H_∞鲁棒控制在改善DFB激光器中的应用  

Application of H_∞ Robust Control in Improving DFB Laser

作　　者：臧怀泉[1] 李辉[1] 王智勇[2] 

机构地区：[1]燕山大学工业计算机控制工程河北省重点实验室,秦皇岛066004 [2]北京工业大学激光工程研究院,北京100124

出　　处：《北京工业大学学报》2012年第7期1041-1044,1051,共5页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(50237020)

摘　　要：针对分布反馈式(DFB)激光器频率响应曲线存在明显张弛振荡峰的问题,设计了一种控制系统.该控制系统能改善激光器频率响应特性,提高激光器鲁棒稳定性.在激光器存在老化现象的基础上,建立了激光器模型,并采用H∞鲁棒控制理论设计控制系统,在不同条件下,分析和比较了激光器频率响应曲线.仿真结果表明,设计的控制系统能明显抑制频率响应曲线的张弛振荡峰,增强激光器系统鲁棒稳定性,降低参数扰动对系统的影响.For the peak of relaxation oscillation in the frequency response curves of distributed feedback （DFB） laser, a control system was designed. The system improved the frequency response characteristics of lasers. On the basis of the ageing phenomenon of lasers, the model of lasers was established, and the control system was designed by using H∞ robust control theory. The frequency response curves of lasers were analyzed and compared under different conditions. Simulation results show that the designed control system can significantly restrain the peak of relaxation oscillation in the frequency response curves, enhance the robust stability of lasers and reduce the influence of parametric disturbance in the system.

关 键 词：半导体激光器 频率响应 张弛振荡 鲁棒稳定性 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TN248.4[自动化与计算机技术—计算机科学与技术]