公开(公告)号：US20170341915A1

公开(公告)日：2017-11-30

申请号：US15509965

申请日：2016-05-31

Applicant: Komatsu Ltd.

Inventor： Shinji Kaneko ,  Jun Hashimoto ,  Yuji Kikuyama

IPC: B66F9/075 ,  B62D15/02 ,  B62D5/09

CPC classification number: B66F9/07568 ,  B62D5/06 ,  B62D5/09 ,  B62D15/0215

Abstract: A method of controlling a work vehicle including a steering cylinder operating a steering wheel by hydraulic oil supplied thereto, a steering member receiving an input for operating the steering wheel, and a steering valve unit which is connected to the steering member and supplies the hydraulic oil to the steering cylinder, the method includes: obtaining a speed of the work vehicle and a steering angle of the steering wheel; and decreasing a correction factor for correcting a deviation amount of actual steering angle information of the steering wheel with respect to target information as information on a target steering angle of the steering wheel with respect to an operation amount of the steering member when the speed of the work vehicle increases in a case where the steering angle of the steering wheel obtained based on the steering angle is in a predetermined range from a neutral position.

公开(公告)号：US09637126B2

公开(公告)日：2017-05-02

申请号：US14126893

申请日：2013-02-28

Applicant: Komatsu Ltd.

Inventor： Yuji Kikuyama ,  Yoshitaka Onodera

IPC: B60W30/18 ,  B66F9/075 ,  B60L15/20 ,  B66F9/24 ,  B60L7/14

CPC classification number: B60W30/18 ,  B60L7/14 ,  B60L15/20 ,  B60L15/2009 ,  B60L2200/42 ,  B60L2220/12 ,  B60L2220/44 ,  B60L2240/12 ,  B60L2240/14 ,  B60L2240/423 ,  B60L2240/642 ,  B60L2250/28 ,  B60L2270/145 ,  B66F9/07572 ,  B66F9/24 ,  Y02T10/645 ,  Y02T10/72 ,  Y02T10/7275 ,  Y02T10/7291 ,  Y02T90/16

Abstract: A work vehicle has a running motor and includes a first controller generating a speed command value to control the motor and adding an actual running speed of the work vehicle to a relationship between a torque command value for a torque in the motor and a running speed of the work vehicle to generate a first torque command value and a second controller generating a second torque command value based on the speed command value and the actual running speed, controls the motor using a smaller one of the first and second torque command values when the work vehicle moves forward, and controls the motor using a greater one of them when the work vehicle moves backward. The first controller determines the speed command value based on an accelerator opening used to regulate the running speed, the actual running speed, and an actual movement direction of the work vehicle.

公开(公告)号：US09045045B2

公开(公告)日：2015-06-02

申请号：US14232742

申请日：2013-02-28

Applicant: Komatsu Ltd.

Inventor： Yoshitaka Onodera ,  Yuji Kikuyama ,  Yoshiaki Nagashima ,  Hiroyuki Kijima

IPC: B60L9/00 ,  B60L15/10 ,  B66F9/075 ,  B60L15/20

CPC classification number: B60L15/10 ,  B60L1/003 ,  B60L11/1803 ,  B60L15/20 ,  B60L15/2072 ,  B60L2200/42 ,  B60L2210/10 ,  B60L2240/12 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2250/16 ,  B60L2250/24 ,  B60L2250/26 ,  B60W50/0098 ,  B60W2510/0657 ,  B60W2540/10 ,  B60W2710/083 ,  B66F9/07572 ,  B66F9/24 ,  Y02T10/6252 ,  Y02T10/642 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y02T10/7216 ,  Y02T10/7275

Abstract: A work vehicle is provided with a traveling motor, and includes a first control unit generating a speed command value for controlling the motor and changing the speed command value according to passage of time when an opening of an accelerator that adjusts a traveling speed is larger than 0, and assigning an actual traveling speed of the work vehicle to a relationship between a torque command value that is a command value of torque to be generated by the motor and the traveling speed of the work vehicle to generate a first torque command value; and a second control unit generating a second torque command value based on the speed command value generated by the first control unit and the actual traveling speed, and controlling the motor based on the first torque command value or the second torque command value.

Abstract translation: 工作车辆设置有行驶电动机，并且包括：第一控制单元，其产生用于控制电动机的速度指令值，并且当调节行驶速度的加速器的开度大于时间时根据时间的变化来改变速度指令值 0，并且将作业车辆的实际行驶速度分配为作为马达产生的转矩的指令值的转矩指令值与作业车辆的行驶速度之间的关系，生成第一转矩指令值; 以及第二控制单元，基于由第一控制单元产生的速度指令值和实际行驶速度产生第二转矩指令值，并且基于第一转矩指令值或第二转矩指令值来控制电动机。

公开(公告)号：US20150039164A1

公开(公告)日：2015-02-05

申请号：US14232742

申请日：2013-02-28

Applicant: Komatsu Ltd.

Inventor： Yoshitaka Onodera ,  Yuji Kikuyama ,  Yoshiaki Nagashima ,  Hiroyuki Kijima

IPC: B60L15/10 ,  B60L15/20 ,  B66F9/075

CPC classification number: B60L15/10 ,  B60L1/003 ,  B60L11/1803 ,  B60L15/20 ,  B60L15/2072 ,  B60L2200/42 ,  B60L2210/10 ,  B60L2240/12 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2250/16 ,  B60L2250/24 ,  B60L2250/26 ,  B60W50/0098 ,  B60W2510/0657 ,  B60W2540/10 ,  B60W2710/083 ,  B66F9/07572 ,  B66F9/24 ,  Y02T10/6252 ,  Y02T10/642 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y02T10/7216 ,  Y02T10/7275

Abstract: A work vehicle is provided with a traveling motor, and includes a first control unit generating a speed command value for controlling the motor and changing the speed command value according to passage of time when an opening of an accelerator that adjusts a traveling speed is larger than 0, and assigning an actual traveling speed of the work vehicle to a relationship between a torque command value that is a command value of torque to be generated by the motor and the traveling speed of the work vehicle to generate a first torque command value; and a second control unit generating a second torque command value based on the speed command value generated by the first control unit and the actual traveling speed, and controlling the motor based on the first torque command value or the second torque command value.

Abstract translation: 工作车辆设置有行驶电动机，并且包括：第一控制单元，其产生用于控制电动机的速度指令值，并且当调节行驶速度的加速器的开度大于时间时根据时间的变化来改变速度指令值 0，并且将作业车辆的实际行驶速度分配为作为马达产生的转矩的指令值的转矩指令值与作业车辆的行驶速度之间的关系，生成第一转矩指令值; 以及第二控制单元，基于由第一控制单元产生的速度指令值和实际行驶速度产生第二转矩指令值，并且基于第一转矩指令值或第二转矩指令值来控制电动机。

公开(公告)号：US20140350799A1

公开(公告)日：2014-11-27

申请号：US14126893

申请日：2013-02-28

Applicant: Komatsu Ltd.

Inventor： Yuji Kikuyama ,  Yoshitaka Onodera

IPC: B60W30/18 ,  B66F9/075

CPC classification number: B60W30/18 ,  B60L7/14 ,  B60L15/20 ,  B60L15/2009 ,  B60L2200/42 ,  B60L2220/12 ,  B60L2220/44 ,  B60L2240/12 ,  B60L2240/14 ,  B60L2240/423 ,  B60L2240/642 ,  B60L2250/28 ,  B60L2270/145 ,  B66F9/07572 ,  B66F9/24 ,  Y02T10/645 ,  Y02T10/72 ,  Y02T10/7275 ,  Y02T10/7291 ,  Y02T90/16

Abstract: A work vehicle has a running motor and includes a first controller generating a speed command value to control the motor and adding an actual running speed of the work vehicle to a relationship between a torque command value for a torque in the motor and a running speed of the work vehicle to generate a first torque command value and a second controller generating a second torque command value based on the speed command value and the actual running speed, controls the motor using a smaller one of the first and second torque command values when the work vehicle moves forward, and controls the motor using a greater one of them when the work vehicle moves backward. The first controller determines the speed command value based on an accelerator opening used to regulate the running speed, the actual running speed, and an actual movement direction of the work vehicle.

Abstract translation: 工作车辆具有运行电动机，并且包括：第一控制器，其生成用于控制电动机的速度指令值，并将作业车辆的实际行驶速度与电动机中的转矩的转矩指令值的关系与运动速度 用于产生第一转矩指令值的作业车辆和基于速度指令值和实际行驶速度产生第二转矩指令值的第二控制器，当工作时使用第一和第二转矩指令值中较小的一个来控制电动机 当车辆向后移动时，车辆向前移动，并且使用其中较大的一个来控制电动机。 第一控制器基于用于调节作业车辆的行驶速度，实际行驶速度和实际移动方向的加速器开度来确定速度指令值。