Fault tolerant controller
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United States of America Patent
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Jul 1, 1986
Grant Date -
N/A
app pub date -
Oct 27, 1983
filing date -
Oct 27, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A controller operable in a normal mode of operation to control an output device in response to a sensed condition includes means for detecting a fault in the controller or output device. Means are responsive to the fault detecting means for controlling the output device in a failsafe mode of operation wherein the output device is safely operated without regard to the sensed condition when a fault is detected. Means responsive to the fault detecting means causes a return to the normal mode of operation only if the existence of the fault can be detected while in the failsafe mode and the fault ceases to exist during such time.
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