This paper presents a fault detection, isolation and reconstruction (FDIR) mechanism for the fault-tolerant system. A self-detection component is introduced to the normal dual-channel redundant system, and the component can detect the outputs of the behavior model and the nominal system model. The control strategy is reconfigured by using the differences between the outputs of the behavior mode...

ÐWe present a novel data organization for disk arraysÐSegmented Information Dispersal (SID). SID provides protection against disk failures while ensuring that the reconstruction of the missing data requires only relatively small contiguous accesses to the available disks. SID has a number of properties that make it an attractive solution for fault-tolerant video servers. Under fault-free condit...

Maximum availability is essential in the power generation and transmission sector. Faults in transmission lines, substations etc. can cause very serious damage. Therefore it is important to have means to examine each type of fault and the relay performance for different point on wave instant in detail using a relay testing simulator, in order to detect malfunction of the relay. “Point on wave f...

A method of determining model dimensions (number of principal components) which maximize the sensitivity of fault detection was studied. In this paper it is shown that the sensitivity of PCA-based fault detection generally depends on the number of principal components. Most of the existing methods give only one value as a recommended number of components, and so sometimes the sensitivity is poo...

Abstract: In this paper, the control scheme of a distributed high-speed generator system with a total amount of 12 generators and nominal generator speed of 7000 min−1 is studied. Specifically, a fault tolerant control (FTC) scheme is proposed to keep the turbine in operation in the presence of up to four simultaneous generator faults. The proposed controller structure consists of two layers: T...

Computer 3D reconstruction consisting of reconstruction of 3D point clouds and images plays an important role in computer graphics, computer image processing and computer vision research. Image based 3D reconstruction includes reconstruction of single image and multiple images. Compared to obtain 3D mode by modeling software or scan tester traditionally, image-based 3D reconstruction is feature...

Abstract. X-ray tomographic image reconstruction consists of determining an object function from its projections. In many applications such as non-destructive testing, we look for a fault region (air) in a homogeneous, known background (metal). The image reconstruction problem then becomes the determination of the shape of the default region. Two approaches can be used: modeling the image as a ...

This paper focuses on observer based fault reconstruction for a class of nonlinear uncertain systems with Lipschitz nonlinearities. An adaptive-gain Super-Twisting (STW) observer is developed for observing the system states, where the adaptive law compensates the uncertainty in parameters. The inherent equivalent output error injection feature of STW algorithm is then used to reconstruct the fa...