Solenoid activated closure device
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United States of America Patent
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May 21, 1985
Grant Date -
N/A
app pub date -
Jul 20, 1982
filing date -
Jul 20, 1982
priority date (Note) -
Expired
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Abstract
A solenoid closure servo control eliminates impact of the solenoid poles against each other upon closure of the device. A model of the device closure is obtained from a parameter of initial gap. During closure of the device, the rate of closure of the gap of the solenoid and the force in balance between the spring and magnetic force is calculated and compared to the model. Imbalances are corrected by applying a corrective voltage to the solenoid coils.
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