IDEAS home Printed from https://ideas.repec.org/a/taf/gcmbxx/v15y2012i9p1001-1009.html
   My bibliography  Save this article

Estimation of trunk mechanical properties using system identification: effects of experimental setup and modelling assumptions

Author

Listed:
  • Babak Bazrgari
  • Maury Nussbaum
  • Michael Madigan

Abstract

The use of system identification to quantify trunk mechanical properties is growing in biomechanics research. The effects of several experimental and modelling factors involved in the system identification of trunk mechanical properties were investigated. Trunk kinematics and kinetics were measured in six individuals when exposed to sudden trunk perturbations. Effects of motion sensor positioning and properties of elements between the perturbing device and the trunk were investigated by adopting different models for system identification. Results showed that by measuring trunk kinematics at a location other than the trunk surface, the deformation of soft tissues is erroneously included into trunk kinematics and results in the trunk being predicted as a more damped structure. Results also showed that including elements between the trunk and the perturbing device in the system identification model did not substantially alter model predictions. Other important parameters that were found to substantially affect predictions were the cut-off frequency used when low-pass filtering raw data and the data window length used to estimate trunk properties.

Suggested Citation

  • Babak Bazrgari & Maury Nussbaum & Michael Madigan, 2012. "Estimation of trunk mechanical properties using system identification: effects of experimental setup and modelling assumptions," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 15(9), pages 1001-1009.
    • Handle: RePEc:taf:gcmbxx:v:15:y:2012:i:9:p:1001-1009
    DOI: 10.1080/10255842.2011.570340
    as

    Download full text from publisher

    File URL: http://hdl.handle.net/10.1080/10255842.2011.570340
    Download Restriction: Access to full text is restricted to subscribers.
    File URL: https://libkey.io/10.1080/10255842.2011.570340?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:taf:gcmbxx:v:15:y:2012:i:9:p:1001-1009. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Chris Longhurst (email available below). General contact details of provider: http://www.tandfonline.com/gcmb .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.