一种基于应变模态分析的舰船分布式挠曲姿态测量方法

针对舰船所处的恶劣环境，以及舰船导航和武器系统对姿态测量精度日益提高的要求，根据应变模态分析理论，建立了应变信息与姿态信息的变换关系，并提出了利用光纤Bragg光栅(FBG)传感器测量甲板的应变，求取由挠曲变形引起的姿态信息误差的方法。通过对简易模型的实验，验证了这种方法是有效的并且具有较高的精度。

Measuring Method for Ship's Distribution Deflection Attitude Based on Strain Modal Analysis

In view of the hostile environment of the ship, and the high accuracy requirement on attitude measurement determination of marine navigation and weapon system, this paper puts forward a transform relation between the strain and the attitude information based on the strain modal analysis theory. The method of strain measurement on deck based on optical fiber Bragg grating sensor is presented, and the deflection attitude information brought by deflection deformation is drawn. The experiment on a sample modal shows that this method is effective and has higher precision.