The 12 NaI(Tl)-detector gamma-ray spectrometry system (GSS) “Romashka”[1,2] has recently been equipped with a new computer controlled HVSys 16 channel high-voltage power supply with preselected single channel polarity [3] (Fig.1). In order to do some preliminary checks of the GSS chains’ characteristics, a single channel gamma-spectrometry tract was commissioned. It was consist of a single Roma...

The relation between the discrete time Lainiotis filter on the one side and the golden section and the Fibonacci sequence on the other is established. As far as the random walk system is concerned, the relation between the Lainiotis filter and the golden section is derived through the Riccati equation since the steady state estimation error covariance is related to the golden section. The relat...

Grid-synchronization stability (GSS) is an emerging issue of grid-tied voltage source converters (VSCs), which can be provoked by severe grid sags. Although a qualitative understanding the mechanism behind loss synchronization has been acquired in recent studies, analytical method for quantitative assessment GSS VSCs still missing. To bridge this gap, dedicated Lyapunov function analytically pr...