Optimizing the feedback control of Galvo scanners for laser manufacturing systems

2010 ◽  
Author(s):  
Theodore Mirtchev ◽  
Robert Weeks ◽  
Sergey Minko
Keyword(s):  
Feedback Control ◽  
Manufacturing Systems ◽  
Laser Manufacturing

Paper 14: Pulsed Solid-State Lasers for Engineering Fabrication Processes

1968 ◽  
Vol 183 (4) ◽  
pp. 75-90
Author(s):  
B. F. Scott ◽  
D. L. Hodgett
Keyword(s):  
Solid State ◽  
Liquid Phase ◽  
Manufacturing Systems ◽  
Pulsed Laser ◽  
Damage Mechanism ◽  
Solid State Lasers ◽  
Factors Affecting ◽  
Surface Plane ◽  
Laser Manufacturing ◽  
Output Characteristics

Explosive ejection of liquid phase material can be induced when the output of a pulsed laser is focused into the surface plane of a solid. When the output characteristics of the laser are properly chosen, the damage mechanism can be controlled in such a way that drilling and welding operations, useful in engineering applications, can be performed. This is the theme of the paper which offers, in illustration, descriptions of specific laser manufacturing systems. Factors affecting cost and reliability arc also considered.

An Innovative Drive Train Design for Improved Dead Reckoning Accuracy in Automated Guided Vehicles

2011 ◽  
Vol 383-390 ◽  
pp. 5375-5380
Author(s):  
Murelitharan Muniandy ◽  
Kanesan Muthusamy
Keyword(s):  
Feedback Control ◽  
Flexible Manufacturing ◽  
Manufacturing Systems ◽  
Material Handling ◽  
Dead Reckoning ◽  
Surface Characteristics ◽  
Drive Train ◽  
Automated Guided Vehicles ◽  
Successful Implementation ◽  
Wheeled Mobile Robots

The automated guided vehicle (AGV) is a key component for the successful implementation of flexible manufacturing systems (FMS). AGVs are wheeled mobile robots (WMR) employed for material handling in the constantly evolving layouts of these modern factory shop floors. As such their ability to navigate autonomously is an equally important aspect to sustain an efficient manufacturing process. However, their mobility efficiency is inherently affected by the unproductive systematic and non-systematic odometry errors. Odometry errors mainly occur due to the mobility configuration of the AGV drive train and the surface characteristics the robot is interacting with. Odometry error accumulates over the distance traveled and leads to severe dead reckoning inaccuracy if the robot’s feedback control mechanism is unable to correct the error fast. This paper proposes an innovative drive train mechanism called dual planetary drive (DPD) that will minimize odometry errors without the need for complex electronic feedback control systems

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