Results 131 to 140 of about 1,694,500 (183)
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Bandpass Pulse-Width Modulation (BP-PWM)
IEEE MTT-S International Microwave Symposium Digest, 2005., 2005New transmitter architectures utilizing nonlinear power amplifiers when transmitting linearly modulated signals are studied. The emphasis is on bandpass pulse-width modulation (BP-PWM) for which both theory and implementation proposals are presented.
S. Rosnell, J. Varis
exaly +2 more sources
A New Switching Strategy for Pulse Width Modulation (PWM) Power Converters
IEEE Transactions on Industrial Electronics, 2007This paper presents a new switching strategy for pulse width modulation (PWM) power converters. Since the proposed strategy uses independent on/off switching action of the upper or lower arm according to the polarity of the current, the dead time is not needed except instant of current polarity change.
Won Seok Oh
exaly +3 more sources
Computers and Electronics in Agriculture, 2021
Abstract Pulse width modulation (PWM) is currently implemented in agricultural sprayers to deliver the expected flowrate by managing the duty cycle and maintaining the target pressure and provide the desired droplet size. However, there are still issues about the application errors caused by the pressure variations when using this system as it may ...
Ajay Sharda, Joe D. Luck
exaly +2 more sources
Abstract Pulse width modulation (PWM) is currently implemented in agricultural sprayers to deliver the expected flowrate by managing the duty cycle and maintaining the target pressure and provide the desired droplet size. However, there are still issues about the application errors caused by the pressure variations when using this system as it may ...
Ajay Sharda, Joe D. Luck
exaly +2 more sources
2018 International Seminar on Application for Technology of Information and Communication, 2018
High torque and high efficiency are two factors used as a consideration of why many electric vehicles (EV) use brushless DC motor (BLDCM) as a propulsion system. Likewise, Amtenar car -a PENS's electric car- use this kind of motor as its propulsion. BLDCM can be driven by two techniques.
Era Purwanto +2 more
exaly +2 more sources
High torque and high efficiency are two factors used as a consideration of why many electric vehicles (EV) use brushless DC motor (BLDCM) as a propulsion system. Likewise, Amtenar car -a PENS's electric car- use this kind of motor as its propulsion. BLDCM can be driven by two techniques.
Era Purwanto +2 more
exaly +2 more sources
The effect of pulse width modulation (PWM) frequency on the reliability of thermoelectric modules
Eighteenth International Conference on Thermoelectrics. Proceedings, ICT'99 (Cat. No.99TH8407), 2003Pulse-width-modulation (PWM) control has many benefits when used to control power to thermoelectric modules (TEM's). This scheme allows the use of smaller, lighter circuitry that dissipates less heat than a comparable linear controller. However, abruptly turning power on and off to a TEM has been known to cause thermal cycling which reduces the ...
M.J. Nagy, S.J. Roman
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RANCANG BAGUN ALAT GEOLISTRIK BERBASIS PULSE - WIDTH MODULATION (PWM)
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016 UNJ, 2016Kebutuhan alat survai geofisika sangat tinggi, terutama alat geolistrik. Tinggi kebutuhan tersebut membuat alat geolistrik menjadi sangat mahal. Untuk memecahkan masalah tersebut, maka muncul ide pembuatan geolistrik. Alat geolistrik adalah suatu alat geofisika untuk mengetahui aliran arus listrik kedalam tanah.
Muhammad, Akbar, Gunawan, Handayani
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Nonlinear averaging applied to the control of pulse width modulated (PWM) pneumatic systems
Proceedings of the 2004 American Control Conference, 2004This work presents a control methodology that enables nonlinear model based sliding mode control of PWM-controlled pneumatic servo actuators. An averaging approach is developed to describe the equivalent continuous-time dynamics of a PWM controlled nonlinear system, which renders the originally discontinuous system, possibly non-affine in the input ...
Xiangrong Shen +3 more
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Implementasi Pembuka Jembatan Otomatis Menggunakan Teknik Pulse Width Modulation (PWM)
Jurnal Sistem Komputer Triguna Dharma (JURSIK TGD), 2023Banyak jembatan yang dibuat secara permanen dengan jarak antara permukaan air dengan jembatan yang tidak terlalu tinggi, apabila ada kapal dengan ukuran besar yang melintas di bawah jembatan mengalami kesulitan melewati bawah jembatan karena ketinggian kapal yang melebihi ketinggian jembatan sehingga kapal tersebut tidak dapat melintasi bawah jembatan ...
Ris Rianti Petra Angelina Sihotang +3 more
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Simulation of pulse width modulated (PWM) chopper drives using z-transformation
MELECON '98. 9th Mediterranean Electrotechnical Conference. Proceedings (Cat. No.98CH36056), 2002In this paper, a class-C chopper circuit is modeled using z-transformation including the time variation of the pulsewidth modulated (PWM) signal. A closed-loop speed control system using a direct current (DC) motor fed by the chopper is then simulated.
Gürbüz, Fatma, Akpınar, Eyup
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Influence of pulse width modulation (PWM) on the iron losses of electrical steel
2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA), 2014This paper deals with the measurement of the magnetic properties of electrical steel under the influence of pulse width modulation (PWM) in comparison to an ideal sinusoidal waveform. At first the theory and practice of measuring the magnetic properties with the ring core method are described. Next the measurement setup and results are depicted.
Andreas Boehm, Ingo Hahn
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