Li Jiachong, Wang Lingyun, Li Guangxi, Mu Sida
School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China.
Sensors (Basel). 2023 Aug 3;23(15):6908. doi: 10.3390/s23156908.
In a laboratory environment, in order to test the attitude recognition capability and accuracy of the satellite attitude sensor-the infrared Earth sensor-the infrared Earth simulator is fixed on a five-axis turntable to enable multi-angle testing. In the past, the temperature control system of the Earth simulator was water cooled, which not only affected the working accuracy of the Earth simulator but also affected its size and portability and made it more difficult to use on the turntable. Therefore, we designed a cooling method for the cold plate based on semiconductor cooling technology combined with air cooling, and we designed a fuzzy PID control algorithm to accurately control the temperature according to this cooling method. In this article, we use SOLIWORKS to build the system model for the system and use the ANAYS Workbench to perform temperature analysis of the Earth simulator. The results show that the cold plate temperature can be maintained at 20.089 °C when the hot plate temperature is 85 °C. The overall temperature uniformity of the hot plate is better than ±0.3 °C, which meets the index requirements of the Earth simulator. We found that this cooling method can replace water cooling, giving the simulator the advantage of being miniaturized, and it can be adaptable to the turntable, which can be widely used in various sizes of Earth simulators and in various complex environments and operating conditions.
在实验室环境中，为了测试卫星姿态传感器——红外地球敏感器的姿态识别能力和精度，将红外地球模拟器固定在五轴转台上以实现多角度测试。过去，地球模拟器的温度控制系统采用水冷方式，这不仅影响地球模拟器的工作精度，还影响其尺寸和便携性，使其在转台上的使用更加困难。因此，我们基于半导体冷却技术结合风冷设计了一种冷板冷却方法，并根据该冷却方法设计了一种模糊PID控制算法来精确控制温度。在本文中，我们使用SOLIWORKS为系统构建系统模型，并使用ANSYS Workbench对地球模拟器进行温度分析。结果表明，当热板温度为85℃时，冷板温度可维持在20.089℃。热板的整体温度均匀性优于±0.3℃，满足地球模拟器的指标要求。我们发现这种冷却方法可以取代水冷，使模拟器具有小型化的优势，并且它可以适应转台，可广泛应用于各种尺寸的地球模拟器以及各种复杂环境和运行条件。
