Control of resistance plug welding using quantitative feedback theory

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Description

Resistance welding is used extensively throughout the manufacturing industry. Variations in weld quality often result in costly post-weld inspections. Applications of feed-back control to such processes have been limited by the lack of accurate models describing the nonlinear dynamics of this process. A new system based on electrode displacement feedback is developed that greatly improves quality control of the resistance plug welding process. The system is capable of producing repeatable welds of consistent displacement (and thus consistent quality), with wide variations in weld parameters. This paper describes the feedback design of a robust controller using Quantitative Feedback Theory for this ... continued below

Physical Description

41 p.

Creation Information

Bentley, A.E.; Horowitz, I.; Chait, Y. & Rodrigues, J. December 1, 1996.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 25 times , with 6 in the last month . More information about this report can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Resistance welding is used extensively throughout the manufacturing industry. Variations in weld quality often result in costly post-weld inspections. Applications of feed-back control to such processes have been limited by the lack of accurate models describing the nonlinear dynamics of this process. A new system based on electrode displacement feedback is developed that greatly improves quality control of the resistance plug welding process. The system is capable of producing repeatable welds of consistent displacement (and thus consistent quality), with wide variations in weld parameters. This paper describes the feedback design of a robust controller using Quantitative Feedback Theory for this highly complex process, and the experimental results of the applied system.

Physical Description

41 p.

Notes

OSTI as DE97002486

Source

  • Other Information: PBD: Dec 1996

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  • Other: DE97002486
  • Report No.: SAND--94-0795
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/431135 | External Link
  • Office of Scientific & Technical Information Report Number: 431135
  • Archival Resource Key: ark:/67531/metadc674153

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Creation Date

  • December 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • May 5, 2016, 8:01 p.m.

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Bentley, A.E.; Horowitz, I.; Chait, Y. & Rodrigues, J. Control of resistance plug welding using quantitative feedback theory, report, December 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc674153/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.