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Cascaded control of power input and welding temperature during sealing of spent nuclear fuel canisters

Cederqvist, Lars LU ; Garpinger, Olof LU ; Hägglund, Tore LU and Robertsson, Anders LU (2010) 2010 ASME Dynamic Systems and Control Conference
Abstract
The friction stir welding procedure to seal copper canisters requires variable power input throughout the 45 minute long weld cycle to keep the welding temperature within the process window. This is due to variable thermal boundary conditions throughout the weld cycle which, together with fast disturbances in the spindle torque, requires control of both the power input and the welding temperature to achieve a stable and robust process. By using a cascaded loop that determines the power input requirement, the regulator will not be dependent on repeatability in the necessary power input between weld cycles. As a result, a more accurate and reliable closed-loop control of the welding

temperature is acquired.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to conference
publication status
published
subject
keywords
cascade control, welding, nuclear power, temperature control
conference name
2010 ASME Dynamic Systems and Control Conference
external identifiers
  • Scopus:79958187017
language
English
LU publication?
yes
id
38bff44b-d732-40b5-a389-b4ea01e90486 (old id 1769927)
date added to LUP
2011-01-26 09:48:28
date last changed
2016-10-13 04:57:24
@misc{38bff44b-d732-40b5-a389-b4ea01e90486,
  abstract     = {The friction stir welding procedure to seal copper canisters requires variable power input throughout the 45 minute long weld cycle to keep the welding temperature within the process window. This is due to variable thermal boundary conditions throughout the weld cycle which, together with fast disturbances in the spindle torque, requires control of both the power input and the welding temperature to achieve a stable and robust process. By using a cascaded loop that determines the power input requirement, the regulator will not be dependent on repeatability in the necessary power input between weld cycles. As a result, a more accurate and reliable closed-loop control of the welding<br/><br>
temperature is acquired.},
  author       = {Cederqvist, Lars and Garpinger, Olof and Hägglund, Tore and Robertsson, Anders},
  keyword      = {cascade control,welding,nuclear power,temperature control},
  language     = {eng},
  title        = {Cascaded control of power input and welding temperature during sealing of spent nuclear fuel canisters},
  year         = {2010},
}