基于光纤光栅的扭矩传感器

为了实现恶劣条件下对扭矩的精确稳定测量,设计并实现了一种新型的基于光纤光栅的扭矩传感器。为克服扭矩测量系统易受外界影响的缺点,设计了光纤光栅全桥光路,实现了温度和弯矩的自动补偿。通过扭矩标准装置加载试验和水下环境加载试验分别测试了其测量精确度以及水下工作性能。结果表明,该光纤光栅扭矩传感器的最大非线性误差、重复性以及水下工作稳定性均达到0.1%以内,说明该传感器不但具有良好的测量精度,而且能够在船用环境等恶劣扭矩测量条件下较好地工作。研究结果为船用环境中扭矩测量的研究与应用提供了重要参考。

Torque Transducer based on Fiber Bragg Grating

In order to obtain the accurate torque measurements in harsh condition, such as marine environment, a torquetransducer based on fiber Bragg grating is proposed in this paper. According to its optimized elastomer design and fiber Bragg grating patching tactics, the new proposed torquetransducer realizes automatic compensations of temperature and bending moment which avoids influences from environment. The accuracy and stability of the torquetransducer, as well as its underwater performance are tested by loading tests both in air and in underwater environment, which indicate the designed torquetransducer can be well used in harsh marine environment. The maximum nonlinear error, repeatability and stability underwater are all within 0.1%.