Research Of The Complex Industry Process Control System Based On Multi-Agent Theory And Realization On PROFIBUS

With the rapid development of information technology, a deep change has taken placed in the industry process control field. The simple control theory used in this field for years can't meet the new requirement of the system any more due to the higher control target, and a more advanced theory need to be found to support the system with higher complexity, hi contrast with the slow progress of the control theory, the automatic control tool experienced the evolution of pneumatic meter control, centralize data control system and distributed control system has made a great achievement, that is the new net integrated and distributed control system-field bus control system. The purpose of this research is to find a way in which the control requirements can be combined with the progress of the control theory and control tools in order to promote the development of industry process control system.The theory of Multi- Agent, which has been quickly developed in recent years, Hs one of the most important branches of the DAI. Because of its abilities of adaptively, Autonomy and cooperation, the theory has superiority in process of solving complex problems and simulating complex system, hi this paper, a complex industry process control system based on Multi-Agent theory has been proposed and its realization on the field bus system also has been mentioned.At beginning of the paper, the necessaries and possibilities of the research were discussed based on the analysis of the characteristic of modern industry process control system. Then the frame of the complex industry process control system based on Multi-Agent theory for a broad senesce was designed. The single Agent model and the behavior rule for it were defined. Two different Agent colony structure, the distracted and hybrid structure, then were given in the essay.A compare was made between the complex industry process control system based on Multi-Agent theory and FCS from the technical characteristic to architectural characteristic in detail and the conclusion that FCS can act as the a generic system platform to realize the complex system was drawn based on thecompare. A strategy on how to meet various field buses' challenge was also given. A cording to the strategy,, PROFIBUS was chosen to be the realization platform in tliis research.As a representational case of the complex industry control system, a multi-variable system whose controlled objects were the temperature and level of the water was built up based on Multi-Agent theory. The system was divided into several different Agents with different control functions to accomplish the new control assignments. The arithmetic simulation research of major Agent was done after function was divided. At the last, both of the hardware and software plan how to realize the multi-variable system on PROFIBUS was given.The essay combines the theory research and practice together. Brought advanced theory from other related field into industry process control field, the paper pointed out a new way for the research of automatic control theory.ChenLing(Control Theory and Control Engineering)Supervised by Ding Jikai...