FAULT DETECTION, ISOLATION AND RECONFIGURATION SYSTEMS AND METHODS FOR CONTROLLING ELECTROHYDRAULIC SYSTEMS USED IN CONSTRUCTION EQUIPMENT

Title:

FAULT DETECTION, ISOLATION AND RECONFIGURATION SYSTEMS AND METHODS FOR CONTROLLING ELECTROHYDRAULIC SYSTEMS USED IN CONSTRUCTION EQUIPMENT

Document Type and Number:

WIPO Patent Application WO/2012/118564

Kind Code:

A3

Abstract:

The present disclosure relates to fault detection, isolation and reconfiguration schemes, architectures and methods for use in electrohydraulic actuation systems for construction equipment. In one embodiment, a supervisory controller adapted to interface with a main controller of the construction vehicle is provided. A plurality of control nodes that interface with the supervisory controller are also disclosed, each of which includes pressure and position sensors. The nodes also include a first actuator control node for controlling operation of a first hydraulic actuator, a second actuator control node for controlling operation of a second hydraulic actuator, and a pump control node. The control system has an architecture in which faults are detected and isolated at the supervisory controller level and, where possible, within each of the control nodes at a sensor level, a component level, and a subsystem level.

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Inventors:

YUAN QINGHUI (US)
RANNOW MICHAEL BERNE (US)
GEHLHOFF WADE LEO (US)
SCHOTTLER CHRISTOPHER WILLIAM (US)
MAHULKAR VISHAL (US)

Application Number:

PCT/US2012/000123

Publication Date:

November 29, 2012

Filing Date:

March 05, 2012

Export Citation:

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Assignee:

EATON CORP (US)
YUAN QINGHUI (US)
RANNOW MICHAEL BERNE (US)
GEHLHOFF WADE LEO (US)
SCHOTTLER CHRISTOPHER WILLIAM (US)
MAHULKAR VISHAL (US)

International Classes:

E02F9/22; B66F9/22; B66F11/04; E02F9/26; F15B20/00; G05B23/00

Foreign References:

US5299420A	1994-04-05
US20090158624A1	2009-06-25
JPH08320726A	1996-12-03
US20040085184A1	2004-05-06
US20080312756A1	2008-12-18
GB2419429A	2006-04-26
EP1300595A2	2003-04-09
JP2002089516A	2002-03-27

Attorney, Agent or Firm:

SCHMALTZ, David, G. (P.O. Box 2903Minneapolis, MN, US)

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