Method and Hydraulic Control System Having Swing Motor Energy Recovery
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United States of America Patent
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N/A
Issued Date -
Jul 31, 2014
app pub date -
Jan 28, 2013
filing date -
Jan 28, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A hydraulic control system includes a swing control valve between a pump and a swing motor to control flow to/from the swing motor, and a selector valve between an accumulator and the swing motor to regulate fluid flow. A controller is configured to receive inputs indicative of the pressure differential between the accumulator and conduit between the pump and swing motor, and a swing motor command, calculate a target swing motor flow based on the swing motor command input, and modulate operation of the swing control valve and the selector valve to regulate a swing speed.
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