Komatsu Corporation

Yuki Shimano

Yoshiki Kami

Masashi Ichihara

Katsuhiro Ikegami

Jin Kitajima

Tomohiro Nakagawa

Toru Matsuyama

Takeshi Takaura

Hayato Matsumoto

Takuya Sonoda

Yuto Fujii

Daiki Arimatsu

Eiji Ishibashi

Kenjiro Shimada

Masanobu Seki

Satoru Shintani

Minetaka Nishimura

Kenji Ohiwa

Tsutomu Iwamura

Takashi Yokoo

Akinori Baba

Yasuo Kanemitsu

Yukinori Maeda

Jason Anetsberger

Shunichiro Kondo

A system includes a work machine having a work implement including a bucket, and a server capable of communicating with the work machine. The work machine transmits an identification number associated with the work machine to the server. The server obtains basic data based on the identification information and used for calculating the position of teeth of the bucket. The server transmits the obtained basic data to the work machine.

Work machine system and control method

An earthmoving machine of a work vehicle or the like includes: a work implement including a bucket having teeth; and a main controller that obtains design data based on a dimension obtained from manufacturing data of a component included in the work implement, and used for calculating the position of the teeth, and uses the design data to calculate the position of the teeth.

Earthmoving machine, calibration system, and method

A work equipment control device includes a bucket posture-determining unit, a working plane-determining unit, and a bucket control unit. The bucket posture-determining unit determines an angle of a bucket in global coordinates. The working plane-determining unit determines an angle of a working plane in the global coordinates indicating a target shape of an excavation object of work equipment. The bucket control unit controls the bucket such that a difference between the angle of the bucket and the angle of the working plane maintains a uniform angle.

Work equipment control device and work machine

When correcting an error caused by deviation of an attitude detection device with respect to a work machine including a swing body which swings, a working implement being attached to the swing body, the attitude detection device outputting an attitude of the work machine, the error is corrected by using a first position which is a position of a part of the work machine when the work machine is in a first attitude and a second position which is a position of the part when the work machine is in a second attitude.

Calibration device of work machine, work machine, and calibration method of work machine

An earthmoving machine includes a work implement, a distance calculation unit, and a hydraulic cylinder control unit. The work implement includes a boom, an arm, and a bucket. The distance calculation unit calculates a distance between a monitoring point in the bucket and design topography representing an aimed shape of a land grading target. The hydraulic cylinder control unit outputs a command signal for lowering the boom when the distance between the monitoring point and the design topography is equal to or smaller than a prescribed value and when the bucket is expected to move in such a direction that the monitoring point moves away from the design topography as a result of an operation of the arm.

Earthmoving machine and control method

Provided is a display system including: a display unit which displays an image; a vehicle body position data acquisition unit which acquires vehicle body position data indicating a position of a vehicle body supporting a work machine; a process position data storage unit which stores process position data indicating a process position of a process target processed by the work machine; and a display controller which displays an image indicating the process position based on the process position data and an image indicating a specific position of the vehicle body on the display unit.

Display system and construction machine

A hydraulic excavator has a boom, an arm, a bucket, and a boom cylinder which drives the boom. A load value within the bucket is computed based on a load of the boom cylinder, and the load value obtained by computing is corrected based on an acceleration of extension/retraction of the boom cylinder.

Work machine and method for controlling work machine

A work vehicle includes: a hydraulic operation apparatus for operating an actuator; a main controller configured to generate a command current in accordance with an amount of operation of the operation apparatus; an electromagnetic proportional control valve configured to generate command pilot pressure in accordance with the command current; and a main valve configured to adjust a flow rate of hydraulic oil for operating the actuator based on the command pilot pressure. The electromagnetic proportional control valve is provided in a pilot oil passage that connects a pilot pump and a main valve, and configured to utilize hydraulic pressure supplied from the pilot pump to generate command pilot pressure. The operation apparatus is provided in an operation apparatus oil passage that is different from the pilot oil passage.

Work vehicle and method of controlling the same

A control device for a construction machine includes an operational amount data acquisition unit configured to acquire operational amount data indicating an operational amount of the working unit, an operation determination unit configured to determine a non-operation state of a bucket on the basis of the operational amount data, a bucket control determination unit configured to determine whether bucket control conditions are satisfied, on the basis of determination of the non-operation state, and a working unit control unit configured to output a control signal for controlling the bucket to maintain a state of the working unit, when the bucket control conditions are determined to be satisfied.

Control device for construction machine and method of controlling construction machine

A control system for a work vehicle includes at least one sensor, an operating device, and a controller. The operating device includes at least one operating member. The controller is programmed to control a work implement of the work vehicle based on signals from the at least one sensor and the operating device. The controller is further programmed to use the signals to obtain a distance between the work implement and a design terrain which represents a target shape of a work object, and to determine whether a surface compaction determination condition indicating that work performed by the work implement is surface compaction work is satisfied. The controller executes a surface compaction control in which a velocity of the work implement toward the design terrain is limited in response to the distance between the work implement and the design terrain when the surface compaction determination condition is satisfied.

Control system for work vehicle, control method, and work vehicle

A distance obtaining unit obtains the distance between a work implement and a design terrain. A work aspect determining unit determines a work aspect by the work implement. A limit velocity deciding unit limits the velocity of the work implement when the distance between the work implement and the design terrain becomes smaller. When the work aspect is surface compaction work and the distance between the work implement and the design terrain is within a first range of at least a portion that is equal to or less than a predetermined first distance, the limit velocity deciding unit increases the limit velocity of the work implement in comparison to when the work aspect is an aspect of a work other than surface compaction, or cancels the limiting of the velocity of the work implement.

A control system for a work vehicle having a work implement includes a first operating lever for the work implement, a first operating member and a controller. The first operating member is provided on the first operating lever. The controller is configured to perform an automatic control of the work implement. The controller is configured to perform a function of the automatic control, which is allocated to the first operating member, in response to operating the first operating member when a performance condition, including that the first operating lever is located in a neutral position thereof, is satisfied.

Control system for work vehicle, control method and work vehicle

A control device for a work machine is a device for controlling a working unit of a work machine to excavate an object to be excavated. The control device includes a control unit for controlling the working unit to prevent a working implement of the working unit from crossing a predetermined target profile, and a switching unit for defining the target profile as an offset profile separated by a predetermined distance from a target excavation profile that is a target profile for finishing of the object to be excavated or the target excavation profile, based on an attitude of the working implement relative to the target excavation profile.

Control device for work machine, work machine, and method of controlling work machine

A control deciding unit for deciding to execute a leveling control for controlling a work implement so that the work implement moves along a design terrain when a leveling determination condition is satisfied. The control deciding unit decides to execute a surface compaction control for limiting the velocity of the work implement toward the design terrain in response to the distance between the work implement and the design terrain when a surface compaction determination condition is satisfied. The control deciding unit maintains the surface compaction control when the leveling determination condition is satisfied while the surface compaction control is being executed.

The present invention includes a stroke sensor which is arranged on a hydraulic cylinder and measures a stroke length of the hydraulic cylinder; a rotary encoder and a magnetic force sensor which measure a reset reference point to reset a value of the stroke length measured by the stroke sensor; a stroke end detection processing unit which detects a stroke end position of the hydraulic cylinder; a calibration processing unit which calibrates the measured value of the stroke length when the reset reference point and/or the stroke end position is detected; an HMI monitor which displays an entire work machine mounted with the hydraulic cylinder when an initial calibration work for the hydraulic cylinder is carried out; and a highlight display processing unit that highlights a moving portion to drive a hydraulic cylinder to be calibrated along with an indication of a driving direction.

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Suita, Japan

Yuki Shimano