基于分级控制策略的激光器组件恒温控制技术  

Hiberarchy Temperature Control Strategy for LDM

作　　者：杨明伟[1] 许文海[2] 唐文彦[1] 

机构地区：[1]哈尔滨工业大学电气学院,黑龙江哈尔滨150001 [2]大连海事大学信息学院,辽宁大连116026

出　　处：《光电子．激光》2006年第9期1069-1073,共5页Journal of Optoelectronics·Laser

基　　金：哈尔滨工业大学跨学科交叉研究基金资助(HIT.MD2001.40)

摘　　要：首先综合考虑环境温度、热沉、LD组件（LDM）注入电流以及热电制冷器（TEC）电流等因素，建立了LDM恒温控制的一维传热数学模型，进而分析了影响LDM温度稳定性的主要因素．提出了分级控制方法；结合硬件实现比例积分（PI）算法动态特性好和数字电位计可编程控制的优点．提出了一种结合电位器数字控制技术与PI算法实现变PI控制的方法；在环境温度为20±3℃条件下，进行了对比实验。结果表明，在10～40℃范围内，未考虑环境温度影响的稳定度为±0．045℃，而采用分级控制策略的恒温控制方法后稳定度为±0．003℃。In order to ensure the accurate measurement of laser diode module（LDM）, it was important to maintain a high temperature stability. Here we presented a comprehensive one dimensional thermal model for LDM that considered ambient temperature, heat sink, LDM current and thermoelectric（TEO） current, An analysis was shown to explain the dominant terms that effect on temperature control. To eliminate the influence from ambient temperature,the hiberarchy control strategy was presented. In addition,a new controller was applied in temperature control system. The controller realized the （PI） algorithm by hardware and changed the parameters by digital potentiometer. Experimental results indicate that the temperature stability is ± 0. 045℃ at 10-40℃ without the hiberarchy control strategy,while the temperature stability can attain to ± 0. 003 ℃ at 10-40 ℃ with the strategy when the ambient temperature is changing in the scope of 6 ℃.

关 键 词：LD 温度控制 比例积分(PI) 热电制冷器(TEC) 

分 类 号：TN248.4[电子电信—物理电子学]