Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2008-07-01
2008-07-01
Wachsman, Hal (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C702S079000, C702S117000, C324S603000
Reexamination Certificate
active
11825629
ABSTRACT:
Real time battery impedance spectrum is acquired using one time record, Compensated Synchronous Detection (CSD). This parallel method enables battery diagnostics. The excitation current to a test battery is a sum of equal amplitude sin waves of a few frequencies spread over range of interest. The time profile of this signal has duration that is a few periods of the lowest frequency. The voltage response of the battery, average deleted, is the impedance of the battery in the time domain. Since the excitation frequencies are known, synchronous detection processes the time record and each component, both magnitude and phase, is obtained. For compensation, the components, except the one of interest, are reassembled in the time domain. The resulting signal is subtracted from the original signal and the component of interest is synchronously detected. This process is repeated for each component.
REFERENCES:
patent: 5406496 (1995-04-01), Quinn
patent: 5946482 (1999-08-01), Barford et al.
patent: 6307378 (2001-10-01), Kozlowski
patent: 6653817 (2003-11-01), Tate, Jr. et al.
Smith et al., “Model validation approaches for nonlinear feedback systems using frequency response measurements”, Dec. 7-10, 1999, IEEE Proceedings of the 38th IEEE Conference on Decision and Control, 1999, vol. 2, pp. 1500-1504.
Nikolopoulos et al., “Accurate method of representation of high-voltage measuring systems and its application in high-impulse voltage measurements”, Mar. 1989, IEEE, Science, Measurement and Technology, vol. 136, issue 2, pp. 66-72.
FreedomCAR Battery Test Manual for Power-Assist Hybrid Electric Vehicles, Oct. 2003, Appendix D, DOE/ID-11069, Idaho National Laboratory.
Fenton, Ronald C., Hohn, Justin T., Willson, Peter M., BSM Development Documentation, May 2005, Montana Tech of the University of Montana.
Morrison, William H., Intelligent Self-Evolving Prognostic Fusion, Jul. 29, 2005, NASA, Ames Research Center.
Albresht, Weston, Battery Complex Impedance Identification with Random Signal Techniques, May 4, 2005, Montana Tech of the University of Montana Tech of the University of Montana, 22 pages.
Morrison, John L., CSD Algorithms as MATLAB Code for Real Time Estimation of Battery Impedance, Sep. 2005, Montana Tech of the University of Montana.
Ziemer, Rodger E., Tranter, William H., Signals and Linear Systems, 2002, Chapter 2, pp. 56-123, Principles of Communication, 5th Ed., John Wiley & Sons.
Wasserman, Philip D., Radial Basis-Function Networks, 1993, Chapter 8, pp. 147-176, Van Nostrand Reinhold, New York, (no month).
Alpaydin, Ethem, Radial Basis Functions, 2004, Chapter 12.3, pp. 284-290, The MIT Press, Cambridge, Massachusetts, London, England.
Morrison John L.
Morrison William H.
Kyle Jean
Montana Tech of the University of Montana
Wachsman Hal
LandOfFree
Method of detecting system function by measuring frequency... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of detecting system function by measuring frequency..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting system function by measuring frequency... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3922836