Two-dimensional automatic control modeling of a posture control system

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A posture control model has been developed on the basis of the 2-dimensional feedback control theory. Human postural characteristics were investigated in 5 healthy participants. Tests were performed with eyes open and eyes closed. After 5 s of quiet standing, each participant was unexpectedly pulled forward by 30 mm at his pelvis height and then released. Postural sway was measured over 20 s at a rate of 100 per second. Transfer functions to represent the posture control characteristic were identified by the least squares’ method. These showed good results of the model’s fitness, predictability, and stability. The response of the eyes-closed condition to perturbation is more oscillatory than that of the eyes-open condition. It seems that the model identified could be applicable to ergonomics, sports, or clinical situations. © 1998 Taylor & Francis Group, LLC.
Publisher
TAYLOR & FRANCIS LTD
Issue Date
1998-01
Language
English
Citation

INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS, v.4, no.4, pp.485 - 498

ISSN
1080-3548
DOI
10.1080/10803548.1998.11076406
URI
http://hdl.handle.net/10203/70391
Appears in Collection
IE-Journal Papers(저널논문)
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