基于SLD光源变流驱动的光纤陀螺快速启动研究

光纤陀螺的快速启动技术是应急武备系统、随动控制系统等特殊应用场合的首要要求。提出了一种通过变流调节模式来驱动光纤陀螺SLD光源的方法,建立了变流调节模型并计算了模型参数。通过辅助制冷器控制光源发光芯片温度,可使SLD光源输出光功率迅速达到稳定值。试验结果表明,高低温极限温度条件下SLD光源的启动时间可缩短为恒流模式的一半,特别是在低温启动时避免了SLD光源输出光功率的瞬间过冲带来的光纤陀螺中光电探测器的致盲效应。同时,光纤陀螺在极限高低温下的启动时间缩短1s,实现了光纤陀螺的快速启动。研究结果对光纤陀螺在高低温极限环境条件下的启动提供了有益的参考。

Research on Fast Startup of FOG Based on Current-Change Driving of SLD Light Source

Fast start-up of FOG is the primary requirement in some special fields such as emergency weapon equipments and servo control systems. In this paper, a method of current-change to drive SLD light source of FOG is put forward, and the model parameters are calculated. SLD light power can reach a certain value quickly in the way of controlling temperature of the SLD lighting chip by the auxiliary cooler. Experiment results show that the startup time of SLD light source can be reduced half compared to constant current mode in the condition of extreme high and low temperature. Especially, blind-zone effect of photoelectric detector caused by instantaneous overshot of SLD light source in the condition of low temperature start-up is escaped. In the meanwhile, the startup time of FOG can be reduced to 1s in the condition of high and low temperature, thus fast startup of FOG is realized. The research results are beneficial references to the study on the startup of FOG in the condition of high and low temperature.