Design and Implementation of Satellite General Equivalent Device

The satellite equivalent device is used to check the electrical interface of satellite ground power supply and distribution (PSD) test system and verify its functional correctness. Previous equivalent device is usually customized for particular satellite. A general equivalent device for satellite was designed and developed in this paper. Firstly, the design requirements and specifications of general equivalent device were proposed based on analyzing multiple satellite equivalent devices. Secondly, the hardware design was introduced, in which the input signal detection modules and output signal modules were designed independently. Then the software design was introduced, in which set of input/output mapping relation was flexible, and XML file was used to store the configuration information. The general equivalent device has been used in the self-test of satellite PSD test system, it is proved to be generic and flexible.