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This work focuses on a general class of nonlinear process systems controlled by a two-tier networked control system integrating a local control system using continuous sensing/actuation with a networked control system using asynchronous sensing/actuation. To deal with control actuator faults that may occur in the closed-loop system and eliminate the ability of the two-tier networked control system...
In this work, we introduce a two-tier control architecture for nonlinear process systems with both continuous and asynchronous sensing and/or actuation. This class of systems arises naturally in the context of process control systems based on hybrid communication networks (i.e, point-to-point wired links integrated with networked wired/wireless communication) and utilizing multiple heterogeneous measurements...
The present work proposes a method for data-based fault diagnosis that takes into account the design of the feedback control law in order to perform fault detection and isolation. This method allows isolating certain faults in a specifically structured closed-loop system using only a data-based approach. This is achieved through the design of appropriate nonlinear control laws that allow isolating...
Accurate detection and isolation of faults is a critical component of a reliable fault-tolerant control system. It has been demonstrated that using a nonlinear controller to enforce a specific structure in the closed-loop system allows data-based detection and isolation of certain faults that would otherwise not be isolable using data-based techniques without the necessary closed-loop system structure...
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