Research on systematic bus selection method of airborne flight control system

With the wide application of bus in aircraft airborne system, how to select bus efficiently is of great significance to improve the safety and reliability of flight control system. Under the background that there is no systematic method for bus selection of airborne flight control system in domestic and foreign public information, this paper proposes a systematic method for bus selection. Through the bus application of the typical aircraft type of the air-borne flight control system, the alternative bus of the airborne flight control system is preliminarily selected. For the airborne flight control system, military / civilian demand analysis, general demand analysis, special demand analysis and technical development demand analysis were carried out, and 34 demand indicators were obtained. The compliance analysis of the alternative bus is carried out according to 34 requirements indicators. If only one alter-native bus meets the above requirements, the alternative bus shall be used as the onboard flight control system bus. If there are multiple alternative buses meeting the above requirements, the choice shall be made through the analysis of the bus architecture of the flight control system.