Menu driven heat treatment control of thin walled bodies
- Churchill Boro, PA
- Monroeville, PA
- Greensburg, PA
- Allison Park, PA
A process for controlling the heating of a thin-walled body according to a predetermined temperature program by means of electrically controllable heaters, comprising: disposing the heaters adjacent one surface of the body such that each heater is in facing relation with a respective zone of the surface; supplying heat-generating power to each heater and monitoring the temperature at each surface zone; and for each zone: deriving (16,18,20), on the basis of the temperature values obtained in the monitoring step, estimated temperature values of the surface at successive time intervals each having a first selected duration; generating (28), on the basis of the estimated temperature values derived in each time interval, representations of the temperature, THSIFUT, which each surface zone will have, based on the level of power presently supplied to each heater, at a future time which is separated from the present time interval by a second selected duration; determining (30) the difference between THSIFUT and the desired temperature, FUTREFTVZL, at the future time which is separated from the present time interval by the second selected duration; providing (52) a representation indicating the power level which sould be supplied to each heater in order to reduce the difference obtained in the determining step; and adjusting the power level supplied to each heater by the supplying step in response to the value of the representation provided in the providing step.
- DOE Contract Number:
- NPD843820AX
- Assignee:
- U.S. Dept. of Energy (Washington, DC)
- Patent Number(s):
- US 5094702
- OSTI ID:
- 868184
- Country of Publication:
- United States
- Language:
- English
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driven
heat
treatment
control
walled
bodies
process
controlling
heating
thin-walled
according
predetermined
temperature
means
electrically
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heaters
comprising
disposing
adjacent
surface
heater
facing
relation
respective
zone
supplying
heat-generating
power
monitoring
deriving
16
18
20
basis
values
obtained
step
estimated
successive
time
intervals
selected
duration
generating
28
derived
interval
representations
thsifut
based
level
presently
supplied
future
separated
determining
30
difference
desired
futreftvzl
providing
52
representation
indicating
sould
reduce
adjusting
response
value
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power level
heat treatment
predetermined temperature
time interval
time intervals
desired temperature
surface zone
electrically controllable
generating power
temperature value
driven heat
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