Control system utilizing fault detection
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United States of America Patent
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Sep 7, 1999
Grant Date -
N/A
app pub date -
Jan 9, 1997
filing date -
Jan 9, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A control architecture having improved fault detection and correction capabilities is disclosed. The system comprises primary and monitor control systems, each having an associated control signal. A fault detector generates an alarm signal based upon differences observed between the primary and monitor control signal. The detector comprises an integrator and a memory means, and alarm signals are generated based upon the total amount of difference observed over a predetermined period of time. In one embodiment of the invention, primary and monitor control signals are averaged to provide a signal that is more fault tolerant than the individual control signals.
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