US 11,629,477 B2 · Self-propelled work vehicle and control method for blade stabilization accounting for chassis movement

Abstract

Systems and methods are disclosed herein for controlling a work implement (e.g., front-mounted blade) relative to a work vehicle to produce a desired profile in a ground surface. Chassis-mounted sensor(s) detect an actual pitch velocity and an actual pitch angle of the chassis relative to the ground. Further sensor(s) detect an actual lift position of the blade relative to the chassis. A desired profile to be produced by the blade with respect to the ground surface is determined, for example via an automated grade control system, via manually-initiated trigger(s), and/or via time-based rolling averages of detected values. A position of the implement is automatically controlled as a function of each of the actual pitch velocity, the actual pitch angle of the chassis relative to the ground, and the actual lift position of the work implement relative to the chassis, corresponding to the desired profile with respect to the ground surface.

Claims20

Dependent claims

A method of controlling a blade relative to a chassis of a self- propelled work vehicle to produce a desired profile in a ground surface, wherein the blade is coupled to the chassis and further at least lifted relative to the chassis via at least a blade positioning unit, the method comprising:

detecting, via a first set of one or more chassis-mounted sensors, an actual pitch velocity of the chassis and an actual pitch angle of the chassis relative to the ground;
detecting, via a second set of one or more sensors associated with the blade positioning unit, an actual lift position of the blade relative to the chassis;
determining a desired profile to be produced by the blade with respect to the ground surface;
and
automatically controlling a position of the blade as a function of each of the actual pitch velocity of the chassis, the actual pitch angle of the chassis relative to the ground, and the actual lift position of the work implement relative to the chassis, corresponding to the desired profile with respect to the ground surface.

2 more elements

A self-propelled work vehicle comprising:

a chassis supported by a plurality of ground engaging units;
a blade coupled to a front of the chassis in a working direction via a positioning unit configured to at least raise or lower the blade relative to the chassis;
a first set of one or more sensors fixed with respect to the chassis and configured to generate output signals corresponding to an actual pitch velocity of the chassis and an actual pitch angle of the chassis relative to the ground;
a second set of one or more sensors coupled to the positioning unit and configured to generate output signals corresponding to an actual lift position of the blade relative to the chassis;
and
a controller functionally linked to the first set of sensors, the second set of sensors, and the positioning unit, and configured to control the positioning unit to at least raise or lower the blade relative to chassis, as a function of each of the actual pitch velocity of the chassis, the actual pitch angle of the chassis relative to the ground, and the actual lift position of the blade relative to the chassis, corresponding to a desired profile to be generated by the blade with respect to the ground surface.

3 more elements

Dependencies are inferred from the claim text.

Self-propelled work vehicle and control method for blade stabilization accounting for chassis movement

Life of this patent

Self-propelled work vehicle and control method for blade stabilization accounting for chassis movement

Life of this patent

Abstract

Claims20