Abstract:

In aviation and low-voltage power systems, many signals are transmitted and processed through interface circuits. In recent years, the widespread application of domestically produced devices and the urgency of production design tasks have put forward new requirements for interface circuit simulation. Focusing on the specific domain modeling requirements of model-based system engineering (MBSE) in the aviation and industrial fields of China, a current signal output circuit is designed, Saber software is used to complete the "device circuit" level by level modeling and simulation, and the corresponding hardware circuits is combined to conduct theoretical, simulation and experimental comparisons of static function and dynamic performance. The results show that the modeling method can effectively integrate the speed and accuracy of modeling and simulation, which is beneficial for optimizing the interface circuit design process and improving the degree of digitization. It can provide the model support for the model-based system engineering in the aviation and industrial fields of China.

Key words: interface circuit, model-based system engineering(MBSE), level by level modeling, functional and performance verification