Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2007-10-23
2007-10-23
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C073S001720, C700S282000
Reexamination Certificate
active
10717406
ABSTRACT:
A method, apparatus, and computer program are provided for identifying possible indicators of a defective valve. The method, apparatus, and computer program decompose a signal having a plurality of process variable measurements into a plurality of resolution levels. The process variable measurements are associated with operation of a valve. The method, apparatus, and computer program group the resolution levels into a plurality of groups. The method, apparatus, and computer program identify one or more defect indicators for at least some of the resolution levels using the groups. The one or more defect indicators are associated with a possible defect in the valve.
REFERENCES:
patent: 5262958 (1993-11-01), Chui et al.
patent: 5381697 (1995-01-01), van der Pol
patent: 5594180 (1997-01-01), Carpenter et al.
patent: 5641891 (1997-06-01), Frankl et al.
patent: 5646600 (1997-07-01), Abdel-Malek et al.
patent: 5750879 (1998-05-01), Ohtsuka et al.
patent: 5966674 (1999-10-01), Crawford et al.
patent: 6208943 (2001-03-01), Randolph et al.
patent: 6408676 (2002-06-01), Stratton et al.
patent: 6505517 (2003-01-01), Eryurek et al.
patent: 6539315 (2003-03-01), Adams et al.
patent: 6654697 (2003-11-01), Eryurek et al.
patent: 6725167 (2004-04-01), Grumstrup et al.
patent: 2003/0019297 (2003-01-01), Fiebelkorn et al.
patent: 2003/0216888 (2003-11-01), Ridolfo
patent: 2004/0024568 (2004-02-01), Eryurek et al.
Wanlu et al., Applying MultiResolution Analysis for Processing of Hydraulic Pump Fault Signal, Mar. 18, 2003.
He et al., WPT-SVMs Based Approach for Fault Detection of Valves in Reciprocating Pumps, May 8-10, 2002, Proceedings of the American Control Conference, pp. 4566-4570.
Wang et al., The Fault Character of the Motors Identified Based on Wavelet Transform, Nov. 2-5, 2003, Proceedings of the Second International Conference on Machine Learning and Cybernetics, pp. 2394-2398.
Mallat et al., Singularity Detection and Processing with Wavelet, Mar. 1992, IEEE Transactions on Information Theory, vol. 38, No. 2, pp. 617-643.
Gao et al., Wavelet-Based Pressure Analysis for Hydraulic Pump Health Diagnosis, May 2003, Transactions of the ASAE, vol. 46, No. 4, pp. 969-976.
Braun, S., The Signature Analysis of Sonic Bearing Vibrations, 1980 IEEE.
Gao et al., Support Vector Machines Based Apprroach for Fault Diagnosis of Valves in Reciprocating Pumps, 2002 IEEE Canadian Conference, pp. 1622-1627.
Ren et al., Fault feature Extracting by Wavelet Transform for Control System Fault Detection and Diagnosis, 2000 IEEE, International Conference on Control Applications, pp. 485-489.
Horch A: “A Simple Method for Detection of Stiction In Control Valves” Control Engineering Practice, Pergamon Press, Oxford, GB, vol. 7, 1999, pp. 1'221-1231.
International Search Report for PCT/US2004/038766, issued by the International Searching Authority, mailed Apr. 14, 2005, by the European Patent Office, P.B. 5818 Patentlaan 2, NL -2280 HV Rijswijk.
Lu Joseph Z
Zhan Charles Q.
Le Toan M.
Munck Butrus P.C.
LandOfFree
Apparatus and method for identifying possible defect... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for identifying possible defect..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for identifying possible defect... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3902685