真空环境下航天器电缆温升模型试验研究

航天器电缆温度过高会造成电缆的损毁，影响整星供电安全。文章中设计并进行了真空环境下电缆温升试验。参考电缆的辐射温升公式对试验数据进行了分析，并采用最小二乘法对试验数据进行辨识得到了电缆温升模型。仿真表明模型预计电缆温度与试验温度相差较小，可应用于航天器电缆网的优化设计、航天器在轨负载平衡以及航天器功率电缆的反时限保护。

The temperature rise model of spacecraft cables in vacuum environment

High temperature might damage the spacecraft cables and even harm the safety of the spacecraft power supply.To build a temperature rise model of the spacecraft cable,a temperature test for cables was designed and carried out.The test data were analyzed according to the radiation law of the cables,and the model of describing the temperature rise of the cables was obtained by the least squares method.The model,validated by the simulation with its predicted temperature being very close to the measured temperature in the test,can be used in the optimization design of the spacecraft cable network,the balance of the payload of the spacecraft in orbit,and the inverse-time protection of the spacecraft cables.