基于复合信号的激光陀螺零偏误差补偿分析

作为一种集成了光学、电学和机械力学的复杂系统，激光陀螺可以精确地测量物体的角速率输出。为了满足惯性导航系统长时、高精度的测量要求，研究了激光陀螺内部不同类型的传感器与激光陀螺零偏误差之间的特性，在传统的基于温度的零偏误差补偿方法的基础上，引入了二频机抖激光陀螺内部温度传感器、光电二极管和粘在抖动机构上压电陶瓷的输出信息进行复合建模，利用非线性拟合能力强的支持向量机算法，针对不同类型信息与二频机抖激光陀螺零偏误差的相关性对模型进行优化。实验结果表明，该二频机抖激光陀螺零偏误差补偿模型的补偿精度高于传统的补偿方法。

Study on the ring laser gyroscope bias compensation based on the compound signals

As a complex system combined with optics, electronics and mechanics, the ring laser gyroscope (RLG) can measure the angle rate with high accuracy. In order to meet the requirement of longer-time and higher precision in inertial navigation system, the characteristics between the RLG drift error and different signals from various sensors are studied. Based on the traditional RLG drift error compensation model, compound signals from thermometers, photodiodes and piezoelectric ceramics attached on the dithered mechanism are introduced into the model. Moreover, by utilizing the support vector machine algorithm, the model is optimized by the correlation features between the mechanically dithered RLG (MDRLG) drift error and the compound signals. The experimental results show that the precision of the MDRLG drift error compensation model in this paper is higher than the traditional one.