Simulation Model of a High-Speed Token-Passing Bus for Avionics Applications.

Abstract : There are many factors of bus token-passing protocols that influence the overall performance of the protocol. Extensive analysis is needed to design a protocol with performance that can meet the requirements for a next-generation aviation electronics (avionics) data bus. The purpose of this thesis was to develop and test a token-passing bus digital simulation model that could be used to conduct this analysis. This thesis developed and validated a model for simulating bus token-passing protocols for avionics applications. Two algorithms were designed that reflected the timing and operation of a distributed control token-passing protocol and a centralized control token-passing protocol. The algorithms were incorporated into an overall simulation model program which included simulation control, data collection, and data analysis functions. The simulation model program was written in the Pascal computer programming language. Keywords: Computer communications; Local area networks.