Abstract: The active structural acoustic control of enclosure is investigated based on the distributed cooperative control method of multi-agent system (MAS). The coordination problems between the complexity of overall control architecture and intelligent units are discussed by the method. A rectangular enclosure involving two simply supported flexible plates is considered. The characteristics of the coupled system with the two flexible plates are described by the modal superposition method. The feasibility of applying MAS to structural-acoustic coupled system is analyzed. The noise control problem is decomposed into several layers, and sub-controller agents for local control problems are defined as well as their operating regimes and inner functions. All sub-controller agents are coupled into an integral MAS by supervisor-like and competitive coordination mechanisms. The simulation results indicate that the better control performances are attained. At the same time, the active structural acoustic control system has the advantages of MAS, such as parallelism, scalability and robustness.

Key words: Active structural acoustic control, Agent, Coordination mechanism, Enclosure, Multi-agent system