Method and system for estimating driving point voltage
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United States of America Patent
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N/A
Issued Date -
Aug 9, 2007
app pub date -
Sep 8, 2006
filing date -
Oct 17, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and system for estimating a driving point voltage of a resistance weld system. The method includes periodically sampling a supplied voltage and a supplied current of a system to obtain a plurality of sets of a sampled voltage value and a sampled current value. The sampled values are used for creating a volt time area of the sampled voltage, a current time area of the sampled current, and a current difference time area of the sampled current. The method further includes creating an estimated line resistance and an estimated line reactance of the system based on the first set of a sampled voltage value and a sampled current value and the second set of a sampled voltage value and a sampled current value. The volt time area, current time area, current difference time area, line resistance and line impedance are used for creating a driving point voltage area or waveform. The system includes circuitry for implementing the method for a resistance weld control.
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