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

Abstract

A control system for a work vehicle including a work implement comprises a first operating lever, a first operating member, and a controller. The first operating lever is for operating the work implement. The first operating member is provided on the first operating lever. The controller is programmed to control the work implement based on a designed terrain indicating a target shape of a work object. The controller is configured to change a position of the designed terrain in response to an operation of the first operating member when a performance condition is satisfied. The performance condition includes the first operating lever being located in a neutral position.

What is claimed is: 
     
         1 . A control system for a work vehicle including a work implement, the control system comprising
 a first operating lever for the work implement;   a first operating member provided on the first operating lever; and   a controller programmed to control the work implement based on a designed terrain indicating a target shape of a work object,   the controller being configured to change a position of the designed terrain in response to an operation of the first operating member when a performance condition is satisfied, the performance condition including the first operating lever being located in a neutral position.   
     
     
         2 . The control system according to  claim 1 , wherein
 the controller is configured to change the position of the designed terrain by a predetermined distance in response to the operation of the first operating member.   
     
     
         3 . The control system according to  claim 2 , wherein
 the controller is configured to change the position of the designed terrain by the predetermined distance once each time the first operating member is operated.   
     
     
         4 . The control system according to  claim 2 , further comprising
 an input device connected to the controller,   the controller being configured to change the predetermined distance in response to an operation of the input device.   
     
     
         5 . The control system according to  claim 2 , wherein
 the predetermined distance is a fixed value.   
     
     
         6 . The control system according to  claim 1 , further comprising
 a second operating member, the controller being configured to change the position of the designed terrain in response to an operation of the second operating member when the performance condition is satisfied, the change of the position of the designed terrain in response to the operation of the second operating member being different from the change of the designed terrain in response to the operation of the first operating member,   the controller being configured to change the position of the designed terrain upward in response to the operation of the first operating member and downward in response to an operation of the second operating member.   
     
     
         7 . The control system according to  claim 6 , wherein
 the controller is configured to change the position of the designed terrain upward by a predetermined distance in response to the operation of the first operating member, and   the controller is configured to change the position of the designed terrain downward by the predetermined distance in response to the operation of the second operating member.   
     
     
         8 . The control system according to  claim 6 , wherein
 the second operating member is provided on the first operating lever.   
     
     
         9 . The control system according to  claim 6 , further comprising
 a second operating lever, the second operating member being provided on the second operating lever,   the performance condition further including the second operating lever being located in a neutral position.   
     
     
         10 . A method of controlling a work vehicle having a work implement, the method comprising the steps of:
 receiving a positional signal indicating a position of a first operating lever for the work implement;   receiving an operating signal indicating operation of a first operating member provided on the first operating lever;   determining whether or not a performance condition is satisfied, the performance condition including the first operating lever being located in a neutral position; and   changing a position of a designed terrain in response to receiving the operating signal when the performance condition is satisfied, the designed terrain indicating a target shape of a work object.   
     
     
         11 . A work vehicle, comprising:
 work implement;   a first operating lever for the work implement;   a first operating member provided on the first operating lever; and   a controller programmed to control the work implement based on a designed terrain indicating a target shape of a work object,   the controller being configured to change a position of the designed terrain in response to an operation of the first operating member when a performance condition is satisfied, the performance condition including the first operating lever being located in a neutral position.