A Proposed Architecture for a Fault Tolerant Multi Agents System Using Extern Agents

This paper proposes an approach that makes it possible to have a robust multi agents system. Generally, a multi agents system has a mission called the global goal that it has to achieve. This global goal can be decomposed into different sub goals. We define two types of goals: the simple sub goal realized by only one agent and the complex sub goal achieved by more than one agent. The agents that realize simple goals formed one class, and they are replicated to assure fault tolerance. Each group of agents in cooperation formed one group called the complex goal class; it uses the exception handling technique to treat the errors. We use extern agents to manage the classes formed and to control the whole system.