四频激光陀螺热致零漂机理研究

Thermal Bias Mechanism of Four Mode Multi-OscillationRing Laser Gyro

针对制约提高激光陀螺精度的热效应这一重要因素,分析了主要热致零漂及其作用机理,推导出了朗缪尔温度漂移理论表达式。实验表明:外部温度变化与内部发热对陀螺漂移有着相同的效果,热效应主要以温度、温度速率与温度梯度方式影响零漂。

Thermal effect is one of the most important elements that affect the precision improvement of Ring Laser Gyro. The paper analyzes the dominant thermal bias and their working mechanism, and deduces the theory expression of Langmuir thermal drift. The experiment result shows that the inner thermal source has the same effect as the external thermal source in causing gyro drift. Thermal effects affect the bias mainly by temperature, temperature rate and temperature gradient.