An asymptotically stable direct adaptive fuzzy PI sliding modecontroller is proposed for a class of nonlinear uncertain systems. In contrast toother existing approaches of handling disturbances, the proposed approachdoes not require this bound to be known, only requiring that it exists.Moreover, a PI control structure is used to attenuate chattering. The approachis applied to stabilize an open-...

Using differential magneto-optical imaging, we address the question of mesoscopic inhomogeneity in underdoped Bi2Sr2CaCu2O8 (Bi-2212) single crystals. Among other features, it is shown that an anomalous temperature dependence of the penetration field and of the first order transition (FOT) field of the vortex lattice in such crystals can be understood as arising from inhomogeneity. The effect o...

This article describes an innovative measurement method enabling one to identify mechanical parameters of the respiratory tract. The method is compared with traditional techniques such as the forced oscillation technique (FOT), forced expiration technique, and the interrupter technique (IT). The developed characteristics of the method were examined by simulation and experiments. The results con...

The frequency dependence of effective resistance of the respiratory system was studied in seated and supine healthy subjects by use of a forced oscillation technique for the purpose of estimating the distribution of regional ventilation. Effective resistance determined at respective FRC levels of both these body postures fell with an increase in the breathing frequency, although the frequency d...

Using a modification of the forced oscillation technique we have measured respiratory resistance before and after nebulised salbutamol therapy in 32 wheezing children aged 7 months to 3 years 7 monts. 12 of the children were also studied in a total body plethysmograph. No child under 18 months of aged showed a greater than 5% fall in resistance or any fall in thoracic gas volume. In contrast, 1...

BACKGROUND AND OBJECTIVE Non-invasive techniques for measuring lung mechanics in infants are needed for a better understanding of lung growth and function, and to study the effects of prenatal factors on subsequent lung growth in healthy infants. The forced oscillation technique requires minimal cooperation from the individual but has rarely been used in infants. The study aims to assess the us...

Abstract: The online identification of power system dominated inter-area oscillations interface based on the incremental energy function method is proposed in this paper. The dominant inter-area oscillations interface can be obtained by calculating branch oscillation potential energy, which is tie-line concentrated by oscillations energy. To get the oscillation energy caused by the different me...

Recent advances in synchrophasor based oscillation monitoring algorithms have allowed engineers to detect oscillation issues that may have previously gone undetected. Although such an oscillation can be flagged and its oscillation shape can indicate the general vicinity of its source, low number of synchrophasors means that a specific generator or load that is the root cause of an oscillation c...