Importance measures are widely used in reliability engineering. To support system reliability optimization, this paper studies the relationship and changing characteristics of the Birnbaum importance measures (BMs) for different components in binary coherent systems. First, the probabilistic meaning of BM and a modeling method for binary coherent system based on Bayesian network (BN) are presen...

Thin-film lithium niobate on insulator (LNOI) has recently emerged as a promising platform for high-speed optical communication devices. For practical applications, an efficient, polarization-insensitive, misalignment-tolerant and broadband fiber-to-chip coupler is necessary. In this letter, we present edge based trident spot-size convertor (SSC). Experiment shows 1.18/1.10 dB per facet low los...

High energy photons can be generated via inverse Compton scattering (ICS) in the collision between energetic electrons and intense laser pulse. The development of plasma accelerators promises compact all-optical gamma-ray sources by colliding from wakefield to its high-power driving pulse reflected a mirror. However, law optical focusing hinders realization both high photon yield monochromatic ...

great effect of three way catalytic convertor (twc) performance on oxygen sensor output voltage has made the sensor (located after catalyst) as the main signal in almost all today’s twc monitoring algorithms. in this paper output voltage of nonlinear oxygen sensor is estimated using a nonlinear autoregressive with exogenous inputs (narx) model. the estimation uses ecu calculated exhaust gas flo...

Microgrids need control strategies to achieve maximum performance. An appropriate strategy should have high performance in unbalanced conditions addition normal conditions. Today, the use of microgrids, with a variety power sources, including solar, wind, diesel, energy storage sources increase capability distribution grid has made significant progress. However, controlling and managing their e...

In this study, two types of multilevel convertors, cascaded multilevel inverter with separate DC sources and diode clamped multilevel inverter with common DC source are modeled and compared in the case of feeding of an induction motor. Here, SHEPWM technique is used as the switching strategy. Also a new variable torque feedback control on modulation index is presented, to preserve the induction...