This paper introduces application of multi degree of freedom fuzzy(MDOFF) controller in permanent magnet (PM)drive system. The drive system model is developed for FO control. Simulation of the system is carried out to predict the performance at NL and under load,. The results indicate that application of MDOFF controller is effective for sensorless PM drive system. Keywords—Sensorless FO contro...

In this paper, a very efficient method, called single matrix block analyzer (SMBA), has been developed to determine relative permeability and capillary pressure curves from spontaneous imbibition (SI) data. SMBA mimics realistically the SI tests by appropriate boundary conditions modeling. In the proposed method, a cuboid with an identical core plug height is considered. The equal dimensions of...

a simple and rapid stability indicating method based on capillary zone electrophoresis has been developed and validated for the analysis of buserelin (bus). the best separations were achieved by using a bare fused silica capillary (75 m i.d.; 65.5 cm total, 57.0 cm effective length), phosphate buffer (ph = 3.00; 26.4 mm), at 35 °c. the sample was hydrodynamically injected at 50 mbar for 5 seco...

Switched reluctance motor (SRM) drive has a remarkable characteristic, high efficiency, and good controllability, which makes it attractive for high-speed applications. In this paper, the basic control strategy for a switched reluctance motor drive circuit is explained and then three different resonant discharge topologies for SRM drive circuit are proposed. Due to resonantly discharging of exc...

Background: Hemoglobinopathies are the commonest single gene disorder in human that affect hemoglobin production and function that occur when mutations alter the amino acid sequence of globin chains. The purpose of the present study was to evaluate the prevalence of hemoglobninopathies detected by capillary electrophoresis method in individuals referred to Masjed-Soleiman health centers by capi...

Background Hemangiomas, usually, present at the first few Hemangiomas, usually, present at the first few months of life and are the most common benign tumor in children. There are various therapeutic methods for hemangioma. Capillary hemangioma is a type of hemangiomas. The steps of treatment of a child with capillary hemangioma in Taleghani Hospital of Gorgan, Iran, are reported. Case re...

The purpose of this paper is to introduce a different type of converter circuit used to drive switched reluctance motors. It continues with detailed discussion on the resonant converter armed at minimizing or eliminating the transistors switching losses. Finally the drive has been tested on a disc-type reluctance motor for the perfomance and functionality.

WC-Co cutting tools performance under demanding conditions largely depend on the efficiency of fluid, mainly its ability to remove heat and reduce friction, both highly dependent wettability drop spreading behaviour fluid. In this context, study focuses machining fluid water in WC-10 wt%Co surface. Contact angles were experimentally measured then used for performing numerical simulations by lev...

Intelligence of machine tools is not conditioned only by application of modern control systems, sensors and other active components. The application of new methods of modelling, that is intelligent design of machine tools and to purposefully predict its properties, is also very effective. Machine tool development for high speed and highly precise cutting demands employment of advanced simulatio...

in direct torque control, the selection of an applied voltage vector is based on the measuredparameters at the beginning of the sampling period. the delay between the measurement and the application of the voltage vector is the origin of an extra torque ripple. in this paper, a new predictive controller is proposed for compensating this delay and reducing the torque ripple. the stator current i...