Results 21 to 30 of about 103,578 (209)

Trajectory Planning for Spacecraft Rendezvous with On / Off Thrusters [PDF]

open access: yes, 2011
18th World CongressThe International Federation of Automatic ControlMilano (Italy) August 28 - September 2The objective of this work is to present a trajectory planning algorithm for spacecraft rendezvous that is able to incorporate Pulse-Width Modulated
Camacho, Eduardo F.   +2 more
core   +4 more sources

A Novel DC-Power Control Method for Cascaded Converter under DC Voltage-Imbalance Condition

open access: yesJournal of Electrical and Computer Engineering, 2022
This paper proposes an interphase power control algorithm (IPCA) and submodule power control algorithm (SPCA) based on state transition PWM (ST-PWM) for cascaded H-bridge inverter with unbalanced DC sources.
Zhenglong Xia   +5 more
doaj   +1 more source

A Carrier-Based PWM Strategy Providing Neutral-Point Voltage Oscillation Elimination for Multi-Phase Neutral Point Clamped 3-Level Inverter

open access: yesIEEE Access, 2019
General pulse width modulation (PWM) model for multi-phase neutral point (NP) clamped (NPC) 3-level inverter (3LI) is described. A novel PWM strategy for N -phase NPC 3LI with unconditional NP voltage balance is proposed as well as its carrier-based ...
Weidong Jiang   +4 more
doaj   +1 more source

Experimental comparison between proportional and PWM-solenoid valves controlled servopneumatic positioning systems [PDF]

open access: yes, 2017
The performance of the Dynamical Adaptive Backstepping-Sliding Mode Control (DAB-SMC) scheme for positioning of a pneumatic cylinder regulated by two types of PWM-solenoid valves is experimentally investigated.
Abd. Rahman, Ramhuzaini   +1 more
core   +1 more source

Analysis of Switching Sequence Operation for Reduced Switch Multilevel Inverter With Various Pulse Width Modulation Methods

open access: yesFrontiers in Energy Research, 2020
Pulse width modulation (PWM) methods are used to control the switching sequence operations of conventional multilevel inverters (MLIs) and reduced switch multilevel inverters (RSMLIs).
Vinod Kumar Kanike, Saravanakumar Raju
doaj   +1 more source

Kontrol Proporsional Integral Derivatif (PID) pada Kecepatan Sudut Motor DC dengan Pemodelan Identifikasi Sistem dan Tuning

open access: yesJurnal Elkomika, 2021
ABSTRAK Penelitian ini mengusulkan tentang sistem kontrol kecepatan sudut Motor Direct Current (DC) menggunakan kontrol Proporsional Integral Derivatif (PID).
ALFIAN MA'ARIF   +2 more
doaj   +1 more source

Digital control of dual-load LCLC resonant converters [PDF]

open access: yes, 2005
The paper proposes the analysis, design and realisation of dual-output resonant LCLC converters with independent output regulation, employing a single power stage and combined PWM and frequency control.
Ang, Y A   +3 more
core   +1 more source

Optimization method for precise control of proportional electromagnetic valve for automatic drive of agricultural machinery

open access: yes浙江大学学报. 农业与生命科学版, 2018
To solve the problems of pulse width modulation (PWM) proportional solenoid valve control mode, such as large current ripple and low control precision, a method of dual PWM was adopted to control the proportional solenoid valve.
GENG Biao   +4 more
doaj   +1 more source

Trajectory Planning for Spacecraft Rendezvous in Elliptical Orbits with On / Off Thrusters [PDF]

open access: yes, 2014
The 19th World Congress of the International Federation of Automatic Control 2014 Cape Town, SudáfricaIn a previous work, the authors developed a trajectory planning algorithm for spacecraft rendezvous which computed optimal Pulse-Width Modulated (PWM ...
Camacho, Eduardo F.   +2 more
core   +1 more source

Speed control with low armature loss for very small sensorless brushed DC motors [PDF]

open access: yes, 2009
A method for speed control of brushed dc motors is presented. It is particularly applicable to motors with armatures of less than 1 cm3. Motors with very small armatures are difficult to control using the usual pulsewidth-modulation (PWM) approach and ...
McLeish, J.   +2 more
core   +2 more sources

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