基于PID算法的高稳定性DFB激光器温度控制器  

High Stable DFB Temperature Controller Based on PID Algorithm

作　　者：李培[1] 

机构地区：[1]郑州旅游职业学院信息工程系,郑州450009

出　　处：《计算机测量与控制》2014年第4期1111-1113,共3页Computer Measurement &Control

基　　金：国家自然科学基金项目(41101095)

摘　　要：针对分布反馈式（DFB）激光器的输出波长和发光功率受其工作温度影响的问题，利用微型控制器TMS320LF28335设计并研制了高稳定性DFB激光器温度控制器；硬件电路主要包括TEC控制模块、温度信号采集模块和电流信息采集模块，采用数字离散化的Ziegler—Nichols比例一积分-微分（PID）控制算法，减少了温度的超调量，提高了该系统的稳定性，利用该温度控制系统，对中心波长为1．742μm的DFB激光器进行了温度控制测试；实验证明该系统的控制精度为土0．05℃，温度控制范围为5～60℃，并在长时间（220 min）运行中，DFB激光器工作状态稳定，中心波长未出现漂移。For the distributed feedback （DFB） laser＇ s output wavelength and optical power is affected by its operating temperature fluc- tuation, a high stable DFB laser temperature controller is designed and developed based on the micro-- controller TMS320LF28335. The hardware circuit includes TEC control module, temperature signal acquisition module and the current information acquisition module. In terms of software design, digital discrete Ziegler - Nichols proportion--integral--derivative （PID） control algorithm is utilized, which can reduce the temperature overshoot and enhance the stability of the whole system. Using the proposed temperature system, an temperature control experiment is performed utilizing a DFB laser with a center wavelength at 1. 742μm. The experimental results show that the tempera- ture accuracy and control range of this system can be achieved as ＋0.05℃ and 5 ℃-60℃, respectively. In addition, the tested DFB laser works stable and the center wavelength without any shift during long term （〉 220 minute） operation.

关 键 词：分布反馈式激光器 高稳定性 温度控制器 PID算法 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]