供气温度对静压气浮陀螺仪的影响

针对某型静压气浮陀螺仪长时间通电造成的温升问题,提出一种通过控制气浮轴承供气温度来降低陀螺马达温度的控制方法。结合流体力学和陀螺仪误差原理,分析了供气温度对陀螺仪精度的影响,并利用Fluent仿真分析,搭建了陀螺浮子组件与气浮轴承的流热耦合模型。结果表明:供气温度的变化并不会对仪表精度造成明显影响;降低供气温度对陀螺马达的温度变化影响显著,在一定条件下可以通过降低供气温度来延长陀螺仪连续通电时间。

Influence of Supply Air Temperature on Static Pressure Air Flotation Gyroscope

In order to solve the problem of temperature rise caused by long-term energization of a certain type of static pressure float gyro, a control method is proposed to reduce the temperature of the gyro motor by controlling the air supply temperature of the air bearing. Combining fluid mechanics and gyro error theory, the influence of gas supply temperature on the accuracy of the gyroscope was analyzed. Using the Fluent simulation analysis, the flow-heat coupling model of the float subassembly and the air bearing was established. The results show that the change of the supply air temperature does not have a significant effect on the accuracy of the instrument. Decreasing the supply air temperature has a significant influence on the temperature change of the gyro motor. Under certain conditions, the continuous supply time of the gyroscope can be prolonged by reducing the supply air temperature.