高精度原子陀螺仪温控电路设计与实现

Design and implementation of temperature control circuit for high precision atomic gyroscope

为满足原子磁力计和陀螺仪试验研究中对温度稳定性的要求,本设计利用单片机、模数转换器采样技术和桥式推挽功率放大技术设计并研制了一种基于比例积分的改进控制算法和脉宽调制器输出控制的交流加热温控电路。试验结果表明:该温控电路峰值加热功率可达40 W,可在40 min内将目标温度加至150℃并进入稳态,且温控精度<0.02℃,产生的剩磁对磁共振信号展宽几乎没有影响。该方案控制灵活、可靠性高,为相关温控需求提供了一种新思路。

In order to meet the demands of temperature stability in atomic magnetometer and gyroscope experiments,an improved control algorithm based on PI and a PWM output control circuit for AC heating temperature control are designed and developed by using single chip microcomputer,AD sampling technology and bridge transformerless(BTL).Test results show that the peak heating power can reach 40 W,the target temperature can be increased to 150℃ and into the steady state within 45 minutes,the temperature control precision is less than 0.02℃,the control is flexible,high reliability,and the residual field generated has little effect on the linewidth of the magnetic resonance signal.This scheme provides a new idea for related temperature control.