装状态监控技术研究

在飞机装配过程中，大型工装的状态变化主要受温度和负载影响。分析光纤传感器的传光特性，设计一种具有温度和应变采集功能的集成光纤传感器，提出一种基于集成光纤传感器的工装状态监控方法。采用PSO-BP算法建立温度、应变和工装定位器位置变化之间的数学模型，实现对工装定位器位置变化的监控。通过单独对光纤应变传感器采集数据进行分析，提出一种应变参数标定方法，标定后通过检测应变实现对工装定位器的三维负载监控。在某型工装上搭建试验平台，标定后传感器的检测精度在±2 N以内，满足使用要求，验证了此方法的可行性。

Research on Tooling Status Monitoring Technology Based on Integrated Optical Fiber Sensor

In the process of aircraft assembly, the state change of large tooling is mainly affected by temperature and load. The light transmission characteristics of optical fiber sensor was analyzed, an integrated optical fiber sensor with the function of temperature and strain collection was designed, and a method of tooling state monitoring based on integrated optical fiber sensor was put forward. The mathematical models between temperature, strain and the position change of tooling positioner were established by PSO-BP algorithm, so as to realize the monitoring of the position change of tooling positioner. By analyzing the collected data of optical fiber strain sensor separately, a strain parameter calibration method was proposed. After calibration, the three-dimensional load monitoring of tooling positioner was realized by detecting the strain.A test platform was built on a certain type of tooling, the detection accuracy of the calibration sensor is less than ±2 N, which meets the use requirements, and the feasibility of the method was verified.