Multiple input electrode gap controller

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872415

Hysinger, Christopher L ^[1]; Beaman, Joseph J ^[1]; Melgaard, David K ^[2]; Williamson, Rodney L ^[2]

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1. Austin, TX
2. Albuquerque, NE

A method and apparatus for controlling vacuum arc remelting (VAR) furnaces by estimation of electrode gap based on a plurality of secondary estimates derived from furnace outputs. The estimation is preferably performed by Kalman filter. Adaptive gain techniques may be employed, as well as detection of process anomalies such as glows.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Albuquerque, NM)
• Patent Number(s): US 5930284
• OSTI ID: 872415
• Country of Publication: United States
• Language: English

Related Subjects

multiple
input
electrode
gap
controller
method
apparatus
controlling
vacuum
remelting
var
furnaces
estimation
based
plurality
secondary
estimates
derived
furnace
outputs
preferably
performed
kalman
filter
adaptive
techniques
employed
detection
process
anomalies
glows
electrode gap
preferably performed
multiple input
gap based
/373/