摘要:AbstractThis paper proposes a new design method for the fault-tolerant control of networked control systems, which consists of subsystems that are physically coupled and connected via a communication network. The control objective requires that the overall system follows a given trajectory. It is satisfied if all subsystems follow specified local trajectories. If a subsystem is affected by a fault, it cannot follow its trajectory any longer and thus causes the control objective to be violated. This paper concerns actuator failures that make a local controller reconfiguration impossible. The new idea is to design cooperative fault-tolerant controllers in which the non-faulty subsystems must follow new local trajectories in order to compensate the deviant behaviour of the faulty subsystem. As no global coordinator exists in the networked system, the subsystems use communication-based two-degrees of freedom controllers to ensure the trajectory tracking. The applicability of this method is demonstrated in an experiment.
关键词:KeywordsFault-tolerant systemsinterconnected systemsfeedforward control