Method for controlling a hydraulic servo control in a servo-controlled gearbox

摘要

A control method of a hydraulic servo control (1) of a servo-controlled gearbox; the method comprises:
determining the control fluid pressure within a hydraulic accumulator (19) which feeds hydraulic actuators (5, 6) of the servo control (1); and controlling an electrical pump (20) which feeds the hydraulic accumulator (19) according to the control fluid pressure within the hydraulic accumulator (19) such that the control fluid pressure value is always comprised between a minimum value and a maximum value; the control fluid pressure within the hydraulic accumulator (19) is estimated according to operative parameters of the electrical pump (20) and of the hydraulic actuators (5, 6) without directly measuring the pressure of the control fluid.