We investigate the relationship between the state assignment of the sequential machine and the observability of a faulty internal state on the primary outputs for faults that result in unidirectional errors. We state sufficient conditions for faulty states to propagate to primary outputs in one clock cycle and use them to derive the constraints that must be imposed on the state assignment of th...

of the 5,655 accidents with casualty that had occurred during 1973 in teheran, 4,936 or 87. 3% were caused by the negligence on the part of the drivers. the most accident producing driving middle-aged men of 30- 39 years, who had recently acquired driving permit and were wage earners as drivers in the city of tehran. alcohol intoxication as the cause of the accident had been recorded in only o....

in this paper, the fuzzy system has been used for fault detection and diagnosis of a yeast fermentation bioreactor based on measurements corrupted by noise. in one case, parameters of membership functions are selected in a conventional manner. in another case, using certainty factors between normal and faulty conditions the optimal values of these parameters have been obtained through the genet...

Owing to the use of Permanent Magnet Synchronous Motor (PMSM) widely in Electrical Vehicles (EVs), mandatory existence rotor angle sensor its control algorithm, higher reliability resolver than other instance, and eventually, significant effect errors on system stability, comparing two winding configurations is regarded analytically numerically following study. Firstly, employed assessment mode...

In this study, diagnosis of a 300-MW combined cycle power plant under faulty conditions was performed using a thermoeconomic method called modified productive structure analysis. The malfunction and dysfunction, unit cost of irreversibility and lost cost flow rate for each component were calculated for the cases of pre-fixed malfunction and the reference conditions. A commercial simulating soft...

Wind power stations, many located in remote areas; so they are characterized by weak grids and are often submitted to power system disturbance like faults. In this paper, the behaviour of a wind energy conversion system that uses the control of the rotor side converter (RSC) by three different methods under faulty conditions is presented. The behaviour of these systems during a grid failure is ...

condition monitoring of bldc motors due to their important applications is gaining more and more significance. rotor eccentricity is one of the most important sources of faults in these motors. up to now, detection methods of this fault under nonstationary conditions are limited to complicated and time-consuming methods using wavelets and cohen class algorithms which are difficult to implement ...