CIRCUIT PRESSURE CONTROL SYSTEM FOR HYDROSTATIC POWER TRANSMISSION

摘要

In the hydrostatic power transmission control system, the movement of a manual control lever is sensed and signals to a control unit which also receives the signal representively, of an hydraulic pump. In addition the control unit receives a signal representing the sensed tilt of a swash-plate mechanism of the pump. In the unit, a swash- plate tilt calculator derives, on the basis of the lever movement and pressure signal, a signal representing an optimum swash plate tilt command and inputs it into a swash-plate tilt control circuit.