scholarly journals Synchronization and Power Unit Controller for CO2 Laser Cable Marking System

2021 ◽  
Vol 15 ◽  
pp. 111-114
Author(s):  
S. Messaoud ◽  
F. Siserir ◽  
Y. Boucetta ◽  
M. Traiche ◽  
L. Henni ◽  
...  
Keyword(s):  
Laser Beam ◽  
Power Control ◽  
Power Unit ◽  
Co2 Laser ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Output Laser Beam ◽  
Control Circuits ◽  
Modulation Control ◽  
Output Laser

In this paper, we describe the design of the synchronization and power unit controller (SPUC) for CO2 laser cable marking system inline-processing. It is mainly composed of a synchronization and modulation control circuits. Power control of output laser beam is achieved by pulse width modulation (PWM). The synchronization between the CO2 laser, the rotating mask disk and the pivoting mirror is performed by a Lab VIEW based program and National Instruments (NI).

scholarly journals Easy-Riding Compact Electric Shopping Vehicle

2021 ◽  
Vol 33 (5) ◽  
pp. 1178-1189
Author(s):  
Takeharu Hayashi ◽  
Yoshihiko Takahashi ◽  
Satoru Yamaguchi ◽  
◽  
Keyword(s):  
Electric Power ◽  
Electric Vehicle ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Standing Position ◽  
Power Source ◽  
Sitting Position ◽  
Speed Controller ◽  
Experimental Vehicle ◽  
Modulation Control

We are developing a small compact electric vehicle for shopping purposes. In this study, we fabricated an experimental vehicle, that uses only six small rechargeable AA batteries (7.2 V, approximately 2 A·h) as an electric power source. The vehicle user can select between two driving positions: standing and sitting. A compact transmission with a 90-W DC motor and a speed controller that uses pulse width modulation control was designed as an actuating system. Running experiments were conducted to observe the performance of the fabricated vehicle on a flat floor in a gymnasium. The fabricated vehicle was able to operate for 52 min at a speed of 2.73 km/h. The getting-on and getting-off processes in the vehicle were repeated many times during shopping. The human leg strain while getting on and off the vehicle was investigated by electromyogram measurement. During the getting-on and getting-off processes in the vehicle, the myoelectric potential of the quadriceps increased in the sitting position but did not increase in the standing position. The experimental results show that a user suffers more strain in the sitting position than in the standing position.

Space vector pulse width modulation control techniques for a five‐phase quasi‐impedance source inverter

2017 ◽  
Vol 12 (3) ◽  
pp. 379-387 ◽  
Author(s):  
Ahmad Anad Abduallah ◽  
Mohammed Meraj ◽  
Mohammed Al‐Hitmi ◽  
Atif Iqbal
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Space Vector ◽  
Control Techniques ◽  
Modulation Control

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

A Pulse Width Modulation Control Scheme for Three-Way Catalyst Systems

2010 ◽  
Vol 43 (7) ◽  
pp. 111-116
Author(s):  
James C. Peyton Jones ◽  
Kenneth. R. Muske ◽  
Robert. W. Schallock ◽  
Jevon. M. Avis
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Control Scheme ◽  
Modulation Control ◽  
Catalyst Systems ◽  
Three Way Catalyst

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
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