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Title: Control of power to an inductively heated part

A process for induction hardening a part to a desired depth with an AC signal applied to the part from a closely coupled induction coil includes measuring the voltage of the AC signal at the coil and the current passing through the coil; and controlling the depth of hardening of the part from the measured voltage and current. The control system determines parameters of the part that are functions of applied voltage and current to the induction coil, and uses a neural network to control the application of the AC signal based on the detected functions for each part.
Inventors:
 [1];  [2];  [3];  [4];  [5]
  1. (1620 Adelita Dr. NE., Albuquerque, NM 87112)
  2. (1039 Red Oaks Loop NE., Albuquerque, NM 87122)
  3. (528 Longwood Loop NE., Rio Rancho, NM 87124)
  4. (13200 Blue Corn Maiden Trail NE., Albuquerque, NM 87112)
  5. (2805 Palo Alto NE., Albuquerque, NM 87112)
Issue Date:
OSTI Identifier:
870955
Assignee:
Adkins, Douglas R. (1620 Adelita Dr. NE., Albuquerque, NM 87112);Frost, Charles A. (1039 Red Oaks Loop NE., Albuquerque, NM 87122);Kahle, Philip M. (528 Longwood Loop NE., Rio Rancho, NM 87124);Kelley, J. Bruce (13200 Blue Corn Maiden Trail NE., Albuquerque, NM 87112);Stanton, Suzanne L. (2805 Palo Alto NE., Albuquerque, NM 87112) SNL
Patent Number(s):
US 5630957
Contract Number:
AC04-76DP00789; AC04-94AL85000
Research Org:
Sandia National Laboratories (SNL-NM), Albuquerque, NM; American Telephone and Telegraph Company
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
control; power; inductively; heated; process; induction; hardening; desired; depth; signal; applied; closely; coupled; coil; measuring; voltage; current; passing; controlling; measured; determines; parameters; functions; neural; network; application; based; detected; signal based; signal applied; induction coil; neural network; applied voltage; closely coupled; measured voltage; current passing; desired depth; neural net; current pass; /219/148/266/