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United States of America Patent

APP PUB NO 20200232186A1
SERIAL NO

16492363

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A controller (25) of the hydraulic excavator (1) includes a signal separation section (150) that separates each of target speed signals for a plurality of front members (8, 9, 10) into a low frequency component and a high frequency component, a high fluctuation target speed calculation section (143) that allocates the separated high frequency components preferentially to a front member having a relatively small inertial load to calculate high fluctuation target speeds individually for the plurality of front members, a high fluctuation target actuator speed calculation section (141c) that calculates high fluctuation target speeds individually for the plurality of actuators from the high fluctuation target speeds for the plurality of front members, a low fluctuation target actuator speed calculation section (141b) that calculates low fluctuation target speeds individually for the plurality of actuators from the low frequency components separated by the signal separation section, and an actuator controller (200) that controls the plurality of actuators individually based on values obtained by adding the high fluctuation target speeds and the low fluctuation target speeds.

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Patent Owner(s)

Patent OwnerAddress
HITACHI CONSTRUCTION MACHINERY CO LTDBUNKYO-KU TOKYO 112-8563

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
NAKANO, Hisami Tsuchiura-shi, JP 11 2
SUZUKI, Yusuke Tsuchiura-shi, JP 258 1935
TANAKA, Hiroaki Kasumigaura-shi, JP 434 4439

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