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Year: 2013, Volume: 13, Number: 2
... two solid phase bond [21]. The property of welding joint components with either similar or different compositions. depends upon [1] the control of vibration frequency, The applications of OFW fall into a wide range of industries vibration amplitude and welding cycle. [1-12], due to its high welding quality, ...
Year: 2012, Volume: 12, Number: 2
... MIMO) controllers damping control technique considers the problem of with the least Frobenius norm feedback gain matrix. The assigning the eigenvalues associated with inter-area modes simulation results of frequency and time domains verify the into a specified region in the left-half plane (LHP). By effectiveness of the wide-area damping controller for various operating conditions. ...
Year: 2012, Volume: 12, Number: 4
... using the EOG technology, the patient's needs, represented by the desired acquisition system. The proposed methods are based on Hilbert transform and envelope detection of the low frequency word, phrase and/or ideogram (selected by using an differential EOG signals. To safely detect voluntary blinking adequate switch or by one of the eye ...
Year: 2014, Volume: 14, Number: 3
... that the transistor power factor and eliminate certain harmonics. In [5 ], an and the diode are replaced by two bidirectional current IGBT chopper with a 5kHz frequency was analyzed by switches. simulation. Reference [6] presents a three-phase AC-AC converter with nine IGBTs and [7] suggests a method for im L ...
Year: 2020, Volume: 20, Number: 3
... , Arai [5]. In this paper, the authors constructed a receiver for allowing the investigation of electrical spontaneous or very weak signals of RF (Radio Frequency) based on stimulated activities of neurons, with or without the use of Schmitt trigger electronic circuit, exemplifying the use of drugs or medicines. Fig. ...
Year: 2009, Volume: 9, Issue: 1
... 10mH, 15mH, 20mH and 25mH ma (sin ‰ m t+ 0.16 sin 3‰ m t)+; ‰ m t 2€ respectively). The frequency commutation is fc=5kHz, the 3 3 frequency modulation is fp= 50Hz, the frequency modulation ratio is mf= fc/fp=100, ...
Year: 2010, Volume: 10, Issue: 3
... measurement parameters for the detection of downlink TETRA signals, settings, in two representative cases, one on the central through energy measurement. In order to optimize the frequency of the TETRA channel and another on the detection parameters we have assessed the probabilities of discrete component frequency of the synchronization detection and of false alarm, based ...
Year: 2010, Volume: 10, Issue: 1
... . It minimizes the torque pulsations and [Vi]= Vim cos(‰i t+ 2€ /3) uses power electronics components that allow a higher commutation frequency compared to the simple machines. cos(‰i t+ 4€ /3) However, the double stator induction machines supplied by nd the vector [Vo ...
Year: 2015, Volume: 15, Number: 3
... Motivated by the where ‰ r denotes the secondary angular speed and ‰-‰ r above discussion, an attempt is made in this paper to provide represents the slip angular frequency( € r ‚ sl). a survey in field-weakening speed control of LIMs The thrust developed by the machine can be expressed as: considering the ...
Year: 2009, Volume: 9, Issue: 2
... stator flux vector. Thus, the machine torque can be has some drawbacks such as operation with variable regulated to generate the stator angular speed, which becomes switching frequency and large torque ripple, due to the a command signal and permits to overcome the problem of its estimation. Furthermore, with the combined control methods, ...
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