Work machine
AssigneeHitachi Construction Machinery Co., Ltd.
InventorsShuuichi Meguriya, Shiho Izumi
Life of this patent
Estimating the term…
Abstract
A controller 20 mounted on a hydraulic excavator 1 that is able to perform machine control transmits work situation parameters (machine body position, hydraulic working fluid temperature, bucket weight, and target surface gradient) to a management server 71, receives, from the management server, control command correction values that are calculated by the management server on the basis of the work situation parameters and that represent correction values for correcting control commands, and controls hydraulic actuators 5, 6, and 7 with corrected control commands that represent the control commands corrected on the basis of the control command correction values.
Claims5
A work machine comprising:
- a multi-joint work implement that forms a target surface with a bucket;
- a plurality of hydraulic actuators that drive the work implement;
- a controller that is configured to calculate a control command for at least one of the plurality of hydraulic actuators to hold an operation locus of the bucket above the target surface on a basis of a distance from the work implement to the target surface, and to control the at least one of the hydraulic actuators on a basis of the control command;
- and
- a communication device that performs bidirectional communication with a management server,
- wherein the controller
- transmits work situation parameters of the work machine to the management server,
- receives, from the management server, a control command correction value that is computed by the management server on a basis of the work situation parameter and that represents a correction value for correcting the control command, and
- controls the at least one of the hydraulic actuators with a corrected control command that represents the control command corrected on a basis of the control command correction value, wherein the controller is configured to calculate an average claw tip error value that represents an average value of differences between the target surface and the operation locus of a claw tip of the bucket when the controller controls at least one of the hydraulic actuators on a basis of the corrected control command, and to transmit the calculated average claw tip error value to the management server, and
- the control command correction value is adjusted on a basis of the average claw tip error value transmitted to the management server in a past.
Dependencies are inferred from the claim text.