Lecture Notes in Electrical Engineering Volume 29 Shan-Ben Chen · Jing Wu Intelligentized Methodology for Arc Welding Dynamical Processes Visual Information Acquiring, Knowledge Modeling and Intelligent Control 123 Shan-Ben Chen Institute of Welding Engineering Shanghai Jiao Tong University Dongchuan Road, 800 Shangahi, 200240 P R China
[email protected] ISBN: 978-3-540-85641-2 Jing Wu Institute of Welding Engineering Shanghai Jiao Tong University Dongchuan Road, 800 Shangahi, 200240 P R China
[email protected] e-ISBN: 978-3-540-85642-9 Library of Congress Control Number: 2008935359 c Springer-Verlag Berlin Heidelberg 2009 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Cover design: eStudio Calamar S.L. Printed on acid-free paper 9 8 7 6 5 4 3 2 1 springer.com Preface Welding handicraft is one of the most primordial and traditional technics, mainly by manpower and human experiences. Weld quality and efficiency are, therefore, straitly limited by the welder’s skill. In the modern manufacturing, automatic and robotic welding is becoming an inevitable trend. However, it is difficult for automatic and robotic welding to reach high quality due to the complexity, uncertainty and disturbance during welding process, especially for arc welding dynamics. The information acquirement and real-time control of arc weld pool dynamical process during automatic or ro