一个紧的高精度级联PID控制激光驱动器,用于空中连贯LiDAR应用
Zixuan Ming1, Xianzhuo Li1, Yanyi Wang1
1Key Laboratory of Specialty Optics and Optical Access Networks, Institute for Advanced Communication and Data Science, Shanghai University, Shanghai 200444, China.
Sensors (Basel, Switzerland)
|May 14, 2025
概括
这项研究介绍了一种用于空中相干多普勒LiDAR的新型激光驱动器,增强了精确的双频控制. 该系统实现了稳定的激光性能,改善了环境监测和自主系统的LiDAR功能.
科学领域:
- 光学和光子学 在光学和光子学.
- 航空航天工程 航空航天工程
- 控制系统 控制系统
背景情况:
- 精确的双频激光控制对于空中相干多普勒激光雷达系统至关重要.
- 现有系统在不同的环境条件下保持稳定的激光性能面临挑战.
研究的目的:
- 开发一种创新的激光驱动器架构,用于在LiDAR中精确的双频激光控制.
- 为了提高空中LiDAR应用中的激光频率和功率的稳定性和精度.
主要方法:
- 实现一个紧的硬件设计,集成级联比例整数导数 (PID) 控制.
- 整合频率-温度补偿机制,以提高稳定性.
- 动态调整双激光节拍频率在一个广泛的范围内 (-1GHz到+2GHz).
主要成果:
- 实现了长期温度波动低于0.007°C,温度稳定时间低于4秒.
- 线性恒定电流源的长期功率波动低于1%的证明.
- 对于动态双激光节拍频率,保持在3MHz内的频率差异波动.
结论:
- 开发的激光驱动器架构通过精确的双频激光控制显著提高了LiDAR性能.
- 该系统的稳定性和动态调整能力为先进的环境传感,大气监测和自主系统开辟了可能性.
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