Degraded actuator detection

Details Degraded actuator detection Degraded actuator detection

2011-06-28

2011-06-28

Khuu, Cindy Hien-Dieu (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Performance or efficiency evaluation

Reexamination Certificate

active

07970583

ABSTRACT:
An actuator control system is disclosed that includes an actuator continuously movable between multiple positions. The controller is configured to command the actuator to a desired actuator position and to apply the command to an actuator model. The controller is configured to compare the modeled and actual actuator positions to determine if the position difference exceeds a fault detection accommodation limit and if the position difference is within a band that is different than the fault detection accommodation limit. The controller is configured to calculate a threshold, which is based upon an estimated load on the actuator. The controller is configured to calculate a band comprised of the threshold applied to the modeled position and to determine if the actual actuator position is within the calculated band. The threshold is calculated at regular intervals, and a fault is declared if the actual actuator position is outside the band for a number of consecutive intervals.

REFERENCES:
patent: 4120469 (1978-10-01), Westermeier
patent: 4355358 (1982-10-01), Clelford et al.
patent: 4423594 (1984-01-01), Ellis
patent: 5116362 (1992-05-01), Arline et al.
patent: 5233512 (1993-08-01), Gutz et al.
patent: 5486997 (1996-01-01), Reismiller et al.
patent: 5748469 (1998-05-01), Pyotsia
patent: 5908176 (1999-06-01), Gilyard
patent: 5949677 (1999-09-01), Ho
patent: 6341238 (2002-01-01), Modeen et al.
patent: 6347289 (2002-02-01), VanderLeest
patent: 6868325 (2005-03-01), Menon et al.
patent: 7092848 (2006-08-01), Hoff et al.
patent: 7260501 (2007-08-01), Pattipatti et al.
patent: 7280941 (2007-10-01), Bonanni et al.
patent: 7451021 (2008-11-01), Wilson
patent: 7827001 (2010-11-01), Schneider et al.
patent: 2009/0045296 (2009-02-01), Cerchie et al.

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