一种电子负载模拟器方案设计

A design of electronic load simulator

摘要:

为了更加便捷的开展航天器各项大型试验和测试工作，研制了一种电子负载模拟器。电子负载模拟器能够模拟航天器电气系统的压力传感器、电磁阀、自锁阀、温度传感器、火工品等负载的电压和电流信号特性，并完成负载电压的采集和负载通电时间的统计，同时将所有功能模块集成到一个标准机箱中，所有电气信号接口通过若干接插件汇总对外进行连接，各功能模块通过上位机软件进行通信和控制。电子负载模拟器参与了某型号航天器的模飞测试工作，测试数据准确无误且性能稳定，既验证了上游驱动电路的电气匹配特性，又节省了梳理负载电缆和插拔接插件的繁琐性，同时也降低了人员频繁插拔接插件的出错概率。

Abstract:

An electronic load simulator is developed in order to test the aerocraft conveniently.Aerocraft sensor voltage signal of pressure and temperature can be simulated.The voltage and current signal of valve and detonator can also be simulated.Correlative voltage signal and time signal can be gathered.All function module is compositive in an equipment.All external interface of electric signal is collected in some plugs.All the process is controled. The electronic load simulator is used in testing the aerocraft.Testing data is exact.Electric matching characteristic of driving circuit is validated.The process of connecting numerous cables and plugs is predigested.At the same time,the probability of false connecting is reduced greatly.