Sensitivity analysis of dynamics system in the upper limb movement control

Document Type

Conference Proceeding

Publication Date

1-1-2012

Abstract

The dependence of muscle force on muscle length gives rise to a "spring - like" behavior which has been shown to play an important role during human movement. Neville Hogan (Hogan, 1985) proposed a mathematical model in terms of impedance control of arm movement. Discussing this work, Dr. Hogan admits that it can not effectively model all aspects of the performance of the system. He said "Controlling the complete dynamic behavior of the limb may be beyond the capacity of the central nervous system. If the disturbance is sufficiently abrupt, then, because of the inevitable transmission delays, continuous intervention based on neural feedback information will not be a feasible method of modulating these quantities.". However, the model proposed in this study, accomplished most the work which Hogan believed was not feasible. In order to validate the result of proposed model, this study perform sensitivity analysis between the results produced by the dynamics system and the results measured, the comparison showed the difference between these two results were less than 10%, which strongly support the idea that proposed dynamic model can accurately reflect dynamics system in the upper limb movement control. Copyright © 2012 by ASME.

Identifier

84887297535 (Scopus)

ISBN

[9780791845189]

Publication Title

ASME International Mechanical Engineering Congress and Exposition Proceedings Imece

External Full Text Location

https://doi.org/10.1115/IMECE2012-86094

First Page

429

Last Page

434

Volume

2

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