Patent ID: 6016875
Filing Date: 2000-01-25
Classification: A01B,G05B

Abstract:
A system for controlling a position of an implement coupled to a work vehicle, the implement being raised by a hydraulic positioning assembly comprising an actuator and a valve assembly configured to control fluid flow to and from the actuator in response to control signals, the system comprising:a sensor configured to detect the position of the implement and to generate a signal representative thereof;a position command device for setting a desired position of the implement; anda control circuit coupled to the sensor, the position command device, and the valve assembly, the control circuit configured to generate the control signals applied to the valve assembly to actuate the implement to the desired position, using a predetermined gain value and, after detecting undesirable movement of the implement, to modify the gain value to produce a modified gain value and generate subsequent control signals based upon the modified gain value; anda memory which stores the modified gain value, wherein the control circuit applies control signals using the modified said value to the valve assembly to actuate the implement to a subsequent desired position from the position command device.