Results 21 to 30 of about 200,732 (327)
Measurement + Control, 2020 The common dual-pulse-width-modulation converter adopts the independent method to control the rectifier and inverter, which has the defects including direct current voltage fluctuation, slow system response and so on.
Bo Fan +3 more
doaj +1 more source
IEEE Access, 2020 Re-pulsing glow discharges in atmospheric-pressure air were experimentally investigated using a push-pull generator with pulse-width modulation. Discharges were ignited as a spark-glow discharge sequence and sustained in a glow regime after ignition in a
Vladislav Gamaleev +2 more
doaj +1 more source
Cooling Strategies for Greenhouses in Summer: Control of Fogging by Pulse Width Modulation [PDF]
, 2008 The possibilities for improving the control of greenhouse fogging systems, were studied by comparing several combinations of ventilation cooling techniques, shade screening and low-pressure fogging.
A. Perdigones +24 more
core +2 more sources
Analysis of Kapitza-Dirac diffraction patterns beyond the Raman-Nath regime [PDF]
, 2009 We study Kapitza-Dirac diffraction of a Bose-Einstein condensate from a standing light wave for a square pulse with variable pulse length but constant pulse area.
Adams +24 more
core +1 more source
Intensity Distribution of the Shaped Femtosecond Laser Pulse by Step Phase Modulation
Nantong Daxue xuebao. Ziran kexue ban, 2020 The intensity distribution of the step phase shaped femtosecond laser pulse by ultra-fast pulse shaping technique is studied. The results show that two sub-pulses with variable intensity can be developed from a Gaussian laser pulse by adjusting the step ...
HUANG Yunxia;JI Xianming;XU Shuwu
doaj +1 more source
Hybrid Space Vector PWM Strategy for Three-Phase VIENNA Rectifiers
Sensors, 2022 Vienna rectifiers are widely used, but they have problems of zero-crossing current distortion and midpoint potential imbalance. In this paper, an improved hybrid modulation strategy is proposed.
Yaodong Wang +3 more
doaj +1 more source
Variability of the Pulsed Radio Emission from the Large Magellanic Cloud Pulsar PSR J0529-6652 [PDF]
, 2012 We have studied the variability of PSR J0529-6652, a radio pulsar in the LMC, using observations conducted at 1390 MHz with the Parkes 64-m telescope.
Altemose, Dean +3 more
core +3 more sources
Generalized inverses applied to Pulse Width Modulation for static conversion: a first study [PDF]
, 2013 This paper points out the generic matrix approach to design Pulse Width Modulation strategies of three-phase Voltage Source Inverters. This well-known problem has infinitely many solutions, and many modulation methods already exist.
Berkoune, Karima +5 more
core +3 more sources
A Chaotic Pulse-Time Modulation Method for Digital Communication
Abstract and Applied Analysis, 2012 We present and investigate a method of chaotic pulse-time modulation (PTM) named chaotic pulse-width-position modulation (CPWPM) which is the combination of pulse-position-modulation (PPM) and pulse-width modulation (PWM) with the inclusion of chaos ...
Nguyen Xuan Quyen +2 more
doaj +1 more source
High Resolution Pulse Width Modulators in FPGA [PDF]
2007 3rd Southern Conference on Programmable Logic, 2007 Pulse width modulation (PWM) is a very common technique used in different applications, from the control of motors, switching power converters (power supplies), audio amplifiers or illumination systems. In some of those applications, the pulse frequency has increased so much in the last years that the resolution obtained with classical (counter ...
Castro, Ángel de +3 more
openaire +2 more sources