Results 201 to 210 of about 43,289 (238)

Position Control of Hydraulic Actuators Using Fuzzy Pulse Width Modulation (PWM)

Applied Mechanics and Materials, 2015
Hydraulic actuators are widely employed for industrial automation for its high power over weight ratio, functionality in tough operating conditions and low cost. However, the dynamics of hydraulic systems are non-linear and the system subjected to non-smooth and discontinuous non-linearities due to directional change of valve opening, friction, valve ...
Wei Ying Lai, Nurfarahin Onn, Collin Howe Hing Tang, Mohamed Hussein   +3 more
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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), 2003
Pulse-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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Neo-Transmitter Using Pulse Width Modulation (PWM) Method for Wireless Smart Sensors

IEEJ Transactions on Sensors and Micromachines, 2008
The wireless smart sensors have been proposed not only for high-risk and chronically ill patients but also in the healthcare field. The radio frequency (RF) transmitter is necessary to fabricate wireless smart sensors. This paper presents a proposal of the complementary metal-oxide-semiconductor (CMOS) RF transmitter using pulse width modulation (PWM ...
Wang Hoon Lee, Jong-Wan Kim, Hidekuni Takao, Kazuaki Sawada, Makoto Ishida   +4 more
openaire   +1 more source

Pulse width modulation (PWM) method for power components estimation in power meters

WIT Transactions on Information and Communication Technologies, 2014
The 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
openaire   +1 more source

Research for PWM rectifier based on voltage space-vector Pulse-Width Modulation

2007 International Conference on Electrical Machines and Systems (ICEMS), 2007
Based on the operating principle of PWM (pulse-width modulation) rectifier, aiming at the major factors which influence the power factor of rectifier, switching frequency and its losses, an improved traditional method of SVPWM (space-vector pulse-width modulation) has been proposed by applying the SVPWM technology.
Xiao-ming Liu, Ji-bin Wen, Ran Wang, Jian Wang   +3 more
openaire   +1 more source

Pulse Width Modulation (PWM) Method for Power Components Estimation - Active and Reactive Power Measurement

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 ...
Bakaoukas A.G., Chao K.-M., Li W.
openaire   +1 more source

Pulse Width Modulation (PWM) and Pulse Amplitude Modulation (PAM) Technique for Medium-Speed BLDCM in Electric Vehicle Application

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.
Muhammad Rizani Rusli, Haris Rahmatullah, Melinda Badriatul Fauziah, Arman Jaya, Mochammad Machmud Rifadil, Era Purwanto   +5 more
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Nonlinear averaging applied to the control of pulse width modulated (PWM) pneumatic systems

Proceedings of the 2004 American Control Conference, 2004
This 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 ...
null Xiangrong Shen, null Jianlong Zhang, E.J. Barth, M. Goldfarb   +3 more
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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), 2014
This 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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Pulse-Width Modulation (PWM) Signal Simulation with User-Defined Sampling Frequency and Modulating Frequency Using MATLAB

2021 IEEE International Conference on Automatic Control & Intelligent Systems (I2CACIS), 2021
Pulse width modulation has many useful applications and so with this, a PWM signal simulation through MATLAB is presented that can be beneficial for analysis and model development. This paper aims to have a baseline how to present pulse width modulation graphically using MATLAB.
openaire   +1 more source