Fail-safe potentiometer feedback system
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United States of America Patent
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Sep 12, 1989
Grant Date -
N/A
app pub date -
Sep 21, 1987
filing date -
Sep 21, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fail-safe electronic position monitoring system for a motor is specifically described in a flame safeguard system. The same fail-safe system could be used more generally in any type of positional monitoring system using a potentiometer. The potentiometer and its wiper are monitored by a microcomputer which has stored in its memory a profile of at least three critical parameters. The parameters are a low voltage parameter, a high voltage parameter, and a parameter that deals with the rate of the voltage level change. The rate voltage level change includes monotonocity function.
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