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公开(公告)号：US20210165414A1
公开(公告)日：2021-06-03
申请号：US17264116
申请日：2019-09-18
Applicant: KOMATSU LTD.
Inventor： Masanori AIZAWA , Kenjiro SHIMADA
Abstract: A system includes a conveyance vehicle, and a work machine that loads materials onto the conveyance vehicle. A first processor of a work machine determines a target stop position of a conveyance vehicle based on a position of the work machine, a target offset distance, and the direction of the loading position. A second processor of the conveyance vehicle acquires data indicative of the target stop position of the conveyance vehicle from the work machine. The second processor controls the conveyance vehicle to move the conveyance vehicle to the target stop position.
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公开(公告)号：US20210148093A1
公开(公告)日：2021-05-20
申请号：US17045950
申请日：2019-08-26
Applicant: KOMATSU LTD.
Inventor： Kenjiro SHIMADA
Abstract: A system includes a receiver mounted on a work machine, and a processor. The receiver receives a signal usable to identify a position of the work machine. The processor acquires a position of the receiver from the signal received by the receiver. The processor acquires a calculated position of a calibration point in the work machine by calculating a position of the calibration point from the position of the receiver. The processor acquires an actual position of the calibration point. The processor generates calibration data usable to calibrate a position of a reference point in the work machine by comparing the actual position with the calculated position of the calibration point.
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公开(公告)号：US20220251802A1
公开(公告)日：2022-08-11
申请号：US17616263
申请日：2020-06-30
Applicant: KOMATSU LTD.
Inventor： Tomoki KONDA , Kenjiro SHIMADA , Kazuhiro HATAKE , Yusuke SAIGO
Abstract: Occurrence of a skid due to revolution of a revolving unit is suppressed. A work machine includes a traveling unit, a revolving unit revolvably mounted on the traveling unit, and a controller that controls operations of the work machine. The controller determines whether or not a skid of the traveling unit has occurred in a revolving operation of the revolving unit during an automatic operation of the work machine. When the controller determines that the skid has occurred, it performs processing for weakening rotational inertial force generated in the revolving operation.
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公开(公告)号：US20210079629A1
公开(公告)日：2021-03-18
申请号：US16613302
申请日：2017-08-29
Applicant: KOMATSU LTD.
Inventor： Kazuhiro HASHIMOTO , Kenjiro SHIMADA , Toshihiro KAWANO , Yosuke YAMAGUCHI
Abstract: A control system for a work includes an operating device and a controller. The operating device outputs an operation signal indicative of an operation by an operator. The controller is in communication with the operating device. The controller determines a target profile of a terrain to be worked on. The controller generates a command signal to operate the work implement according to the target profile. The controller receives the operation signal from the operating device. The controller determines an operation of the work implement based on the operation signal. The controller corrects the target profile according to the operation by the operator when the operation of the work implement by the operator is performed.
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公开(公告)号：US20190049973A1
公开(公告)日：2019-02-14
申请号：US15754435
申请日：2017-08-08
Applicant: KOMATSU LTD.
Inventor： Kazuhiro HASHIMOTO , Kenjiro SHIMADA , Kazuhiko HAYASHI , Yousuke YAMAGUCHI
Abstract: A control system for a work vehicle includes a sensor and a controller. The sensor outputs a signal indicating an actual traveling direction of the work vehicle. The controller communicates with the sensor. The controller is programmed so as to execute the following processing. The controller acquires the actual traveling direction of the work vehicle. The controller sets the actual traveling direction as a target traveling direction when a condition that indicates that the work vehicle has started straight travel has been met. The controller calculates a bearing difference between the target traveling direction and the actual traveling direction. The controller moves the work implement at a target tilt angle corresponding to the bearing difference so as to reduce the bearing difference.
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Patent Agency Ranking
公开(公告)号：US20220316174A1
公开(公告)日：2022-10-06
申请号：US17618954
申请日：2020-06-30
Applicant: KOMATSU LTD.
Inventor： Tomoki KONDA , Takeshi OI , Kenjiro SHIMADA , Kenji OHIWA
Abstract: A work machine comprises: a work implement; a hydraulic cylinder; a hydraulic pump that supplies the hydraulic oil to the hydraulic cylinder via a hydraulic circuit; a relief valve that can set a relief pressure of the hydraulic circuit to either a first set pressure or a second set pressure higher than the first set pressure; a detection unit that detects at least one of a pressure of the hydraulic oil in the hydraulic circuit and a speed of the work implement; and a relief pressure changing unit that changes a relief pressure of the relief valve from the first set pressure to the second set pressure based on a detection value of at least one of the pressure of the hydraulic oil in the hydraulic circuit and the speed of the work implement when the controlled state of the work implement is the excavation state.
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公开(公告)号：US20220162832A1
公开(公告)日：2022-05-26
申请号：US17440922
申请日：2020-05-22
Applicant: KOMATSU LTD.
Inventor： Tomoki KONDA , Kenjiro SHIMADA , Kazuhiro HATAKE , Yusuke SAIGO
Abstract: A work machine comprises: a travel unit; a swing unit provided on the travel unit swingably; an angular velocity sensor that is attached to the swing unit and outputs an azimuthal angular velocity of the swing unit; a measurement device that measures an azimuth of the swing unit; and a controller that corrects the azimuthal angular velocity based on azimuth information measured by the measurement device and controls the swing unit based on the corrected azimuthal angular velocity.
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公开(公告)号：US20210372086A1
公开(公告)日：2021-12-02
申请号：US16975153
申请日：2019-03-15
Applicant: KOMATSU LTD.
Inventor： Masanori AIZAWA , Kenjiro SHIMADA , Tomoki KONDA
Abstract: A system controls a work machine that loads materials onto a conveyance vehicle. The system includes a controller and a detection device. The controller controls the work machine in an automatic control mode in which work is performed automatically. The detection device detects an approach of the conveyance vehicle toward the work machine. The automatic control mode includes a loading mode in which the work machine is caused to move to perform loading work for loading onto the conveyance vehicle, and an other mode other than the loading mode. The other mode includes at least one of a mode for gathering fallen materials and a digging mode for further increasing the materials by digging. The controller causes the automatic control mode to transition from the other mode to the loading mode when the approach of the conveyance vehicle is detected.
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公开(公告)号：US20180038067A1
公开(公告)日：2018-02-08
申请号：US15658769
申请日：2017-07-25
Applicant: KOMATSU LTD.
Inventor： Kazuhiro HASHIMOTO , Kenjiro SHIMADA
IPC: E02F3/84
CPC classification number: E02F3/847 , E02F9/205 , E02F9/262 , G01C15/002 , G05D3/12
Abstract: A controller is configured to acquire current terrain information indicating the current terrain in the travel direction of a work vehicle. the controller is configured to generate an inclined virtual surface extending form the current position of the work vehicle. The controller is configured to decide the soil volume of the current terrain located above the virtual surface. The controller is configured to set the virtual surface in which the soil volume of the current terrain becomes a predetermined target soil volume to be a virtual design surface. The controller is configured to generate a command signal to a work implement of the work vehicle to move the work implement along the virtual design surface.
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公开(公告)号：US20210310219A1
公开(公告)日：2021-10-07
申请号：US17056136
申请日：2019-08-26
Applicant: KOMATSU LTD.
Inventor： Masanori AIZAWA , Kenjiro SHIMADA , Yuki TSUZUKI
Abstract: A system includes a work machine, a camera, and a processor. The camera captures an image including a periphery of the work machine. A processor acquires image data indicative of a captured image captured by a camera. The processor acquires, from image data, a specific object present within the captured image and a distance from the work machine to the specific object by performing image analysis using an object detection model. The object detection model is trained an image of the specific object and the distance to the specific object. The processor controls the work machine based on the distance from the work machine to the specific object when the specific object is detected in the captured image.
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