Method of detecting system function by measuring frequency response
Abstract
Realtime battery impedance spectrum is acquired using a onetime record. Fast Summation Transformation (FST) is a parallel method of acquiring a realtime battery impedance spectrum using a onetime record that enables battery diagnostics. An excitation current to a battery is a sum of equal amplitude sine waves of frequencies that are octave harmonics spread over a range of interest. A sample frequency is also octave and harmonically related to all frequencies in the sum. The time profile of this signal has a 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 and octave and harmonically related, a simple algorithm, FST, processes the time record by rectifying relative to the sine and cosine of each frequency. Another algorithm yields real and imaginary components for each frequency.
 Inventors:

 Butte, MT
 Manchester, CT
 Idaho Falls, ID
 Issue Date:
 Research Org.:
 Idaho National Lab. (INL), Idaho Falls, ID (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1041020
 Patent Number(s):
 8150643
 Application Number:
 12/217,013
 Assignee:
 Battelle Energy Alliance, LLC (Idaho Falls, ID); Montana Tech of the University of Montana (Butte, MT); Qualtech Systems, Inc. (East Hartford, CT)
 Patent Classifications (CPCs):

G  PHYSICS G01  MEASURING G01R  MEASURING ELECTRIC VARIABLES
 DOE Contract Number:
 AC0705ID14517
 Resource Type:
 Patent
 Country of Publication:
 United States
 Language:
 English
 Subject:
 25 ENERGY STORAGE
Citation Formats
Morrison, John L, Morrison, William H, and Christophersen, Jon P. Method of detecting system function by measuring frequency response. United States: N. p., 2012.
Web.
Morrison, John L, Morrison, William H, & Christophersen, Jon P. Method of detecting system function by measuring frequency response. United States.
Morrison, John L, Morrison, William H, and Christophersen, Jon P. Tue .
"Method of detecting system function by measuring frequency response". United States. https://www.osti.gov/servlets/purl/1041020.
@article{osti_1041020,
title = {Method of detecting system function by measuring frequency response},
author = {Morrison, John L and Morrison, William H and Christophersen, Jon P},
abstractNote = {Realtime battery impedance spectrum is acquired using a onetime record. Fast Summation Transformation (FST) is a parallel method of acquiring a realtime battery impedance spectrum using a onetime record that enables battery diagnostics. An excitation current to a battery is a sum of equal amplitude sine waves of frequencies that are octave harmonics spread over a range of interest. A sample frequency is also octave and harmonically related to all frequencies in the sum. The time profile of this signal has a 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 and octave and harmonically related, a simple algorithm, FST, processes the time record by rectifying relative to the sine and cosine of each frequency. Another algorithm yields real and imaginary components for each frequency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {4}
}
Works referenced in this record:
Real Time Estimation of Battery Impedance
conference, January 2006
 Morrison, J. L.; Morrison, W. H.
 2006 IEEE Aerospace Conference
Electrochemical impedance spectroscopy testing on the Advanced Technology Development Program lithiumion cells
conference, January 2002
 Christophersen, J. P.; Glenn, D. F.; Motloch, C. G.
 2002 IEEE 56th Vehicular Technology Conference, Proceedings IEEE 56th Vehicular Technology Conference
Model validation approaches for nonlinear feedback systems using frequency response measurements
conference, January 1999
 Smith, R.; Banaszuk, A.; Dullerud, G.
 Decision and Control, 1999. Proceedings of the 38th IEEE Conference on
Lumped parameter modeling as a predictive tool for a battery status monitor
conference, January 2003
 Christophersen, J. P.; Motloch, C. G.; Ho, C. D.
 2003 IEEE 58th Vehicular Technology Conference. VTC 2003Fall (IEEE Cat. No.03CH37484)
Accurate method of representation of highvoltage measuring systems and its application in highimpulsevoltage measurements
journal, March 1989
 Nikolopoulos, P. N.; Topalis, F. V.
 IEE Proceedings A (Physical Science, Measurement and Instrumentation, Management and Education), Vol. 136, Issue 2, p. 6672
Comparison of impedance measurements in a DSP using ellipsefit and sevenparameter sinefit algorithms
journal, November 2009
 Ramos, Pedro M.; Janeiro, Fernando M.; Radil, Tomáš
 Measurement, Vol. 42, Issue 9, p. 13701379
Fast summation transformation for battery impedance identification
conference, March 2009
 Morrison, John L.; Smyth, Brian; Wold, Josh
 2009 IEEE Aerospace conference