CAJ | 학술논문

为了使半导体激光器(LD)能够稳定工作,设计并实现了一个高效的温度控制系统。该系统使用MSP430单片机作为处理器，负温度系数热敏电阻(NTC)作为温度传感器，半导体制冷器(TEC)作为执行元件。系统通过自整定模糊PID算法，采用闭环负反馈结构实现对LD温度的稳定控制。实验结果表明，该控制系统温度从21.9℃上升到目标温度25℃，建立稳态的时间为68 s，且温度可控制在25±0.05℃范围以内。工作94 s后，系统能够将温度控制在25±0.008℃范围以内。与常规PID控制系统相比，基于模糊PID算法的温度控制系统能够在没有人工干预的情况下自动调节系统的PID参数，使系统具有更好的动态性能。
위료사반도체격광기(LD)능구은정공작,설계병실현료일개고효적온도공제계통。해계통사용MSP430단편궤작위처리기，부온도계수열민전조(NTC)작위온도전감기，반도체제랭기(TEC)작위집행원건。계통통과자정정모호PID산법，채용폐배부반궤결구실현대LD온도적은정공제。실험결과표명，해공제계통온도종21.9℃상승도목표온도25℃，건립은태적시간위68 s，차온도가공제재25±0.05℃범위이내。공작94 s후，계통능구장온도공제재25±0.008℃범위이내。여상규PID공제계통상비，기우모호PID산법적온도공제계통능구재몰유인공간예적정황하자동조절계통적PID삼수，사계통구유경호적동태성능。
In order to make a laser diode (LD) work stably, a highly efficient temperature control system was designed and implemented. The system was made up of the MSP430 microcontroller, negative temperature coefficient thermistor (NTC) and thermoelectric cooler (TEC), respectively, as control unit, temperature sensor and actuation element. Based on the self-tuning fuzzy PID algorithm, the negative feedback loop was adopted for controlling the temperature of a laser diode and enabling it to work stably. Experimental results show that the system stabilized the temperature within 25 ±0.05 ℃ in 68 seconds when it rose from 21.9℃ to 25℃. After 94 seconds, the temperature can stay within 25 ±0.008 ℃. Compared with a conventional PID control system, the temperature control system based on self-tuning fuzzy PID algorithm can adaptively adjust PID parameters in the system without manual operation. Therefore, the system has a better dynamic performance.