Technical research of real-time simulation system interface expansion of airborne utility system management

Abstract

The hardware in the loop is a necessary link during the development of the complex system based on V&V processes. The airborne utility system is featured by numerous types of interfaces, large quantities, and complicated interconnection. During the hardware in the loop test, it is impossible to effectively carry out a large numbers of synchronous simulation, due to the restriction of the simulation equipment resource. This paper proposes an FPGA-based interface expansion technology, and the core idea is to reuse and recombine the signals. The specific steps are as follows: implement the signal reuse algorithm by the FPGA in the interface module, complete the restoration of the recombined signals according to the synchronization signal and the address signal of the system and transmit the control interface command to the device under test. The simulation results show that the real-time simulation system interface expansion technology proposed in this paper can realize the synchronous simulation function of large-scale signal with a small number of simulation channels, and effectively increase the number of interfaces in the real-time simulation system.