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AssigneeContinental Automotive Systems, Inc.
InventorPerry Robert Czimmek
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Electrical resistance of a heated component is determined for temperature control and monitoring. A voltage-representation signal, which is proportional to a voltage across a heater component, is received. A current-representation signal, which is proportional to an electrical current passing through the heater component is received and modulated to generate a resistance-representation signal that is proportional to an amount of modulation that makes the current-representation signal approximately equal to the voltage-representation signal. The modulation may be pulse-width modulation. The resistance-representation signal may be generated based on a signal that is proportional to the percent duty cycle of the pulse width modulation. A difference of the resistance-representation signal and the voltage-representation signal may be integrated to provide an error signal adapted to cause the modulation to be proportional to an electrical resistance of the heater component.
A method comprising:
Apparatus comprising:
Dependencies are inferred from the claim text.