激光系统中半导体激光器温度稳定系统研究与设计

刘熙明; 魏旭; 窦立刚

doi:10.11884/HPLPB201931.180335

激光系统中半导体激光器温度稳定系统研究与设计

doi: 10.11884/HPLPB201931.180335

中国航天科工集团第十研究院贵州航天天马机电科技有限公司，贵州遵义 563000

基金项目:

国家自然科学基金项目 61462015

详细信息

作者简介:
刘熙明(1993—)，男，工程师，主要从事自动化智能控制、无线通信方面的研究；472148691@qq.com

中图分类号: TP29
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- 被引次数: 0
出版历程
- 收稿日期: 2018-11-21
- 修回日期: 2019-01-18
- 刊出日期: 2019-02-15

Research and design of semiconductor laser temperature stabilization system in laser system

Guizhou Aerospace Tianma Mechanical and Electrical Technology Co, Ltd, 10th Academy of China Aerospace Science and Technology Group, Zunyi 563000, China

摘要

摘要: 激光器系统中半导体激光器的功率输出稳定度和工作温度有很大的关系，为了使大功率半导体激光器输出功率稳定，需要对激光器实现高精度、快速温度控制。针对现有的激光系统中激光器温度控制系统存在控制精度不够高、控制速度慢等问题，设计了一种温度稳定系统，采用PT-100热电偶测量激光器温度，并使用最小二乘法对温度数据进行拟合，使得温度测量精度达到0.01 ℃；使用改进粒子群算法优化(PSO)的PID控制器实现温度控制。仿真实验和实际测试表明，所设计的温度稳定系统能够很好地控制激光器温度，达到目标温度所需的调节时间小于11 s，达到稳态后温度波动在±0.02 ℃内。与传统的温度控制方式相比，所设计的系统能够实现参数自整定并自动调节温度，对大功率激光系统中激光器温度具有良好稳定效果。
- 半导体激光器 /
- 大功率激光器 /
- 温度稳定控制 /
- 改进粒子群算法 /
- PID控制器
Abstract: The power output stability of semiconductor laser in the laser system is closely related to the working temperature. As the control precision is not high and control speed of temperature control system is slow in the laser system, this paper discusses a new temperature stabilization system. This system gets laser temperature by PT-100 temperature sensor, and uses the least squares fitting to process the temperature data, thus to ensure the temperature measurement accuracy of 0.01 ℃. And the system adjusts the temperature by PID controller whose parameter is optimized by particle swarm optimization algorithm. Simulation experiments and actual test show that of the temperature system can quickly stabilize the temperature of laser, the time of adjustment is less than 11 s. And the fluctuations of temperature is about ±0.02 ℃ after the system reaching the steady state. Compared with the traditional temperature control method, the system can achieve self-tuning of parameters and automatically adjust the temperature, the laser temperature in the high-power laser system has a good stability.
- semiconductor laser /
- high power laser /
- temperature stability control /
- improved particle swarm optimization /
- PID controller

HTML全文

图 1 系统控制结构

Figure 1. Control structure of system

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图 2 温度测量电路

Figure 2. Schematic diagram of temperature measurement circuit

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图 3 温度控制部分电路图

Figure 3. Schematic diagram of temperature control circuit

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图 4 控制系统原理图

Figure 4. Control principle of system

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图 5 测试设备连接结构图

Figure 5. Connection structure diagram of test equipments

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图 6 实测温度、预测温度以及预测误差结果

Figure 6. Error of measured temperature and predicted temperature

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图 7 PSO-PID控制器和PID控制器控制结果对比

Figure 7. Contrast of control result between PSO-PID control and PID control

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图 8 激光器温度控制系统安装结构示意图

Figure 8. Schematic diagram of installation structure of laser temperature controller

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图 9 软件控制流程图

Figure 9. Flow chart of software control

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图 10 温度控制测试结果

Figure 10. Test result of temperature control

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图 11 温度稳定测试结果图

Figure 11. Test results of temperature stability

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