Method of regulating and controlling a technical process such as spot-welding of metal sheets
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United States of America Patent
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Oct 24, 2006
Grant Date -
Apr 15, 2004
app pub date -
Feb 12, 2002
filing date -
Mar 1, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for controlling and driving a technical process executed in time by applying at each time t instructions Ci(t), leading to a measurable but not observable result R(t) and generating a plurality of observable quantities distinct from the result R(t) whereof at least two are independent Gj(t), which consists in: measuring at least two independent observable quantities Gj(t), Gp(t); with a predictive model M, or a set of models, whereof the variables comprise the at least two independent observable quantities, calculating an estimation Res(t)=M(G1(t), Gp(t) of the result R(t); using a drive law L, whereof the input variable is the estimated result Res(t) calculating new instructions Ci(t+1), applicable for time t+1; and replacing the instructions [C1(t), Cn(t)] by the instructions [C1(t), Cn(t+1)]. The method for controlling and driving a technical process is applicable to spot welding.
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