空间相机电子设备热控系统设计

摘要：为了解决大功率的空间相机电子设备的散热问题，对其热控系统进行了设计与仿真分析。针对需要散热的电子元器件、印制板以及机箱采取了加导热片、表面发黑处理、涂导热填料等导热和辐射方式进行散热。根据电子设备的空间环境和采取的热控措施，应用TMG软件建立了热分析模型，对其热控系统进行了仿真分析，同时进行了电子元器件的结温计算。结果表明，电子设备的印制板的温度范围为35.6℃～45℃，电子元器件的结温温度范围为45.4℃～88.5℃，均低于降额热控温度指标。热控系统设计合理，所采取的热控措施能够满足设计要求。

Design for thermal control system of electronic equipment in space camera

The thermal control system of electronic equipment of a space camera was designed and simulated for resolving the problem of its heat dissipation.The thermal design of electronic components,Printed Circuit Boards(PCBs) and their chassis were researched with the approaches of conduction and radiation.Then,a simplified heat dissipation model was established and the effect of heat dissipation was calculated by taking an electronic component as an example.According to the space environment,structure characteris...