针对测试信号种类繁多,属性复杂的问题,充分发挥了STD(Signal and Test Definition)标准的扩展机制,分别研究了基于STD标准的静态信号模型和动态信号模型。并应用上述模型,建立了带有电流限属性的三相交流电信号模型,解决了三相交流电信号的使用问题,同时为自定义信号的建模提供思路。 Aiming at the variety of testing signals and complicated attributes, the extension mechanism of STD (Signal and Test Definition) standard is fully utilized. The static signal model and dynamic signal model based on STD standard are studied respectively. With the above model, a three-phase AC signal model with current limit is established, which solves the problem of using three-phase AC signals and provides ideas for the modeling of custom signals.