Control system for work vehicle, and method for setting trajectory of work implement

A method for setting a trajectory of a work implement of a work vehicle, the method comprising:

• acquiring current terrain data indicating current terrain to be worked;
• deciding a target design terrain displaced vertically from the current terrain by referring to target displacement data indicating target displacement of the work implement according to an amount of movement from a work start position;
• setting the target design terrain as the trajectory of the work implement and
• generating a command signal to move the work implement toward the target design terrain.

A control system for a work vehicle including a work implement, the control system comprising:

• a controller programmed to
• acquire current terrain data indicating current terrain to be worked,
• decide a target design terrain displaced vertically from the current terrain by referring to a target load parameter that defines relation between an amount of movement from a work start position and a target load parameter that defines a load on the work implement, and
• generate a command signal to move the work implement toward the target design terrain.