Results 31 to 40 of about 387,123 (341)

Time domain add-drop multiplexing scheme enhanced using a saw-tooth pulse shaper [PDF]

open access: yes, 2009
We experimentally demonstrate the use of saw-tooth optical pulses, which are shaped using a fiber Bragg grating, to achieve robust and high performance time-domain add-drop multiplexing in a scheme based on cross-phase (XPM) modulation in an optical ...
Boscolo   +11 more
core   +1 more source

Modified Discontinuous Pulsewidth Modulation Approach With Independent Phase Loss Adjustment for Voltage Source Converters

open access: yesIEEE Access, 2023
This paper presents an efficient independent phase switching loss reduction technique for 2-level 3-phase voltage source inverters. A modified carrier-based pulse-width modulation algorithm, named per-phase discontinuous pulse-width modulation, is used ...
Minh-Hoang Nguyen   +2 more
doaj   +1 more source

Modeling and simulation of PMSM control system based on SVPWM [PDF]

open access: yes, 2008
The paper introduces the basic principle of space vector pulse width modulation simply and expatiates a method for implementing space vector pulse width modulation in detail based on MATLAB/SIMULINK, designs modeling and simulation of AC servo system ...
Guo, Y, Jin, J, Wang, Z, Zhan, Y, Zhu, J
core   +1 more source

Novel Asymmetrical Pulse Width Modulation Method

open access: yesMATEC Web of Conferences, 2017
The paper proposes new asymmetrical PWM that can be used for operation of multilevel inverters. The working and construction principle of this PWM is demonstrated on 13-level PWM signal that is applied to nine-level inverter and operates it as 13-level ...
Baimel Dmitry, Tapuchi Saad, Baimel Nina
doaj   +1 more source

Coordinate strategy of dual-pulse-width-modulation converter based on direct power control with load power feed-forward

open access: yesMeasurement + 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

Control and Stabilization of Centimeter Scale Glow Discharge in Ambient Air Using Pulse-Width Modulation

open access: yesIEEE 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

Droplet size and nozzle tip pressure from a pulse-width modulation sprayer

open access: yesBiosystems Engineering, 2019
Pulse-width modulation (PWM) sprayers can improve application accuracy through flow control, turn compensation, and high-resolution overlap control by pulsing an electronically-actuated solenoid valve which controls the relative proportion of time each ...
Thomas R. Butts   +5 more
semanticscholar   +1 more source

Variability of the Pulsed Radio Emission from the Large Magellanic Cloud Pulsar PSR J0529-6652 [PDF]

open access: yes, 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

Analysis of VCO based noise shaping ADCs linearized by PWM modulation [PDF]

open access: yes, 2012
Nonlinearity is one of the main problems associated with VCO based noise shaping ADCs. Their open loop architecture does not permit correction of the nonlinear voltage to frequency response of the VCO by feedback.
Hernandez, Luis   +3 more
core   +2 more sources

Cooling Strategies for Greenhouses in Summer: Control of Fogging by Pulse Width Modulation [PDF]

open access: yes, 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

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