TRACK TRENCHER PROPULSION SYSTEM WITH COMPONENT FEEDBACK

摘要

A system and process for controlling propulsion and steering of a track trencher excavation machine (30) powered by an engine (36) includes a multiple mode propulsion and steering control system that performs a plurality of functions depending on a selection of one of a plurality of operational modes. A controller (182) generates a vehicle propulsion hydrostatic drive signal (318, 319) optionally using a track drive hydraulic pressure (320, 321) or a track drive speed (314, 315) as a variable for modifying the propulsion drive signal. The controller optionally uses a hydraulic attachment drive pressure (323) as a variable for further modifying the propulsion drive signal.