“Fault-tolerant control of continuous-variable system: Reconfiguration strategy for the three tanks system”
Abstract — Fault-tolerant or reconfigurable control systems are generally based on a nominal control law related to fault detection and isolation. This paper describes a fault-tolerant control (FTC) system design technique for a non linear system detectable by observation. The redundant hardware is used to compensate for faults. The method outlined in this paper relies on the system behavior of all the components involved. During the reconfiguration process, the forward controls are maintained and the modifications are performed only in the feedback. The switching function also serves as the fault indicator. It is demonstrated that the transient periods are minimal and the performance of the reconfigured system remains the same.