摘要
星敏感器探测器用于得到精确的星图数据,以解算出高精度的位置、姿态等信息。而星敏感器在轨运行时,需要控制探测器的工作温度,使其工作性能稳定可靠。提出了一种基于FPGA的星敏感器探测器制冷控制系统。该系统采用分段式数字PID控制算法生成脉冲宽度调制(PWM)波驱动半导体制冷器进行高精度制冷,电路结构简单,可靠性高。通过实验验证,该系统具有制冷响应快、超调量小、控温精度高的特点,控温精度可达±0.25℃。
A star sensor detector is used to obtain accurate star images to calculate high-precision position,attitude and other information.When the star sensor is in orbit,it needs to control the working temperature of the detector to make its working performance stable and reliable.The paper presents a star sensor refrigeration control system based on FPGA.The system uses a piecewise digital PID control algorithm to generate the PWM wave to drive the semiconductor cooler for high precision refrigeration,which has a simple structure of the circuit and high reliability.The experimental results show that the system has the characteristics of quick cooling response,small overshoot and high temperature control precision which can reach±0.25℃.
作者
宋雪冬
周琦
李猛
唐行菊
赵君
SONG Xuedong;ZHOU Qi;LI Meng;TANG Xingju;ZHAO Jun(Shanghai Aerospace Control Technology Institute,Shanghai 201109;Shanghai Key Laboratory of Aerospace Intelligent Control Technology,Shanghai 201109)
出处
《飞控与探测》
2022年第5期47-51,共5页
Flight Control & Detection
基金
国家重点研发计划课题(2019YFA0706002)
国家重点研发计划课题(2019YFA0706003)。
