红外与激光工程, 2020, 49 (7): 20190461, 网络出版: 2020-08-19  

VCSEL激光器抗干扰温度控制

Anti-interference temperature control for VCSEL laser
作者单位
北京科技大学 机械工程学院,北京 100083
摘要
由于VCSEL具有低功耗、小体积、高调制频率和容易集成等特征,被广泛应用于磁探测领域之中。作为一种高精密的传感器,原子磁强计在测量磁场过程中由于激光器的输出不稳定导致测量精度下降。针对环境等干扰导致激光器的输出不稳定问题,设计了一种可以抵抗环境温度变化的控制器。首先,通过带DSP内核的ADAU1401A芯片与DPSD方法实现了高分辨率温度解算;然后,通过系统辨识的方式建立温控数学模型;最后,应用干扰观测器与内模控制原理设计出抗扰动、低超调、鲁棒性的控制器。实验结果表明:在70 ℃温度下, 存在干扰的控制精度为±0.003 ℃,常温下控制精度为±0.001 5 ℃,为激光器稳定输出与高精度磁场测量奠定了基础。
Abstract
Due to its low power consumption, small size, high modulation frequency and easy integration, VCSELs are widely used in the field of magnetic detection. As a high-precision sensor, the atomic magnetometer reduces the measurement accuracy due to the unstable output of the laser during the measurement of the magnetic field. A controller that can resist change in ambient temperature was designed to deal with the instability of the output of the laser due to environmental disturbance. Firstly, the high-resolution temperature solution was realized by the ADAU1401A chip with DSP core and DPSD method. Then the temperature control mathematical model was established by means of system identification. Finally, the disturbance observer and internal model control principle were applied to design anti-disturbance and low overshoot robust controller. The experimental results show that the control accuracy of interference is ±0.003 °C at 70 °C, and the control accuracy is ±0.001 5 °C at room temperature, which lays a foundation for stable output of laser and high-precision magnetic field measurement.

韩天, 张雨霖, 缪存孝, 刘建丰, 薛帅. VCSEL激光器抗干扰温度控制[J]. 红外与激光工程, 2020, 49(7): 20190461. Tian Han, Yulin Zhang, Cunxiao Miao, Jianfeng Liu, Shuai Xue. Anti-interference temperature control for VCSEL laser[J]. Infrared and Laser Engineering, 2020, 49(7): 20190461.

引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!