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A reconfigurable arbitrary waveform generator using PWM modulation for ultrasound research
(Biomed Central LtdLondonInglaterra, 2013)
Waveform selection for electrical impedance tomography
(Institute of Electrical and Electronics Engineers, 2013-04)
Electrical Impedance Tomography (EIT) is a non– invasive method that can be used to estimate the electrical conductivity of the head tissues. It is based on the measurement of electric potential on the scalp generated by ...
Design of a Programmable Radar Controller ASIC on VHDL for a Modular Radar System
(IEEE, Institute of Electrical and Electronics Engineers, 2021)
The Jicamarca Radio Observatory (JRO), funded by the USA National Science Foundation (NSF), operates several radars for different applications, from the main radar, an incoherent scatter radar used mainly for ionospheric ...
Maximizing Energy Transference in PMSG with Arbitrary EMF Waveform
(Institute of Electrical and Electronics Engineers, 2014-09)
A control method is proposed with the objective of maximizing the energy transference in permanent magnet synchronous generators (PMSG). Such control is based on the evaluation of instantaneous power components. First, the ...
Identification of fractional-order transfer functions using exponentially modulated signals with arbitrary excitation waveforms
(2020-08-01)
This paper proposes a new identification method based on an exponential modulation scheme for the determination of the coefficients and exponents of a fractional-order transfer function. The proposed approach has a broader ...
A Rotor Position and Speed Observer for Permanent Magnet Motor with Non Sinusoidal EMF Waveform
(Institute of Electrical and Electronics Engineers, 2005-05)
A new nonlinear reduced-order observer to estimate the rotor speed and position for permanent-magnet motors, with arbitrary electromotive force (EMF) waveform, is presented. The proposed observer is suitable for the ...
Sistema para o estudo do limiar de percepção de corrente elétrica com forma de onda arbitrária.
(Universidade Federal de Minas GeraisUFMG, 2008-08-11)
During the 80's, an instrument to evaluate the psychophysical sensitivity using electric sinusoidal current stimulation had been proposed, which established a relation between fibers diameters and stimulus frequency: 5 Hz ...
Computational Method to Determine Reflected Ultrasonic Signals From Arbitrary-Geometry Targets
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2010)
A computational method based on the impulse response and on the discrete representation computational concept is proposed for the determination of the echo responses from arbitrary-geometry targets. It is supposed that ...