Method for detecting an abnormal lifting cycle and work...

Details Method for detecting an abnormal lifting cycle and work... Method for detecting an abnormal lifting cycle and work...

2008-01-29

2008-01-29

Beaulieu, Yonel (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Construction or agricultural-type vehicle

C037S234000, C172S001000

Reexamination Certificate

active

07324880

ABSTRACT:
An abnormal lifting cycle of a work machine lift component can be indicative of operator error and/or a fault within a lift component coupler. The present disclosure includes a method of detecting a fault for a lift component coupler of a work machine. Pressure within at least one hydraulic cylinder of the coupler is sensed during at least a portion of a lifting cycle of the lift component. A condition of the lifting cycle can be determined by detecting a magnitude of asymmetry within a plurality of the sensed pressures. An abnormal condition of the lifting cycle is indicated if the magnitude of the asymmetry of the plurality of the sensed pressures is outside of a predetermined range of asymmetry.

REFERENCES:
patent: 4466336 (1984-08-01), Broome et al.
patent: 2005/0278089 (2005-12-01), Lueschow

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