紫外成像光谱仪主动热控系统的设计与实现

为了确保紫外临边成像光谱仪的温度水平和温度梯度满足指标要求，分析了其所处空间环境并结合其光机电的特点，设计了整机的主动热控方案和被动热控方案。首先，总结了成像光谱仪热设计的基本原则，介绍了主动热控方案和被动热控方案。接着，利用最坏情况分析法分析了主动热控系统测温电路的测温精度。然后，根据主动热控方案的要求，对主动热控系统的硬件和热控策略进行了设计和实现。最后，规划了主动热控系统的验证试验，并对主动热控系统进行了试验验证。分析和实验结果表明：主动热控系统的测温精度满足≤±0.5℃的指标要求，主动热控系统能够保证紫外临边光谱仪13℃～18℃以及紫外环形成像仪8℃～18℃的温度水平要求，主动热控方案合理、可行，满足高可靠性的要求。

Design and Implementation of Active Thermal Control System for Ultraviolet Imaging Spectrometer

In order to ensure a proper averaged temperature and a temperature gradient of an ultraviolet imaging spectrometer, the imaging spectrometer situated in space environment is analyzed. According to its optic mechanical\|electronic characteristics, both active thermal control scheme and passive thermal control scheme for imaging spectrometer are designed. Firstly, the thermal design guidelines of the imaging spectrometers are summarized, and both active thermal control scheme and passive thermal control scheme are introduced. The worst case analysis method is used to analyze temperature measurement accuracy of temperature measurement circuit of the active thermal control system. Then according to the demand for the active thermal control scheme, both hardware and control strategy of the active thermal control system are designed and realized. Finally, a verification experiment of the active thermal control system is made . Experimental and analysis results indicate that the temperature measurement accuracy of the system is better than ≤±0.5℃, and the active thermal control system can ensure 13℃~18℃ averaged temperature of ultraviolet limb spectrometer and 8℃~18℃ averaged temperature of ultraviolet ring imager, thus meeting the thermal control system requirements. In conclusion, the active thermal control scheme is feasible and reasonable, and it can meet the requirement for high reliability.