Results 201 to 210 of about 9,758 (236)
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Mechatronics, 2005
In this paper an extensive set of experiments and a related mathematical model investigating the dynamics of pneumatic actuators controlled by on-off solenoid valves, whose opening and closing time response is based on a pulse width modulation (PWM) technique, is presented.
Arcangelo Messina +2 more
exaly +3 more sources
In this paper an extensive set of experiments and a related mathematical model investigating the dynamics of pneumatic actuators controlled by on-off solenoid valves, whose opening and closing time response is based on a pulse width modulation (PWM) technique, is presented.
Arcangelo Messina +2 more
exaly +3 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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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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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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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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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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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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2013 IEEE International Conference on Systems, Man, and Cybernetics, 2013
This paper presents a Pulse Width Modulation (PWM) based method for Active Power (AP) and Reactive Power (RP) measurements in electric sinusoidal and Non-sinusoidal power systems. The method takes advantage of the fact that frequencies present in a power line are of a specific fundamental frequency range (a range centred around the 50Hz or 60Hz) and ...
Anastasios G. Bakaoukas +2 more
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This paper presents a Pulse Width Modulation (PWM) based method for Active Power (AP) and Reactive Power (RP) measurements in electric sinusoidal and Non-sinusoidal power systems. The method takes advantage of the fact that frequencies present in a power line are of a specific fundamental frequency range (a range centred around the 50Hz or 60Hz) and ...
Anastasios G. Bakaoukas +2 more
openaire +1 more source
Pulse width modulation (PWM) method for power components estimation in power meters
WIT Transactions on Information and Communication Technologies, 2014The scope of this paper is to present the Pulse Width Modulation (PWM) based method for Active Power (AP) and Reactive Power (RP) measurements as can be applied in Power Meters. Necessarily, the main aim of the material presented is a twofold, first to present a realization methodology of the proposed algorithm, and second to verify the algorithm’s ...
A.G. Bakaoukas, S. Liu, P. Petridis
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Control of the speed of a DC motor by employeeing pulse width modulation (PWM) technique
2009 12th International Conference on Computers and Information Technology, 2009This paper is mainly focused on the technique of pulse width modulation for controlling the speed of a 12 volt DC motor more efficiently. A potentiometer was used to generate a wide variety of pulses. The output of the controlling circuit (Pulse Width) was connected to the second circuit as input for direction control.
Mohammad Tafiqur Rahman +3 more
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