Electronically controlling the landing of an armature in an electromechanical actuator
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United States of America Patent
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Jan 23, 2001
Grant Date -
N/A
app pub date -
Feb 19, 1998
filing date -
Dec 8, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Sensing magnetic flux in an electromechanical actuator having dual axially opposed stators and dual springs, a control system modifies the rise of flux in such a manner to produce a substantially zero velocity landing of an armature against the stators. The flux is sensing by means of a sensor such as a hall effect sensor that is mounted each stator. The control system controls the flux rise when the armature is within the landing zone of the armature against the stator to match the spring rate of axially opposed springs in the actuator.
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