The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 1993
Filed:
Jun. 21, 1990
David A Gutz, Danvers, MA (US);
Michael S Idelchik, Swampscott, MA (US);
General Electric Company, Cincinnati, OH (US);
Abstract
A method for fault detection in a closed loop feedback control system for an actuator includes modeling the actuator for providing a model output simulating the actuator output in response to a model input which is also the actuator input, and comparing the actuator output and the model output for providing a fault indication upon exceeding a threshold. An apparatus includes a feedback control system having means for providing a feedback signal indicative of an output of the actuator, means for comparing an output demand with the feedback signal for providing an actuator output error, and means for providing to the actuator an input proportional to the error. The apparatus also includes a fault detection system having means for modeling the actuator for providing a model output simulating the actuator output in response to a model input, means for providing the actuator input also to the actuator modeling means as the model input, and means for comparing the actuator output and the model output and providing a fault indication upon exceeding a threshold.