Results 311 to 320 of about 195,273 (332)
Some of the next articles are maybe not open access.
2006
Pulse width modulation is a form of pulse coding where the modulated signal contains a chosen frequency or band of frequencies as the main components plus harmonics of very high order that can be easily filtered. Even though PWM originated in telecommunication systems, it is now very common in power electronic circuits: dc to dc converters, dc to ac ...
openaire +2 more sources
Pulse width modulation is a form of pulse coding where the modulated signal contains a chosen frequency or band of frequencies as the main components plus harmonics of very high order that can be easily filtered. Even though PWM originated in telecommunication systems, it is now very common in power electronic circuits: dc to dc converters, dc to ac ...
openaire +2 more sources
Sliding Mode Pulse Width Modulation
2007 American Control Conference, 2007This paper presents sliding mode pulse width modulation (SMPWM) control methodologies for a current- controlled inverter. Discussion begins with circuit analysis, proper references, and design of sliding surfaces. Based on this formulation, two novel approaches adopt sliding mode concept are proposed to make the system tracking selected references ...
Longya Xu, Vadim I. Utkin, Wenguang Yan
openaire +2 more sources
A pulse-width modulated audio amplifier
International Journal of Electronics, 1975A pulse-width modulated audio amplifier capable of large modulation level and of large efficiency is designed and constructed. The amplifier consists of an nstable multivibrator to generate h.f. pulses, a monostable multivibrator to give pulse-width modulation directly which incorporates a design called ‘ the recovery-time limiter ’ to reduce recovery ...
Güven Güneş, Ihsan Gök
openaire +2 more sources
Bipolar Multiplexed Pulse Width Modulation
IETE Journal of Education, 2013AbstractThis paper presents generation and detection of two-channel bipolar multiplexed pulse width modulated signal. The positive half cycles of a polar triangular wave of frequency fc are modulated in amplitude by one message signal and the negative half cycles are modulated in amplitude by another message signal.
openaire +2 more sources
2016
The PWM support in the ARTIK is a direct benefit from implementing the Arduino architecture inside a powerful Linux architecture. The ARTIK PWM works very similarly to the Arduino feature but there are some additional capabilities that a Linux kernel offers in addition to the standard Arduino support.
openaire +2 more sources
The PWM support in the ARTIK is a direct benefit from implementing the Arduino architecture inside a powerful Linux architecture. The ARTIK PWM works very similarly to the Arduino feature but there are some additional capabilities that a Linux kernel offers in addition to the standard Arduino support.
openaire +2 more sources
MIDI Pulse Width Modulation Application
2011 International Conference on P2P, Parallel, Grid, Cloud and Internet Computing, 2011Article describes simulation application for automatic managing lights devices on the stage. There are described all technologies and protocols necessary for application development. MIDI messages are input information and as an output serves Pulse width modulation. A managing tension is the result of Pulse width modulation.
openaire +2 more sources
Harmonic analysis of pulse-width modulated systems
Automatica, 2008The paper considers the so-called dynamic phasor model as a basis for harmonic analysis of a class of switching systems. The analysis covers both periodically switched systems and non-periodic systems where the switching is controlled by feedback. The dynamic phasor model is a powerful tool for exploring cyclic properties of dynamic systems.
Ulf T. Jonsson, Stefan Almer
openaire +3 more sources
PULSE WIDTH MODULATION WITH HYBRID SAMPLING TECHNIQUES
IFAC Proceedings Volumes, 1983Abstract The authors show how, by means of a simple circuit using particularities of sampling techniques, a low cost PWM polyphase generator has been developed. It is of particular interest that only standard digital and analog circuits are used, which all fit on a single eurocard. Further the authors describe the requirements for PWM generators and
N. Venlet, B. Kaczmareck, P. Lataire
openaire +2 more sources
Linearization of the pulse width modulated converter
1974 IEEE Power Electronics Specialists Conference, 1974A technique for deriving a linear model for pulse width modulated converters is presented, which is similar to a Thevenin equivalent circuit. The linear models for the boost, buck, and boost-buck power stages are derived. The technique is applicable to other configurations and variations of pwm converters as well.
openaire +2 more sources
A prefilter equalizer for pulse width modulation
Signal Processing, 2012This article demonstrates the feasibility of pulse-width-modulation (PWM) of discrete time signals in a digital audio amplifier without inducing the nonlinear distortion usually associated with straightforward PWM. This is achieved by prefiltering the signal prior to the PWM mapping in such a manner that the overall result is distortion-free.
openaire +2 more sources