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

Publiceringsår: 2010
Språk: Engelska
Dokumenttyp: Konferensbidrag


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.



  • Control Engineering
  • Mechanical Engineering
  • cascade control
  • welding
  • nuclear power
  • temperature control


2010 ASME Dynamic Systems and Control Conference
Cambridge, Massachusetts
  • LCCC

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