System and method for controlling work machine, and work machine

A method for controlling a work machine including a work implement, the method comprising:

• acquiring current position data indicative of a current position of the work machine;
• acquiring actual topography data indicative of an actual topography;
• acquiring default target displacement data that defines a target displacement according to a movement amount of the work machine in a movement direction of the work machine;
• acquiring a work interval indicative of a distance between a previous start position of work by the work machine and a current start position positioned rearward of the previous start position with respect to the movement direction;
• generating modified data in which the default target displacement data is modified according to the work interval;
• referring to the modified data to determine the target displacement according to the movement amount of the work machine from the current start position;
• determining a topography in which the actual topography data is vertically displaced downward by the target displacement as a target profile;
• and
• moving the work implement according to the target profile.

A work machine comprising:

• a work implement;
• a sensor configured to detect a current position of the work machine;
• and
• a controller configured to communicate with the sensor, the controller being configured to
• acquire current position data indicative of the current position of the work machine,
• acquire actual topography data indicative of an actual topography,
• acquire default target displacement data that defines a target displacement according to a movement amount of the work machine in a movement direction of the work machine,
• acquire a work interval indicative of a distance between a previous start position of work by the work machine and a current start position positioned rearward the previous start position with respect to the movement direction,
• generate modified data in which the default target displacement data is modified according to the work interval,
• refer to the modified data to determine the target displacement according to the movement amount of the work machine from the current start position,
• determine topography data in which the actual topography data is vertically displaced downward by the target displacement as a target profile, and
• move the work implement according to the target profile.