高精度多通道激光器恒定驱动电源研究与设计
Design and Research on Constant Driving Power Supply for High Precision Multi-Channel Lasers
武军凯 1茅正冲1
作者信息
- 1. 江南大学物联网工程学院,江苏无锡 214000
- 折叠
摘要
为了对多个激光器进行可靠性测试,实现分时工作,同时降低驱动电路体积,选用多路选择开关和多路模拟开关以实现多通道下光电二极管PD和雪崩光电二极管APD的切换,通过设置DAC数模转换芯片不同工作点电压,实现一种可以驱动多通道不同型号激光器的恒定驱动电源电路;电路设计中利用深度负反馈原理来提高系统的稳定度,设计了双OPA和MOS管进一步减小漏电流引起的偏差,优化了电压-电流线性度;软件设计中引入强化学习Actor-Critic框架对RBF-PID算法参数自适应调整,缩短系统动态平衡时间的同时具有智能性;实验表明该驱动电源具有输出精度高(＜0.1％),稳定性强(0.05％),纹波系数低(＜1 μA),动态响应时间快,抗干扰能力强等优点.
Abstract
In order to achieve time-sharing operation and conduct reliability test for multiple lasers,and reduce the size of the driv-er circuit,multiplex selector and analog switch are chosen to realize the switching of photodiode(PD)and avalanche photodiode(APD)under multiple channels,and the digital-to-analog converter(DAC)chip with different working voltages is configured to real-ize the constant driving power circuit that can drive multiple channels of various laser diodes.In the circuit design,the deep negative feedback is used to improve the stability of the system,the dual operational amplifier(OPA)and MOS tubes are designed to further reduce the deviation caused by leakage current and optimize the voltage-current linearity.In the software design,the reinforcement learning Actor-Critic framework is introduced for the adaptive adjustment of the radial basis function and proportional integral deriva-tive(RBF-PID)algorithm parameters to shorten the system dynamic balancing time,At the same time,it has an intelligence;The ex-perimental results show that the driving power supply has the shortages of a high output precision of less than 0.1％,high stability of less than 0.05％,low ripple coefficient of less than 1 μA,quick dynamic reaction time,and strong anti-interference ability.
关键词
激光器/模拟开关/恒定驱动电源/Actor-Critic/RBF-PIDKey words
laser diode/analog switch/constant drive power supply/Actor-Critic/RBF-PID引用本文复制引用
基金项目
国家自然科学基金青年基金(6170185)
国家自然科学基金(61901206)
出版年
2024
NETL
NSTL
万方数据