System and method for controlling a hydrostatic drive unit of a work vehicle

摘要

A method for controlling a hydrostatic drive unit of a work vehicle is disclosed. The method may generally include determining a reference swashplate position for a hydraulic pump of the hydrostatic drive unit, wherein the reference swashplate position is associated with an uncompensated current command, and monitoring an actual swashplate position of the hydraulic pump, wherein the actual swashplate position differs from the reference swashplate position due to a loading condition of the work vehicle. In addition, the method may include determining a current compensation based at least in part on the actual and reference swashplate positions and generating a compensated current command by adjusting the uncompensated current command based on the current compensation, wherein the compensated current command is associated with a compensated swashplate position for the hydraulic that differs from the reference swashplate position.

主权项

1. A method for controlling a hydrostatic drive unit of a work vehicle, the method comprising:
determining a reference swashplate position for a swashplate of a hydraulic pump of the hydrostatic drive unit, the reference swashplate position being associated with an unadjusted valve current command; monitoring an actual swashplate position of the swashplate, the actual swashplate position differing from the reference swashplate position due to a loading condition of the work vehicle; determining a valve current adjustment based at least in part on the actual and reference swashplate positions; generating an adjusted valve current command by modifying the unadjusted valve current command based on the valve current adjustment, the adjusted valve current command being associated with moving the swashplate to an adjusted swashplate position that is defined between the reference swashplate position and the actual swashplate position; and controlling a valve of the work vehicle based on the adjusted valve current command such that the swashplate is moved to the adjusted swashplate position, wherein, at the adjusted swashplate position, the hydrostatic drive unit drives the work vehicle at a vehicle speed that is less than a vehicle speed associated with the reference swashplate position.