研究了紫外成像光谱仪热控制的特点, 指出采用常规热设计理念对紫外成像光谱仪散热容易造成散热面面积大、主动加热功耗高等问题。基于热管理技术, 提出采用统一收集和综合管理仪器热源产生热量的方法来解决紫外成像光谱仪的热控制问题。对紫外成像光谱仪的热设计验证试验表明: 低温工况下整机平均温度变化为18～20 ℃, 最大轴向温差变化为1.0～2.4 ℃; 高温工况下整机平均温度变化为18～24.5 ℃, 最大轴向温差变化为1.2～3.3 ℃; 均满足热控指标要求。结果显示: 采用热管理技术综合收集和管理热量能够提高能量利用率、有效降低热控系统规模。提出的方法对其它空间光学遥感器的热控制具有一定参考意义。

The characteristics of thermal control for an ultraviolet imaging spectrometer is researched, and it points out that the conventional thermal design method to establish radiating surface directly will bring some problems such as big radiator area and high electric power for heaters. Therefore , this paper proposes a new thermal design method to solve the problems above. On the basis of thermal management technology, the method collects and manages the heat generated by the inner source of a spectrometer in unification and integration, by which the radiator area is as small as possible and the electric power for heaters is reduced. Thermal design verification results for the ultraviolet imaging spectrometer show that the variation range of mean temperature and the maximal axial temperature difference are 18℃-20℃, and 1.0℃-2.4℃ respectively at a low temperature condition. Moreover, those are 18℃-24.5℃ and 1.2℃-3.3℃ respectively at a high temperature condition. The experiments indicate that these results meet the thermal control demands of the ultraviolet imaging spectrometer. In conclusion, the management technique adopted in thermal control of the ultraviolet imaging spectrometer can effectively increase the energy efficiency and reduce the size of thermal control system, and can provide a reference for the thermal design of other space optical sensors.