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公开(公告)号：US20250116085A1
公开(公告)日：2025-04-10
申请号：US18684009
申请日：2022-09-29
Applicant: Komatsu Ltd.
Inventor： Hikaru SUZUKI , Tsutomu IWAMURA , Sho NOZAKI , Ryuji KANDA , Daishi IWANAGA , Tomokazu HIRAO , Yuta UCHIDA , Yuki SHIMANO , Jun SASAKI , Jin KITAJIMA
Abstract: A measurement value acquisition unit acquires measurement values from a plurality of sensors. A posture calculation unit calculates a posture of an attachment with respect to a vehicle body based on the measurement values. An operation signal acquisition unit acquires an operation signal from an operation device. An intervention control unit generates a control signal for the tilt rotator so that the posture of the attachment is held, based on the operation signal. An output unit outputs the generated control signal.
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公开(公告)号：US20180002901A1
公开(公告)日：2018-01-04
申请号：US15704400
申请日：2017-09-14
Applicant: KOMATSU LTD.
Inventor： Yuki SHIMANO , Jin KITAJIMA , Yoshiki KAMI , Masashi ICHIHARA
CPC classification number: E02F9/262 , E02F3/32 , E02F3/435 , E02F9/2025 , E02F9/2292 , E02F9/2296 , E02F9/265
Abstract: 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.
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公开(公告)号：US20240240438A1
公开(公告)日：2024-07-18
申请号：US18574179
申请日：2022-10-03
Applicant: KOMATSU LTD.
Inventor： Takashi YOKOO , Yuki SHIMANO , Yousuke UCHIDA
CPC classification number: E02F9/265 , E02F9/2025 , E02F9/261 , G06T3/40
Abstract: A display system includes a display and a controller. The controller acquires machine position data indicative of a position of a work machine. The controller acquires a separation distance in a width direction of the revolving body between a work point of the work implement and a revolving axis. The work point is spaced from the revolving axis in the width direction. The controller acquires target position data indicative of a target position of the work implement. The controller causes the display to display a guideline indicative of the target position and a guide image indicative of the position of the work machine based on the machine position data and the target position data. The guide image includes a first image and a second image. The first image indicates a position of the revolving axis. The second image indicates a position away from the revolving axis by the separation distance.
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公开(公告)号：US20200157774A1
公开(公告)日：2020-05-21
申请号：US16619585
申请日：2018-07-04
Applicant: KOMATSU LTD.
Inventor： Yuki SHIMANO , Tomohiro NAKAGAWA
Abstract: 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.
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公开(公告)号：US20160258135A1
公开(公告)日：2016-09-08
申请号：US14409209
申请日：2014-09-10
Applicant: KOMATSU LTD.
Inventor： Yuki SHIMANO , Yuto FUJII , Takeshi TAKAURA
CPC classification number: E02F9/265 , E02F3/32 , E02F3/435 , E02F9/2029 , E02F9/2221 , E02F9/262
Abstract: A stop control unit carries out control, when a moving speed of a bucket in a direction toward target design topography is the same in both of a first specifying state in which a bucket weight specifying portion specifies a weight of the bucket as large and a second specifying state in which the bucket weight specifying portion specifies a weight of the bucket as small, such that the moving speed of the bucket in the direction toward the target design topography is reduced from a position more distant from the target design topography in the first specifying state than in the second specifying state.
Abstract translation: 当铲斗重量指定部指定铲斗重量大的第一指定状态和铲斗重量指定部分指定铲斗重量的第二指定状态和铲斗重量指定部分指定铲斗重量的第二指定状态时，停止控制单元执行在朝向目标设计地形的方向上的铲斗的移动速度相同的控制 指定铲斗重量指定部指定铲斗的重量的小的状态，使得在朝向目标设计地形的方向上的铲斗的移动速度从第一指定中的距离目标设计地形更远的位置减小 状态比第二指定状态。
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Patent Agency Ranking
公开(公告)号：US20250129578A1
公开(公告)日：2025-04-24
申请号：US18685062
申请日：2022-09-29
Applicant: Komatsu Ltd.
Inventor： Hikaru SUZUKI , Tsutomu IWAMURA , Sho NOZAKI , Ryuji KANDA , Daishi IWANAGA , Tomokazu HIRAO , Yuta UCHIDA , Yuki SHIMANO , Jun SASAKI , Jin KITAJIMA
Abstract: A measured value acquisition unit acquires measured values from a plurality of sensors. A position and posture calculation unit calculates a current posture of the work tool, based on the measured values. A target posture determination unit determines a virtual rotation axis, based on the calculated current posture of the work tool, when a predetermined control start condition is satisfied. A rotation amount calculation unit generates a control signal of the tilt rotator for rotating the work tool from the current posture to a target posture by a predetermined amount around the virtual rotation axis. A control signal output unit outputs the generated control signal.
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公开(公告)号：US20200080287A1
公开(公告)日：2020-03-12
申请号：US16615987
申请日：2018-07-04
Applicant: KOMATSU LTD.
Inventor： Yuki SHIMANO , Tomohiro NAKAGAWA
Abstract: 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.
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公开(公告)号：US20190078291A1
公开(公告)日：2019-03-14
申请号：US15757096
申请日：2017-04-10
Applicant: KOMATSU LTD.
Inventor： Yuki SHIMANO , Toru MATSUYAMA , Takuya SONODA
Abstract: 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.
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公开(公告)号：US20250137224A1
公开(公告)日：2025-05-01
申请号：US18683609
申请日：2022-09-29
Applicant: Komatsu Ltd.
Inventor： Hikaru SUZUKI , Tsutomu IWAMURA , Sho NOZAKI , Ryuji KANDA , Daishi IWANAGA , Tomokazu HIRAO , Yuta UCHIDA , Yuki SHIMANO , Jun SASAKI , Jin KITAJIMA
Abstract: A measurement value acquisition unit acquires measurement values from a plurality of sensors. A posture calculation unit calculates a posture of an attachment with respect to a vehicle body based on the measurement values. An intervention control unit determines a virtual rotation axis based on the calculated posture of the attachment. An operation signal acquisition unit acquires an operation signal for operating the support portion from an operation device. An intervention control unit generates a control signal for the tilt rotator to rotate the attachment around the virtual rotation axis so that an axial direction of the virtual rotation axis in a global coordinate system is held and a design surface and teeth of the attachment are approximately parallel to each other, based on the calculated posture of the attachment and an operation amount indicated by the operation signal for operating the support portion. An output unit outputs the generated control signal.
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公开(公告)号：US20190078300A1
公开(公告)日：2019-03-14
申请号：US15757085
申请日：2017-01-10
Applicant: KOMATSU LTD.
Inventor： Yuki SHIMANO , Takuya SONODA , Kenji OHIWA
Abstract: 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.
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