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|1. (WO2017151960) HEATER ELEMENT AS SENSOR FOR TEMPERATURE CONTROL IN TRANSIENT SYSTEMS|
|Applicants:||WATLOW ELECTRIC MANUFACTURING COMPANY
|Inventors:||CULBERTSON, David, P.
EVERLY, Mark, D.
QUANDT, Jeremy, J.
PRADUN, James, N.
ROHDE, John, P.
HOVEN, Mark, L.g.
|Title:||HEATER ELEMENT AS SENSOR FOR TEMPERATURE CONTROL IN TRANSIENT SYSTEMS|
A method of predicting the temperature of a resistive heating element in a heating system is provided. The method includes obtaining resistance characteristics of resistive heating elements and compensating for variations in the resistance characteristics over a temperature regime. The resistance characteristics of the resistive heating element include, but are not limited to, inaccuracies in resistance measurements due to strain-induced resistance variations, variations in resistance due to the rate of cooling, shifts in power output due to exposure to temperature, resistance to temperature relationships, non-monotonic resistance to temperature relationships, system measurement errors, and combinations of resistance characteristics. The method includes interpreting and calibrating resistance characteristics based on a priori measurements and in situ measurements.