The advances of deep submicron VLSI technology pose new challenges in designing robust systems, which can in principle be addressed by approaches established in fault-tolerant distributed systems research. This paper is the first step in an attempt to develop a very robust high-precision clocking system for hardware designs like systemson-chip for critical applications. It is devoted to the des...

The measurement of the pressure in gas generator (GG) plays a decisive role closed-loop regulation flow solid ducted rocket ramjet (SDR). Therefore, fault detection and isolation (FDI) sensors is particularly significant. Especially GG with double feedback, there are issues such as less available data sensor transmission, which make FDI more difficult. In this paper, for firstly, “Consistency I...

Wafer warpage is common in microelectronics processing. Warped wafers can affect device performance, reliability and linewidth control in various processing steps. We proposed in this paper an in-situ fault detection technique for wafer warpage in lithography. Early detection will minimize cost and processing time. Based on first principle thermal modeling, we are able to detect warpage fault f...

This paper proposes a multi-level optimization strategy for the Negative Selection Algorithm (NSA) detectors, based on both the Genetic Algorithms (GA) and clonal selection principle. The NSA is a natural immune response-inspired pattern discrimination method. In our hierarchical optimization scheme, the NSA detectors are first optimized by the GA to occupy the maximal coverage of the nonself s...

This paper presents a new type of fault injection method based on intentional electromagnetic interference (IEMI), which causes information leakage from cryptographic devices without disrupting their operations or damaging their physical structures. The basic principle is to transmit a sinusoidal EM wave via a power/communication cable or an antenna. The IEMI-based fault injection method is per...

AbstractIn this paper, a robust sensor fault detection and isolation (FDI) method based on the unknown input observer (UIO) approach is presented. The basic principle of unknown input observers is to decouple disturbances from the state estimation error. A single full-order observer is designed to detect sensor faults in the presence of unknown inputs (disturbances). By doing so, we generate a ...

This paper focuses on the principle for designing reduced-order fuzzy-observer-based actuator fault reconstruction for a class of nonlinear systems. The problem addressed can be indicated as an approach for a kind of reduced-order fuzzy observer design with special gain matrix structure that depends on a given matching condition specification. Using the Lyapunov theory, the stability conditions...

Single-line-to-ground (SLG) fault arcs cause the intermittent over-voltages, leading to short circuits within large-scale area. In this paper, a flexible arc suppression device is proposed, which adopts zigzag grounding transformer, multi-terminal breakers and an isolation transformer regulate zero-sequence voltage. Principle of voltage regulation (ZVR) method presented. By carefully choosing s...

The on-board sensor fault detection and isolation (FDI) system is essential to guarantee the reliability and safety of an aero engine. In this paper, a novel online sequential extreme learning machine with memory principle (MOS-ELM) is proposed for detecting, isolating, and reconstructing the fault sensor signal of aero engines. In many practical online applications, the sequentially coming dat...

When conducting simulation for evaluating complex system reliability or availability, method of random sampling is applied to simulate fault occasion of complex system. Current research of fault sampling generally assumes maintenance activity restores systems to “good-as-new” and “bad-as-old” without considering “partly good” situation. However, system usually keeps its function through imperfe...