基于Bang-Bang和PID复合控制的红外探测器温控系统设计  

Temperature Control System Design of Infrared Detector Based on Bang-Bang and PID Control

作　　者：朱双双 邹鹏[2,3] 路美娜 张爱文 刘振海 裘桢炜[2,3] 洪津[2,3] 

机构地区：[1]中国科学技术大学,安徽合肥230026 [2]中国科学院安徽光学精密机械研究所,安徽合肥230031 [3]中国科学院通用光学定标与表征技术重点实验室,安徽合肥230031

出　　处：《红外技术》2017年第11期990-995,共6页Infrared Technology

基　　金：国家自然科学基金(41405037)

摘　　要：红外探测器作为星载偏振探测载荷的核心部件,用于实现短波红外波段辐射偏振信息的光电转换。为保证应用性能,需要对探测器进行精密温控,保证其工作在较低且稳定的温度以降低探测器热噪声和暗电流。本文介绍了一种红外探测器温控系统,采用FPGA控制完成温度信号的采集并输出控制信号,数模转换器控制三极管驱动电流完成半导体制冷器的驱动,采用Bang-Bang和PID复合控制算法完成探测器的精密温控,测试结果表明,温控精度优于±0.1℃,温度稳定时间小于6 min,可将探测器在较短的时间内控制在目标温度范围内,为实现短波红外波段的高精度偏振信息测量提供保障。An infrared detector is the core component of a spaceborne polarimetric detection load, which is used to implement short-wave infrared radiation and obtain the polarization information of photoelectric conversion. A short-wave infrared detector is required to operate at low temperatures to reduce the thermal noise and dark current to achieve better performance. In order to achieve the required working temperature conditions, the detector requires precise temperature control. This study introduces an infrared detector temperature control system regulated by an FPGA to achieve temperature signal acquisition and an output control signal, adopts the method of DAC control of the transistor drive current to drive the semiconductor refrigeration device and adopts the Bang-bang and PID control to achieve precise temperature control. The experimental results show that the temperature control precision is better than ＋ 0.1 ~C, and the temperature is stable for less than 6 rain. This temperature control system has a high-precision temperature control, temperature control speed, and other characteristics, which result in short-wave infrared polarization information measurement with high precision.

关 键 词：Bang—Bang控制 PID控制 温度控制 红外探测器 半导体制冷器(TEC) 

分 类 号：TP73[自动化与计算机技术—检测技术与自动化装置]