Patent ID: 8897981
Filing Date: 2014-11-25
Classification: F16D,Y10T

Abstract:
1. Method for determining an adjustment parameter in a hydraulic actuator arrangement for a motor vehicle drivetrain, wherein the actuator arrangement has a pump and a hydraulic cylinder, wherein a pressure port of the pump is connected to a port of the hydraulic cylinder, wherein the adjustment parameter is a function of the volume of the fluid that must be delivered by the pump in order to realize a predetermined operating point of the actuator arrangement, wherein the operating point is defined by a value pair of an operating point rotational speed value of the pump and an operating point control value of the pump, having the steps: regulating the pump to the operating point rotational speed value such that the pump delivers a fluid volume flow rate corresponding to the operating point rotational speed value; and integrating the fluid volume flow rate over the time until a termination operating state of the actuator arrangement, in which a control value of the pump is less than or equal to the operating point control value, wherein the adjustment parameter includes the fluid volume measured by means of the integration step; and comparing the fluid volume determined by the integration step with a volume setpoint value, and adjusting the operating point rotational speed value of the pump for the next actuating process of the actuator arrangement.