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Estimation of Muscle-tendon Model Parameters Based on a Numeric Optimization  

Nam, Yoon-Su (Division of Mechanical and Mechatronics Engineering, Kangwon National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.26, no.6, 2009 , pp. 122-130 More about this Journal
Abstract
The analysis of human movement requires the knowledge of the Hill type muscle parameters, the muscle-tendon and moment arm length change as a function of joint angles. However, values of a subject's muscle parameters are very difficult to identify. It turns out from a sensitivity analysis that the tendon slack length and maximum muscle force are the two critical parameters among the Hill-type muscle model. Therefore, it could be claimed that the variation of the tendon slack length and maximum muscle force from the Delp's reference data will change the muscle characteristics of a subject remarkably. A numeric optimization method to search these tendon parameters specific to a subject is proposed, and the accuracy of the developed algorithm is evaluated through a numerical simulation.
Keywords
Hill Type Muscle Model; Tendon Slack Length; Optimization; Sensitivity Analysis; Knee Joint Moment;
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Times Cited By KSCI : 1  (Citation Analysis)
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