Abstract
Aircraft electronic subsystems usually adopt different communication protocols to meet the requirements of different communication data characteristics, such as ARINC 429, RS422, Time-Triggered Protocol and Avionics Full Duplex Switched Ethernet (AFDX), which increases the complexity as well as cost in system design and overwhelms bandwidth limitations. To solve it, the concept of a micro AFDX ( μAPDX) network is introduced, promising a new generation of an AFDX evolution network. In a μAFDX network, the simple equipment, such as a sensor/actuator, is designed as a μES and connects to the rest of the avionics AFDX network by an AFDX micro-switch ( μSwitch). As a result, the aircraft electronic network can evolve to be a unified AFDX network so that different aircraft electronic subsystems can seamlessly communicate with each other. To guarantee the quality-of-service of the AFDX evolution network, this paper computes the worst-case end-to-end delay for the flows by Network Calculus (NC). Besides, a configured AFDX example network is conducted to assess the performance of the AFDX evolution network.
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