| 摘要 |
<p>A control unit for a work machine that allows automatically obtaining optimal operability even when the weight of a work arm in the work machine is changed is provided. In a work machine where at least a part of a work arm to be operated by a fluid pressure actuator 4bm, 5st, 6bk is provided so as to be replaceable, a control unit for a work machine includes: a pilot-operated control valve 24, 25, 26, 27, 28 that controls the fluid pressure actuator 4bm, 5st, 6bk; a proportional solenoid valve 24ev, 25ev, 26ev, 27ev, 28ev that pilot-controls the pilot-operated control valve 24, 25, 26, 27, 28 by a pilot control pressure according to an electrical signal corresponding to a manual operation amount; a measuring means 34bm, 35st, 36bk that measures a weight of at least the part of the work arm; and a controller 31 that converts characteristics between the manual operation amount and the pilot control pressure of the proportional solenoid valve 24ev, 25ev, 26ev, 27ev, 28ev to characteristics according to the weight of the work arm measured by the measuring means 34bm, 35st, 36bk.</p> |
