Method and apparatus for controlling an implement of a work mach

Details Method and apparatus for controlling an implement of a work mach Method and apparatus for controlling an implement of a work mach

1997-05-22

1999-05-04

Will, Thomas B.

Excavating

Ditcher

Condition responsive

91361, F16K 31124, F15B 1316

Patent

active

058990089

ABSTRACT:
An apparatus for controllably moving a work implement. The implement is connected to a work machine and is moveable in response to the operation of a hydraulic cylinder. The apparatus includes an operator controlled joystick that generates an operator command signal, which is indicative of a desired velocity of the work implement movement. Cylinder position sensors produce cylinder position signals in response to the position of lift and tilt cylinders. A valve assembly receives an electrical valve signal, and controllably provides hydraulic fluid flow to the respective hydraulic cylinders to move the cylinders in accordance with the operator command signal. A controller receives the operator command and cylinder position signals, and responsively produces a pump command signal to change the displacement of a variable displacement pump to regulate the movement of the hydraulic cylinders.

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patent: 5666806 (1997-09-01), Dietz
patent: 5737993 (1998-04-01), Cobo et al.
patent: 5757158 (1998-05-01), Ferguson et al.

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