scholarly journals Magnetic Property Evaluation of the High-Speed Motor Stator Core Under Sinusoidal and Pulse Width Modulation Wave Excitation Using the Stator Winding Excitation Method

2019 ◽  
Vol 27 (1) ◽  
pp. 79-84
Author(s):  
Mohachiro OKA ◽  
Masato ENOKIZONO
Keyword(s):  
Magnetic Property ◽  
Pulse Width ◽  
High Speed ◽  
Pulse Width Modulation ◽  
Stator Winding ◽  
Wave Excitation ◽  
Stator Core ◽  
Modulation Wave ◽  
Property Evaluation ◽  
Excitation Method

Dynamic vacuum pressure tracking control with high-speed on-off valves

2018 ◽  
Vol 232 (10) ◽  
pp. 1325-1336 ◽  
Author(s):  
Gang Yang ◽  
Kai Chen ◽  
Linglong Du ◽  
Jingmin Du ◽  
Baoren Li
Keyword(s):  
Mass Flow ◽  
Pulse Width ◽  
High Speed ◽  
Pulse Width Modulation ◽  
Sliding Mode ◽  
Tracking System ◽  
Vacuum Pressure ◽  
Chamber Pressure ◽  
Asymmetric Structure ◽  
The Impact

A vacuum pressure tracking system with high-speed on-off valves is a discontinuous system due to the discrete nature of high-speed on-off valves. Chamber pressure changes in the system are determined by the mass flow rates during the processes of charging and discharging. Here, a sliding mode controller with an asymmetric compensator based on average mass flow rate is designed for accurate vacuum pressure tracking. The controller output signal is converted into the duty cycles of the high-speed on-off valves via a pulse width modulation pulsing scheme. Owing to the extreme asymmetry of the processes, an asymmetric structure comprising one high-speed on-off valve in the charging unit and three high-speed on-off valves in the discharging unit is applied to weaken the impact of asymmetry. In addition, an asymmetric compensator is also designed to modify the pulse width modulation pulsing scheme to further eliminate the asymmetry. Experimental results indicate that the proposed controller achieves better performance in pressure tracking with the asymmetric compensator overcoming process asymmetry and enhancing system robustness.

Investigation on adaptive pulse width modulation control for high speed on/off valve

2020 ◽  
Vol 34 (4) ◽  
pp. 1711-1722
Author(s):  
Qiang Gao ◽  
Yuchuan Zhu ◽  
Zhang Luo ◽  
Niyomwungeri Bruno
Keyword(s):  
Pulse Width ◽  
High Speed ◽  
Pulse Width Modulation ◽  
Modulation Control

scholarly journals Performance analysis of a high-speed on/off valve based on an intelligent pulse-width modulation control

2017 ◽  
Vol 9 (11) ◽  
pp. 168781401773324 ◽  
Author(s):  
Qi Zhong ◽  
Bin Zhang ◽  
Hua-Yong Yang ◽  
Ji-En Ma ◽  
Rong-Fong Fung
Keyword(s):  
Performance Analysis ◽  
Pulse Width ◽  
High Speed ◽  
Pulse Width Modulation ◽  
Modulation Control

scholarly journals Space Vector Pulse Width Modulation for High-Speed Induction Motor Implemented in Nios II Softcore Processor

2018 ◽  
Vol 3 (1) ◽  
pp. 99-107
Author(s):  
Maciej Chojowski
Keyword(s):  
Induction Motor ◽  
Pulse Width ◽  
High Speed ◽  
Pulse Width Modulation ◽  
Classical Method ◽  
Hardware Description Language ◽  
Description Language ◽  
Space Vector ◽  
Nios Ii ◽  
Hardware Description

Abstract The purpose of the article was to present the idea of space vector pulse width modulation (SVPWM) and implementation in Nios II softcore processor. The SVPWM module was described in a classical method in hardware description language both as an independent structure and as an additional component to softcore processor. The available methods were compared, and the experiment was carried out in the laboratory to test implemented SVPWM algorithm using high-speed induction motor.

scholarly journals PENGENDALIAN KECEPATAN MOTOR DC DENGAN METODA FUZZY LOGIC BERBASIS MIKROKONTROLLER

2018 ◽  
Vol 1 (2) ◽  
pp. 1-12
Author(s):  
Nasrul Harun
Keyword(s):  
Fuzzy Logic ◽  
Pulse Width ◽  
High Speed ◽  
Pulse Width Modulation ◽  
Control Process ◽  
Dc Motor ◽  
Small Scale ◽  
Motor Speed ◽  
Fuzzy Logic Method ◽  
Logic Method

The Technology and information development involve production process in industries using microcontroller as a brain in control process. The number  of control process with microcontroller using Fuzzy Logic method to get the function as is needed. Motors DC are used in some  equipment as a driver, not only in small scale but also in huge scale. It used in low or high speed too. The way of controlled chosen depend on the function of DC motor movement. The another method is Pulse Width Modulation (PWM). This is an effective method to controlled DC motor. This method produces square pulses which have specific comparison between high pulse and low pulse. It is usual scale from 0% to 100%. In this research, both Fuzzy Logic method and Pulse Width Modulation (PWM) method base of microcontroller ATMega 8535, both are integrated to control lthe  DC motor speed.

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