System for controlling the position of an implement attached to

Details System for controlling the position of an implement attached to System for controlling the position of an implement attached to

1996-07-25

1998-09-22

Melius, Terry Lee

Earth working

Automatic power control

701 50, A01B 4106

Patent

active

058100954

ABSTRACT:
A system or method for controlling the position of an implement coupled to a work vehicle. The implement is moveable by a hydraulic positioning assembly including an actuator and a valve assembly which control the flow of fluid to the actuator in response to control signals. The valve assembly includes raise and lower valves, each valve requiring a control signal equal to a threshold value before the valve opens and fluid begins to flow. The system includes a sensor to detect the position of the implement and a control circuit. In response to a change in a position command, the control circuit applies a control signal to the appropriate raise or lower valve based upon the respective threshold value. The control signal may include a component for moving the implement at a desired rate of movement. After undesirable implement movement is detected, the control circuit modifies the threshold value. The modification may occur when the control circuit detects that the implement is moving at an excessive rate due to the effects of valve hysteresis and implement weight. The control circuit may detect the undesirable movement by determining that the position error value is more negative than a predetermined value.

REFERENCES:
patent: 4176337 (1979-11-01), Aechter et al.
patent: 4414630 (1983-11-01), Harris et al.
patent: 4521856 (1985-06-01), Phelps et al.
patent: 5261495 (1993-11-01), Szymczak
patent: 5320186 (1994-06-01), Strosser at al.
patent: 5339906 (1994-08-01), Fox et al.
patent: 5421416 (1995-06-01), Orbach et al.
patent: 5469921 (1995-11-01), Orbach et al.
patent: 5472056 (1995-12-01), Orbach
patent: 5538084 (1996-07-01), Nakayama et al.
patent: 5549166 (1996-08-01), Orbach et al.

Affiliated with

Also associated with

Rating

System for controlling the position of an implement attached to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for controlling the position of an implement attached to , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for controlling the position of an implement attached to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1614754