in this paper, the effects of reflected waves of the facets on the internal optical intensity of semiconductor dfb lasers are investigated. the uniformity of optical intensity along the cavity length is evaluated with flatness parameter. the dependence of this parameter on coupling coefficient, reflectivity and grating phase at the facets is also studied. this investigation shows that in some s...

The efficiency of an IPMSM motor is influenced by the operating point machine. Conventional approaches to generate measured maps may be too expensive use in some situations, thus it often replaced simpler variants based on parametric models. A promising approach combine model-based with online parameter identification methods which would allow following changes parameters. However, such also re...