在高精度原子陀螺仪研究中,需要通过加热铷源释放铷原子,而铷原子释放速率和数量稳定性直接影响原子陀螺仪的精度。为了实现铷源的精密温度控制,设计了一种直接利用温控芯片控制和加热铷源的精密温控系统。该系统运用LTC1923驱动外部的全桥驱动管控制低磁线圈对铷源加热。经实验测定,铷源的温度稳定性能够稳定在±0.3 ℃以内。该温控精度能够使得腔体中铷原子的数量具有很好的稳定性,为原子陀螺的实现奠定了技术基础。该控制系统具有温控精度高、体积小、操控简单等特点。

In the research of high-precision atomic gyroscope, the rubidium atoms need to be released by heating the rubidium source, and rubidium atomic release rate and quantitative stability directly affect the accuracy of the atomic gyroscope. In order to achieve precise temperature control of the rubidium source, a rubidium temperature precision temperature control system which direct uses temperature control chip and control the temperature of rubidium is designed in this paper. LTC1923 is used to drive external full-bridge driver tube controling low magnetic coil heating of the rubidium source. The temperature stability of the rubidium source can be stabilized within ± 0.3 ℃ measured by experiment. The temperature control accuracy can make the cavity of the number of rubidium atoms with good stability. It lays the technical foundation for the realization of the atomic gyro. The control system has the advantages of high precision temperature control, small size, simple operation and so on.