This paper addresses the problem of fault-tolerant robust supervisory control of discrete event systems (DES’s) with model uncertainty. Necessary and sufficient conditions for the existence of a fault-tolerant robust supervisor are derived. If the conditions are satisfied, then tolerable fault event sequences embedded in the system can be achieved. The results obtained are applied to design, mo...

In most arc fault circuit breakers, arc detection is accomplished through the signature analysis of remotely sensed branch currents, with high frequency spectral components being indicative of arcing. This paper presents an alternative approach based upon system identification. A model is assumed for the load on the distribution bus. This model is updated continuously by comparing measured volt...

High impedance fault (HIF) is a long standing problem which known by very complex phenomena, because of its distinctive characteristics asymmetry and nonlinearity behavior. Besides that, arc is the most serious problem which is mostly associated with high impedance fault, this arc is considered as a source of human life risks and fire hazardous, and additionally result in property damage. From ...

Leg 135 of the Ocean Drilling Program drilled and cored eight sites across the Lau Basin and adjacent Tonga Ridge to study the geological evolution of a backarc basin and adjacent oceanic arc and forearc. Six sites (Sites 834, 835, 836, 837, 838, and 839) were drilled within the Lau Basin, each within smaller and narrower (<10 km) north-south fault basins and collectively representing a broad e...

West Rota Volcano (WRV) is a recently discovered extinct submarine volcano in the southern Mariana Arc. It is large (25 km diameter base), shallow (up to 300 m below sealevel), and contains a large caldera (6 ¥ 10 km, with up to 1 km relief). The WRV lies near the northern termination of a major NNE-trending normal fault. This and a second, parallel fault just west of the volcano separate uplif...

Arc Fault Circuit Breaker (AFCB) technology promises to minimize the destruction of wiring elements in aircraft caused by potentially dangerous arcing events. While AFCB technology can enhance aircraft wiring protection, it creates significant difficulties for the aircraft maintainer who must find the barely visible arc-traces and repair the causes of these arc fault events. Intermittent faults...

Series arc faults cause the majority of household fires involving electrical failures or malfunctions. Low-fault current amplitude is reason for difficulties faced in implementing effective detection systems. The paper presents a novel and faulty line identification method. It can be easily used low-voltage Alternate Current (AC) network Non-Intrusive Load Monitoring (NILM). Unlike existing met...

The Hezar Igneous Complex (HIC) in the south-eastern part of Urumieh-Dokhtar magmatic arc, is the most prominent magmatic feature in the Kerman Porphyry Copper Belt, that understanding magmatic evolution of which may shed light on the tectonomagmatic development of this less-studied part of an important magmatic arc in the Neotethys realm. The HIC has been developed in the the intersection of t...

In this paper, a new fast and accurate method for fault detection, location, and classification on multi-terminal DC (MTDC) distribution networks connected to renewable energy and energy storages presented. MTDC networks develop due to some issues such as DC resources and loads expanding, and try to the power quality increasing. It is important to recognize the fault type and location in order ...