Process control system and method with automatic fault avoidance
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United States of America Patent
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Oct 29, 2002
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N/A
app pub date -
Dec 3, 1999
filing date -
Dec 3, 1999
priority date (Note) -
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Abstract
A control system incorporates components that automatically switch information sources in response to actual or potential degradation of information generated by them. Thus, a control system has first and second control components that generate first and second 'source' signals, respectively, representing substantially identical or related process control variables. A third control component, which normally processes the first source signal, responds to actual or potential degradation of that signal for processing the second source signal in lieu of the first.
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