CAJ | 학술논문

为了实现对半导体激光器温度的高精度控制，利用热电制冷器、温度传感器与相应的散热装置，设计了一套半导体激光器温度控制的实验系统。首先采用热力学分析方法，对实验系统进行了理论分析，建立了该温控实验系统数学模型与相应的传递函数；其次，在取得了半导体激光器温度数据的条件下，根据模型参量的特点，提出了一种结合阶跃响应的实验曲线，应用非线性曲线最小二乘拟合进行模型参量的辨识；最后利用该模型参量进行了系统仿真和实验验证。结果表明，仿真曲线、拟合曲线与实验曲线结果一致，拟合的模型参量具有较高的预测精度。这些结果对优化调整温度控制实验是有帮助的。
위료실현대반도체격광기온도적고정도공제，이용열전제랭기、온도전감기여상응적산열장치，설계료일투반도체격광기온도공제적실험계통。수선채용열역학분석방법，대실험계통진행료이론분석，건립료해온공실험계통수학모형여상응적전체함수；기차，재취득료반도체격광기온도수거적조건하，근거모형삼량적특점，제출료일충결합계약향응적실험곡선，응용비선성곡선최소이승의합진행모형삼량적변식；최후이용해모형삼량진행료계통방진화실험험증。결과표명，방진곡선、의합곡선여실험곡선결과일치，의합적모형삼량구유교고적예측정도。저사결과대우화조정온도공제실험시유방조적。
In order to achieve high precision temperature control of a semiconductor laser , an experimental temperature control system was designed by using a thermoelectric cooler , a temperature sensor and corresponding radiators .Firstly, the mathematical model and the corresponding transfer function of temperature control were established by utilizing thermodynamic analysis method after theoretical analysis .Secondly , after obtaining the temperature data of the semiconductor laser , according to the characteristics of model parameters , an empirical curve of step response was presented and model parameters were identified by nonlinear curve least square fitting .Finally, the system was simulated based on the model parameters and experimental verification was carried out .The results show that the fitting curve and emulation curve is consistent with experimental curve and the fitting model parameters have better prediction accuracy .The result is helpful for optimizing temperature control .