In this paper the problem of Fault Tolerant Control (FTC) in the framework of Discrete Event Systems (DES) modeled as automata is considered. The approach we follow is the so-called active approach in which the supervisor actively reacts to the detection of a malfunctioning component in order to eventually meet degraded control specifications. Starting from an appropriate model of the system, w...

The computing demands of applications coupled with the power wall problem in modern processors are expected to pave the way for heterogeneous computing platforms that are composed of a variety of processors and hardware accelerators. While current heterogeneous platform design analyses assess area, performance, and power, the tremendous increase in transient fault rates requires that reliabilit...

In recent decades, reliability in the presence of transient faults has been a significant problem. To mitigate the effects of transient faults, fault-tolerant techniques are proposed. However, validating the effectiveness of fault-tolerant techniques is another problem. In this paper, we present an original approach to evaluate the effectiveness of signature-monitoring mechanisms. The approach ...

Industry 4.0 and Cyber Physical Production Systems (CPPS) are often discussed and partially already sold. One important feature of CPPS is fault tolerance and as a consequence self-configuration and restart to increase Overall Equipment Effectiveness. To understand this challenge at first the state of the art of fault handling in industrial automated production systems (aPS) is discussed as a r...

[1] Using a model of a complex fault system, we examine the initiation, propagation, and termination of ruptures and their relationship to fault geometry and shaking hazard. We find concentrations of epicenters near fault step overs and ends; concentrations of terminations near fault ends; and persistent propagation directivity effects. Taking advantage of long sequences of dynamic events, we d...

The problem of fault detection and isolation in complex chemical/biochemical plants can be effectively addressed by a hierarchical strategy involving successive narrowing of the search space of potential faults. A bond graph network is one means of achieving a decomposition based on a separation of the physical domains such as mechanical, electrical, etc. In this work, bond graph theory is used...

Fault Detection in Linear Descriptor Systems Via Unknown Input PI Observer Hwan Seong Kim, Tae Kyeong Yeu, and Shigeyasu Kawaji Abstract: This paper deals with a fault detection algorithm for linear descriptor systems via unknown input PI observer. An unknown input PI observer is presented and its realization conditions is proposed by using the rank condition of system matrices. From the charac...

In this paper, we propose an optimal fault tolerant broadcasting algorithm which requires only n + 1 steps for an SIMD hypercube with up to n-1 faulty nodes. The basic idea of the proposed algorithm is first to find a fault-free subcube (CS) which contains the source node (S) such that each neighboring subcube of the subcube CS contains at least one fault. N e d , the message is broadcast along...

Combining a simplified on-board turbo-shaft model with sensor fault diagnostic logic, a model-based sensor fault diagnosis method is proposed. The existing fault diagnosis method for turbo-shaft engine key sensors is mainly based on a double redundancies technique, and this can't be satisfied in some occasions as lack of judgment. The simplified on-board model provides the analytical third chan...