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Estimating Ground Inclination Using Strain Sensors with Fourier Series Representation
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent systems (IS-lab).
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent systems (IS-lab).
2010 (English)In: Journal of Robotics, ISSN 1687-9600, Vol. 2010, p. 1-8Article in journal (Refereed) Published
Abstract [en]

An embedded measurement system for foot orthosis during gait is proposed. Strain gauge sensors were mounted on a foot orthosis to give information about strain in the sagittal plane. The ankle angle of the orthosis was fixed and strain characteristics were therefore changed when walking on slopes. With a Fourier series representation of the strain during a gait cycle, ground angle at different walking speeds and inclinations could be estimated with similar accuracy as previous studies using kinematically based estimators. Furthermore, if the angle of the mechanical foot ankle was changed, the sensing technique still could estimate ground angle without need for recalibration as opposed to kinematical sensors. This indicates that embedded strain sensors can be used for online control of future orthoses with inclination adaptation. Also, there would be no need to recalibrate the sensing system when changing shoes with different heel heights.

Place, publisher, year, edition, pages
New York: Hindawi Publishing Corporation, 2010. Vol. 2010, p. 1-8
Keywords [en]
Estimation, Strain sensors, Fourier series, Ground inclination, Orthorsis
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:hh:diva-4295DOI: 10.1155/2010/465618OAI: oai:DiVA.org:hh-4295DiVA, id: diva2:310945
Note

Article ID: 465618

Available from: 2010-04-20 Created: 2010-04-19 Last updated: 2018-03-23Bibliographically approved

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Svensson, WolfgangHolmberg, Ulf

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CiteExportLink to record
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Citation style
  • apa
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