The Study Of Distributed Simulation Environment For Integrated Fire/Flight/Propulsion Control System

Integrated Fire/Flight/Propulsion Control System(IFFPCS) is one of the research emphases in the field of Aviation. Adistributed simulation environment, as a design and experiment tool for study of IFFPCS, is needed urgently. Many factors have made the environment development more diffcult, such as distributed sites of research members, complicated research content, heterongeneous gardware and software, and restricted related reference literature etc.. To overcome these difficulties, an Integrated Control Distributed Simulation Enwironment(ICDSE) is studied in this thesis.With the transdiscipline feature, the thesis has improved the inlet regulating law with angle of attacking brought into inlet ramp regulating system, which gives coordination of regulation of inlet and flight control system, and is able to inprove performance of flight. The ghesis also analyzes and designs vectored nozzle control system. It makes mathematic model of a typical airplane system become suitable to the study of IFFPCS.Then, we proposed a hierarchiaacal integration method for designing the longitudinal IFFPCS, with the purpose to reach minimum weapon aiming error. Based on ralationships among components of propulsion system, model of propulsion system control integration is given. The model is intrgrated with flight control system. Their integrated model is integrated with fire control system again. Then fire control system, flight control system and propulsion control system, whch are conventionally designed independently, are connected together through integrated fire/flight/propulsion coupler. Structure of IFFPCS is built, which lays a foundation for development of ICDSE.Hierarchical distribution model of IFFPCS is put forward and structure of ICDSE which includes softwaare structure and hardware structure is designed.New concepts of distributed simulation computing and local real-timereplay are presented specifically for overcoming the difficulty of remote distributed research members. Through frame synchronization mechanism during distributed simulation computing, all sub-modules in IFFPCS are set with same simulation step, and they must begin new calculation only after a frame synchronism signal is receive. Inthis way, executing paces of all sub-modules are regulated, and right causality among sub-modules under distributed environment is guaranteed. On the basis of distributed simulation computing, local real-time replay provides new ideas for dynamic debugging of simulation software and physical entity and study of distributed real-time simulation.In order to solve the complexity of IFFPCS and its special demands for computer simulation environment, this thesis proposes to use middleware as the core of ICDSE. Middleware is state-of-the-art thchnipue of distributed computing. Main Integreted Control Distributed Simulation Middlewares(ICCSSMs) such as communication middleware, message middleware, system manage middleware, and integration middleware are put forward and analyzed. They are the most important parts of ICDSE. Middleware technipue makes ICDSE have advantage of being convenient to program, having good inheritance of gardware and software, and being suitable to extensive heterogeneous environment etc..