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16 articles for “permanent magnet”
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Review ArticleOpen accessPhrase in the titlePermanent Magnetic FluidsNicolae Petrescu, Florian Ion Tiberiu PetrescuA team of researchers at the University of Massachusetts Amherst has accidentally obtained the first magnetized permanent liquid in the world, the droplets of this liquid moving in unison and able to associate in different forms while being manipulated exterior by means of a magnet, according to a new study published in the latest issue of the journal Science, reports … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 3 · 22 Aug 2019 · 8,842 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleOptimized High Frequency Signal Injection Based Permanent Magnet Synchronous Motor Rotor Position Estimation Applied to Washing MachinesOlfa Bel Hadj Brahim Kechiche, Houda Ben Attia Sethom, Hafedh Sammoud, Ilhem Slama BelkhodjaProblem statement: This study investigates a novel optimized scheme of a High Frequency Signal Injection (HFSI) based sensor less technique in order to carry out a precise and robust rotor position error estimation of a Permanent Magnet Synchronous Motor (PMSM) drive designed for washing machines. The study was carried out for standstill condition, where precise position information was required for … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 3 · 29 Sep 2011 · 9,514 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleOpen Circuit Field Distribution and Induced Voltage of a Cylindrical Permanent Magnet Linear GeneratorWijono, Hamzah ArofThis paper deals with the analytical computation of the magnetic field of a cylindrical permanent magnet linear generator. It offers an alternative solution to the magnetic field problem. A new approach to solve Poisson equation using Struve function is introduced and it offers a simple but accurate analytical estimation to the calculation of the open circuit flux density and induced … …American Journal of Applied Sciences, Vol. 4, Issue 11 · 30 Nov 2007 · 7,191 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleSimplified Modeling, Analysis and Simulation of Permanent Magnet Brushless Direct Current Motors for Sensorless OperationE. Kaliappan, C. ChellamuthuProblem statement: In this study, a simplified modeling and experimental analysis of Permanent Magnet Brushless DC (PMBLDC) motors for Sensorless operation using MATLAB/SIMULINK. This model provides a mechanism for monitoring and controlling the voltage, current, speed and torque response. Approach: BLDC motor is modeled as sub-blocks. The inverter and switching function are implemented as S-function builder block. The Sensorless scheme … …American Journal of Applied Sciences, Vol. 9, Issue 7 · 16 May 2012 · 7,643 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleAdaptive Controllers for Permanent Magnet Brushless DC Motor Drive System using Adaptive-Network-based Fuzzy Interference SystemV.M. Varatharaju, Badrilal Mathur, UdhayakumarProblem statement: The tuning methodology for the parameters of adaptive speed controller causes a transient deviation of the response from the set reference following variation in load torque in a permanent-magnet brushless DC (BLDC) motor drive system. Approach: This study develops a mathematical model of the BLDC drive system, firstly. Secondly, discusses a design of the closed loop drive system … …American Journal of Applied Sciences, Vol. 8, Issue 8 · 19 Jul 2011 · 6,941 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleRobust Position Controller for a Permanent Magnet Synchronous ActuatorChams-Eddine Feraga, Abdelkrim Moussaoui, Abdallah Bouldjedri, Ali YousfiProblem statement: The present study investigated with the application of a robust control scheme to improve the performance of a simplified indirect field oriented for small power surface mounted Permanent Magnet (PM) synchronous actuators. Approach: The suggested model was implemented using a simplified state feedback with no need to measure the current values to compute the control algorithm. Results: The … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 7,673 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleMulticore Based Open Loop Motor Controller Embedded System for Permanent Magnet Direct Current MotorK. Baskaran, K.S. Vijula GraceProblem statement: In an advanced electronics world most of the applications are developed by microcontroller based embedded system. Approach: Multicore processor based motor controller was presented to improve the processing speed of the controller and improve the efficiency of the motor by maintaining constant speed. It was based on the combination of Cortex processor (Software core) and Field Programmable Gate … …American Journal of Applied Sciences, Vol. 9, Issue 6 · 22 Mar 2012 · 7,035 accessesView PDFCite
Technical ReportOpen accessIn the abstractAnalysis of Magnetic Wheel Adhesion Force for Climbing RobotHaydn Welch, Shyamal MondalThis paper describes the aim of designing, building and testing magnetic wheel based an autonomous climbing robot, for use in conjunction with Non-Destructive Testing (NDT) inspection on vertical towers. Through extensive review of previous generations of climbing robot, a hybrid wheel and permanent magnetic adhesion system has been designed and discussed in this paper. Using mathematical modelling and Finite Element … …Journal of Mechatronics and Robotics, Vol. 3, Issue 1 · 31 Aug 2019 · 8,283 accessesView PDFCite
Research ArticleOpen accessIn the abstractDevelopment of a Magnetorheological Finishing Machine for Small-Bore Part of Irregular Shape and Experimental StudyWang Tingzhang, Chen Mingjun, Liu Henan, Xu JiangMagnetorheological finishing machine tool with small ball-end permanent-magnet polishing head is proposed as a method to solve the problem that small-bore parts of irregular shape with small curvature radius concave surface cannot be polished by traditional magnetorheological finishing machine tool. The four-axis linkage magnetorheological finishing machine tool with modular open numerical system and easy-operating man-machine interactive interface is developed. Then … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 3 · 26 Jun 2015 · 7,693 accessesView PDFCite
Research ArticleOpen accessIn the abstractGenetic Based Plus Integral Controller for PMBLDC Motor Control using Resonant Pole InverterMuruganantham, PalaniPermanent Magnet Brushless DC (PMBLDC) motor drives are increasingly popular in industrial applications due to rapid progress of technologies in power electronics and the growing demand for energy saving. The increasing demand of energy saving from society is the external force for the development of PMBLDC motor drives. It is however driven by a hard-switching Pulse Width Modulation (PWM) inverter, … …American Journal of Applied Sciences, Vol. 9, Issue 12 · 5 Jan 2013 · 8,146 accessesView PDFCite