We focus on synthesis techniques for transforming existing fault-intolerant real-time programs to fault-tolerant programs that provide phased recovery. A fault-tolerant program is one that satisfies its safety and liveness specifications as well as timing constraints in the presence of faults. We argue that in many commonly considered programs (especially in mission-critical systems), when faul...

A lot of work and analysis has been done on regular fault-tolerant MINs but irregular MINS have the inherent concept of favorite memory module offering lower latency. The multipath nature of these networks provides a non-blocking operation. This work introduces a new network, named as MFT-2 network, which contributes fault-tolerance by providing dynamic full-access capability in the presence of...

With the development of computer technology, the architecture of computer system has been evolved into a highly complex nonlinear system structure. According to the theory of artificial intelligence, computer system can quickly reflect the basic features of the function in human beings’ brain by simulation. Based on the control principles of fuzzy neural network algorithm, the principle of slot...

The main contribution of this paper is the development of fault tolerant control for a wind energy conversion system (WECS) based on the stochastic piecewise affine (PWA) model. In this paper the normal and fault stochastic PWA models for WECS including multiple working points at different wind speeds are established. A reliable piecewise linear quadratic regulator state feedback is designed fo...

The reliability of a fault-tolerant circuit may be drastically impaired by the presence of maskable faults that never affect its functionality. Design for testability (DFT) techniques have to be applied to make maskable faults detectable. During the testing phase, traditional DFT schemes inhibit fault masking and/or activate additional observation/control paths through the circuit. Such schemes...

We investigated a real-valued Negative Selection Algorithm (NSA) for fault detection in man-in-the-loop aircraft operation. The detection algorithm uses body-axes angular rate sensory data exhibiting the normal flight behavior patterns, to generate probabilistically a set of fault detectors that can detect any abnormalities (including faults and damages) in the behavior pattern of the aircraft ...

In this paper, the problem of devising a fault-tolerant robust control for a class of nonlinear uncertain systems is investigated. Possible failures of the sensors measuring the state variables are considered, and robust measures are developed to identify the stability-vulnerable failures. Based on evaluation of the robust measures, a fault-tolerant robust control will switch itself among sever...

VAV system is a very complicated one in airconditionging systems, thus automatic control become the key of such a system. As necessary components in automatic control system, sensor has failure risk. It is so expensive that detect sensor fault by hardware redundancy in comfortable air-conditioning system. This paper presents an approach, Principal Component Analysis (PCA), to detect and identif...

A diagnosis points at a set of components whose abnormal behavior could explain why a system does not function as intended, and a set of diagnoses points at different such sets of components. It would be an advantage for repair technicians if it, as a complement to the diagnoses, was possible to exactly state which components that certainly are faulty, which that are only suspected to be faulty...

This paper discusses the fault features selection using principal component analysis and using multi-class support vector machine (MSVM) for bearing faults classification. The bearings vibration signal is obtained from experiment in accordance with the following conditions: normal bearing, bearing with inner race fault, bearing with outer race fault and bearings with balls fault. Statistical pa...