Jiluan P. Arc Welding Control

Woodhead Publishing Limited, Cambridge, CRC Press LLC, 2003. — ISBN: 1-85573-687-X (Woodhead Publishing), ISBN: 0-8493-1772-X (CRC Press).Woodhead Publishing Series in Welding and Other Joining Technologies No. 51
a major new handbook covering all aspects of arc welding
describes many novel and previously un-published techniques in detail
covers arc welding behaviour, arc control methods, arc sensors and seam tracking, temperature measurement and robotics
numerous diagrams and drawings
essential reference for the welding engineer using this increasingly important technique
Advances in science and technology have transformed the welding industry in recent years, with new developments in arc welding at the forefront. Arc welding control details Professor Pan Jiluan's remarkable achievements in this area using innovative methods which have given outstanding results and which have not been described in any previous publication.Arc welding control covers all aspects of the technology. Part one quantitatively describes the dynamic behaviour of arc welding, the power sources used and their effect on welding technology through the basis of control theory. Part two then describes new ways of controlling the welding arc through modern electronics. Part three establishes the first mathematical model of the arc sensor on the basis of control theory and part four describes a new method for measuring weldment temperature fields using the colorimetric-imaging method. Part five describes the idea of recognizing weld grooves with a three-dimensional vision system and automatic programming of the weld path.This comprehensive and authoritative treatment of the arc welding process and its control will make Arc welding control the essential resource for all welding engineers looking to use the technique to its maximum effectiveness.Dynamic Behaviour of Arc WeldingTheoretical analysisWelding with constant wire feed rate
Welding with regulated wire feed rate
Welding with both regulated wire feed rate and self regulationDynamic characteristics of the power source
Research status
Description of dynamic characteristics
Transfer function of the power source
Measurement of transfer function
Influence of transfer function on technological propertiesExperimental studyCarbon dioxide welding
MIG welding
Pulsed MIG weldingWelding Arc ControlControl method QH-ARC 101
Research status on welding arc control
Principle of control method QH-ARC 101
Double step characteristics
Circuits for alternating two double step output characteristics
Static accuracy and dynamic characteristics
Circuit diagram of the power source
Technological behaviourControl method QH-ARC 103Control method QH-ARC 102
Control method QH-ARC 103
Mathematical analysis of arc operating point movement
Closed loop control of weld penetrationArc control of CO₂ welding and AC MIG welding
CO₂ welding
AC MIG weldingArc Sensor and Seam TrackingSensor for weld seam tracking
Research and development
Applications of arc sensors in industry
Principles of seam tracking with arc sensor
Scanning arc welding torch
Rotating arc torch RAT-IIMathematical models of arc sensors
Static model
Dynamic modelSignal processing of arc sensor
Signal processing of an ideal welding arc
Analysis of signal character
Filtering of signals
Signal processing in practical welding processesAutomatic seam tracking welding machine with arc sensorConventional type tractor
Crawl type tractorReal Time Measurement of the Welding Temperature FieldPrinciples of the image colorimetric methodFundamentals of the image colorimetric methodA study of the image colorimetric method
Facilities for acquisition of infrared image
Sensor for experimental use
Image colorimetric system
Calibration of the system by mathematical methods
Experimental results and verification
Calibration procedures
Effects of measuring conditionsDesign of image colorimetric apparatusFormation of thermal radiation image
Theoretical analysis of the image colorimetric method
Division of temperature field
Wavelength of filter
Design of sensor
Effects of measuring conditions
Calibration of systemPractical measurement and application
Measurement of the welding temperature field
Mathematical model of the welding temperature field based on measurement
Theoretical and measured data for different welding parameters
Extraction of welding thermoycycle parameters
Three dimensional welding temperature field
Weld penetration closed loop controlAutomatic Path Programming of Welding RobotsVision system and automatic path programming
Recognition of the groove path
Robot with automatic path programming