CAJ | 학술논문

为了减小温度对半导体激光器输出光波长和功率稳定性的影响，设计了由恒流模块驱动半导体制冷器，通过改变恒流模块的电流来控制半导体制冷器的制冷量，利用分段积分的比例－积分－微分控制算法，选择最优控制参量，实现大功率半导体激光器的精密温控系统。系统包括高精度测温电路、控制核心DSP F28335、半导体制冷器控制电路、人机交互及通信模块。在5℃～26℃环境下对系统进行测试，实现50W大功率半导体激光器的恒温控制，温控范围为15℃～45℃，温控精度达到±0．02℃。结果表明，该系统温控范围广，控制精度高，满足大功率半导体激光器的温控要求。
위료감소온도대반도체격광기수출광파장화공솔은정성적영향，설계료유항류모괴구동반도체제랭기，통과개변항류모괴적전류래공제반도체제랭기적제랭량，이용분단적분적비례－적분－미분공제산법，선택최우공제삼량，실현대공솔반도체격광기적정밀온공계통。계통포괄고정도측온전로、공제핵심DSP F28335、반도체제랭기공제전로、인궤교호급통신모괴。재5℃～26℃배경하대계통진행측시，실현50W대공솔반도체격광기적항온공제，온공범위위15℃～45℃，온공정도체도±0．02℃。결과표명，해계통온공범위엄，공제정도고，만족대공솔반도체격광기적온공요구。
In order to reduce the influence of temperature on output wavelength and power stability of semiconductor lasers, a constant current module was designed to drive thermoelectric cooler .The cooling capacity of the thermoelectric cooler was controlled by changing the current of the constant current module .The optimal control parameters of proportion-integration-differentiation algorithm were set to realize high precision temperature control .The system consists of high precision temperature measurement circuit , control core of DSP F28335, thermoelectric cooler control circuit , human-computer interaction and communication module .Constant temperature control was realized for a 50W high power laser diode at 5℃~26℃ambient temperature, the temperature control accuracy reached ±0.02℃at 15℃~45℃.The results show that this system has a wide temperature control range and high control precision , which satisfies the requirement of temperature control of high power semiconductor lasers .