M. Abdesh S. K. Khan

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This paper presents the practical implementation of a novel fault diagnostic and protection scheme for the interior permanent-magnet (IPM) synchronous motors using wavelet packet transform (WPT) and artificial neural network. In the proposed technique, the line currents of different faulted and normal conditions of the IPM motor are preprocessed by the WPT.(More)
This paper presents the real-time implementation of a novel wavelet-based multiresolution proportional-integral-derivative (PID) controller for the accurate speed control of the interior permanent-magnet (IPM) synchronous motor drives under system uncertainties. In the proposed wavelet-based PID controller, the discrete wavelet transform is used to(More)
The radio frequency identification system (RFID) is becoming one of the most popular system in wireless technologies. The UHF RFID tag emulator is a part of RFID testing tools. The UHF RFID tag emulator would be imitating the behavior of RFID Tag. The UHF RFID tag emulator (860 MHz to 960 MHz) is aimed for testing the RFID systems and also acts as a(More)
A temperature-dependent RF large-signal model is constructed by modifying the Verilog-A code of the Angelov model for unique characteristics of GaN MOSHFETs. Different from the previously reported EEHEMT-based model, the present electro-thermal model can fit the temperature effects on threshold shift and transconductance degradation, the drain current in(More)
The development of an in situ efficiency estimation technique is a challenging task where the lowest level of intrusion and the highest possible accuracy are required. In this paper, a new algorithm is discussed for the in situ efficiency estimation of induction machines under unbalanced power supplies. Prior work in the literature has concentrated on(More)
This paper presents a hybrid neuro-wavelet scheme for online tuning of a wavelet-based multiresolution proportional integral derivative (MRPID) controller in real time for precise speed control of an interior permanent-magnet synchronous motor (IPMSM) drive system under system uncertainties. In the proposed wavelet-based MRPID controller, the discrete(More)
In this work, a novel wavelet packet transform (WPT) based algorithm is developed for the on-line protection of a three-phase interior permanent magnet (IPM) motor fed from a sinusoidal pulse width modulated voltage source inverter (PWM-VSI). The proposed algorithm is implemented and tested on-line using the ds1102 digital signal processor board for(More)
Of late, chaos based cryptography has attracted significant attraction of the researchers due to their simplicity of implementation, complex behavior and extreme sensitivity to initial conditions. In this paper an efficient technique to introduce security at physical (PHY) layer is proposed in 802.11i design to provide security in medium access control.(More)
Extended-spectrum β-lactamases (ESBLs) are plasmid-mediated enzymes that confer resistance to all penicillins and cephalosporins, including the sulbactam and clavulanic acid combinations and monobactams such as aztreonam1. ESBLs are most commonly detected in Klebsiella pneumoniae, which is an opportunistic pathogen associated with severe infections in(More)