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公开(公告)号：US09200426B2
公开(公告)日：2015-12-01
申请号：US14176355
申请日：2014-02-10
Applicant: KOMATSU LTD.
Inventor： Kazuhiko Hayashi , Kenji Okamoto , Kenjiro Shimada
CPC classification number: E02F3/844 , E02F3/7609 , E02F3/7618 , E02F3/845
Abstract: A blade control system includes an angle obtaining part, an open ratio setting part and a lift cylinder controlling part. The angle obtaining part is configured to obtain an angle of a lift frame with respect to a designed surface. The open ratio setting part is configured to set an open ratio based on the angle. The lift cylinder controlling part is configured to open a proportional control valve at the open ratio for elevating the blade when a distance between the designed surface and an edge of a blade is determined to be less than or equal to a threshold.
Abstract translation: 叶片控制系统包括角度获得部分，开放比率设定部分和提升缸控制部分。 角度获取部被配置为获得相对于设计表面的提升框架的角度。 打开比率设定部被配置为基于该角度设定开放比率。 提升缸控制部被配置为当设计的表面和叶片的边缘之间的距离被确定为小于或等于阈值时，打开比例控制阀以开放比率升高叶片。
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公开(公告)号：US09026319B2
公开(公告)日：2015-05-05
申请号：US14113605
申请日：2012-11-20
Applicant: Komatsu Ltd.
Inventor： Kazuhiko Hayashi , Kenjiro Shimada , Kenji Okamoto
CPC classification number: E02F3/844 , E02F3/7609 , E02F3/845
Abstract: When a blade load is reduced from a value greater than or equal to a first set load value to a value less than the first set load value, a blade control device is configured to set a virtual designed surface to be closer to a blade than a designed surface is, and is configured to allow the blade to pivot above the virtual designed surface.
Abstract translation: 当刀片负载从大于或等于第一设定负载值的值减小到小于第一设定负载值的值时，刀片控制装置被配置为将虚拟设计表面设置为比虚拟设计的表面更靠近刀片 并且被配置为允许刀片在虚拟设计表面上方枢转。
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公开(公告)号：US20150019086A1
公开(公告)日：2015-01-15
申请号：US14113605
申请日：2012-11-20
Applicant: KOMATSU LTD.
Inventor： Kazuhiko Hayashi , Kenjiro Shimada , Kenji Okamoto
CPC classification number: E02F3/844 , E02F3/7609 , E02F3/845
Abstract: When a blade load is reduced from a value greater than or equal to a first set load value to a value less than the first set load value, a blade control device is configured to set a virtual designed surface to be closer to a blade than a designed surface is, and is configured to allow the blade to pivot above the virtual designed surface.
Abstract translation: 当刀片负载从大于或等于第一设定负载值的值减小到小于第一设定负载值的值时，刀片控制装置被配置为将虚拟设计表面设置为比虚拟设计的表面更靠近刀片 并且被配置为允许刀片在虚拟设计表面上方枢转。
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公开(公告)号：US10671074B2
公开(公告)日：2020-06-02
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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