Control system for construction machine
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United States of America Patent
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Dec 5, 2017
Grant Date -
Jun 4, 2015
app pub date -
Jul 23, 2013
filing date -
Jul 25, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A control system for a construction machine includes: a boom cylinder; a boom switching valve; a fluid pressure motor adapted to drive a motor generator by being rotated by means of a return fluid guided from a piston side chamber; a regeneration control valve adapted to adjust a first supply amount serving as a supply amount of a working fluid supplied from the piston side chamber to the boom switching valve, and a second supply amount serving as a supply amount of the working fluid supplied from the piston side chamber to the fluid pressure motor; and a controller adapted to control the regeneration control valve so that the second supply amount becomes smaller than the first supply amount in a case where a stroke amount of a spool becomes an upper limit value or more.
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