基于Bang-Bang和PID复合控制的红外探测器温控系统设计

发布时间：2018-05-01 01:25

  本文选题：Bang-Bang控制 + PID控制　； 参考：《红外技术》2017年11期

【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。
[Abstract]:As the core component of the spaceborne polarization detection load, the infrared detector is used to realize the photoelectric conversion of the radiation polarization information in the short-wave infrared band. In order to ensure the performance of the detector, it is necessary to control the temperature of the detector precisely and to work at a low and stable temperature to reduce the thermal noise and dark current of the detector. In this paper, a temperature control system of infrared detector is introduced. The temperature signal is collected and output by FPGA control, and the drive current of semiconductor cooler is controlled by digital-analog converter. The precision temperature control of the detector is accomplished by using Bang-Bang and PID compound control algorithm. The test results show that the temperature control precision is better than 卤0.1 鈩，

本文编号：1827113