Accurate reactive power sharing is one of the main issues in isolated microgrids to avoid circulating currents and overloading small distributed generation (DG) units. A simple enhanced method for improving among parallel-connected DG systems an microgrid was proposed. The proposed uses a compensator term with integral action minimize power-sharing error internally without any need communicatio...

The authors present a new method to compensate for the spatially variant detector response in single photon emission computed tomography (SPECT) with varying focal-length fan-beam (VFF) geometry. In this method, the deblurred projection is explicitly expressed as an integral of the collimator blurred data and the fully calibrated system kernel matrix with certain transforms. It needs a little m...

Energy management in power systems is a thorny optimization problem. With the sizes of rising, centralized methods are restricted by their complexities communications, while distributed have emerged as powerful tool for dealing with increasingly complex systems. However, convergence rates some widely used methods, such standard alternating direction method multipliers (ADMM), still room improve...

Comparing with the serial ones, parallel manipulators have potential advantages in terms of high stiffness, accuracy and speed (Merlet, 2001). Especially the high accuracy and speed performances make the parallel manipulators widely applied to the following fields, like the pick-and-place operation in food, medicine, electronic industry and so on. At present, the key issues are the ways to meet...

Abstract: In this paper a novel kinematic model is proposed where the transformation between the robot posture and the system state is bijective. Two control approaches are proposed to solve the tracking problem. One approach is based on the Takagi-Sugeno fuzzy model where a parallel distributed compensation control is used. The alternative approach is to use Lyapunov stability analysis to cons...

Over the past two decades, there has been a rapidly growing interest in approximating a nonlinear system by a Takagi-Sugeno (T-S) fuzzy model (Takagi & Sugeno, 1985). In general, this model is represented by using a set of fuzzy rules to describe a global nonlinear system in terms of a set of local linear models which are smoothly connected by fuzzy membership functions. Based on the T-S fuzzy ...

Personal data represent the e-history of a person and are of great significance to the person, but they are essentially produced and governed by various distributed services and there lacks a global and centralized view. In recent years, researchers pay attention to Personal Data Cloud (PDC) which aggregates the heterogeneous personal data scattered in different clouds into one cloud, so that a...

a parallel hybrid system of hmm and gmm modeling techniques was implemented and used in a telephony speaker verification and identification system. spectral subtraction and weighted projection measure were used to render this system more robust against additional noise. cepstral mean subtraction method was also applied for the compensation of convolution noise due to transmission channel degrad...