Relay control assembly
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United States of America Patent
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Jul 3, 1990
Issued Date -
N/A
app pub date -
Jun 2, 1987
filing date -
Mar 14, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention comprises a relay control circuit that provides highly efficient and reliable control for devices that perform in demanding applications such as space. Multiple levels of redundant function control are provided by redundant actuators that perform mechanical operations. Each actuator is driven by redundant motors for increased reliability. Motor current sensing is provided to determine arrival of the actuator at mechanical stops, which are located at the full deploy position. Limit switches also sense when the actuators are in the full deploy position. In addition, multiple control signal so are required to initiate certain critical operations. Critical operations also are performed redundantly for increased reliability.
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