光纤陀螺系统热建模及仿真

在热状态方程的数学离散的基础上,从系统的角度出发,建立某一高精度光纤陀螺的热模型,介绍光纤陀螺电子系统热模型的建立过程,包括结构体几何模型的建立、内部热源模型的建立以及热敏光纤环体模型的建立.模型建立的方法不仅适用于研究对象,对于结构和组成类似的其他类型的陀螺也是适用的.并通过稳态热仿真研究了系统内热点分布及温度场分布;瞬态仿真分析了陀螺在常温(25.6℃)、低温(-40℃)以及高温(+60℃)环境下,启动过程中陀螺内部温度的变化,实验测试对比分析验证了模型的正确性.在此基础上得出了几个有意义的结论,这将有益于高精度光纤陀螺的工程化.

Building model and simulation about heat of fiber optical gyroscope

Based on the mathematical discreteness of the heat state equation, a high precision FOG(fiber-optic gyroscope) thermal model was built as system angel. The building course of the system thermal model of the fiber-optic FOG was introduced, including of building structure geometry model, inner heat source model and fiber coil model which is sensitive to the heat. The method building model is not only applicable to this type of FOG, but also to other type whose structure and composition is analogous. The heat point distribution and temperature field distribution of the system was studied by steady state thermal simulation. The inner temperature change during the startup at 25.6℃, -40℃ and +60℃ was analyzed by instantaneous state simulation, and the validity of the model was approved by the experiments. At last, some significative conclusions were gained. And this work will advance the batch production of the high precision optical fiber gyroscope.