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New Uses for Sensitivity Analysis: How Different Movement Tasks Effect Limb Model Parameter SensitivityOriginal results for a newly developed eight-order nonlinear limb antagonistic muscle model of elbow flexion and extension are presented. A wider variety of sensitivity analysis techniques are used and a systematic protocol is established that shows how the different methods can be used efficiently to complement one another for maximum insight into model sensitivity. It is explicitly shown how the sensitivity of output behaviors to model parameters is a function of the controller input sequence, i.e., of the movement task. When the task is changed (for instance, from an input sequence that results in the usual fast movement task to a slower movement that may also involve external loading, etc.) the set of parameters with high sensitivity will in general also change. Such task-specific use of sensitivity analysis techniques identifies the set of parameters most important for a given task, and even suggests task-specific model reduction possibilities.
Document ID
19850006220
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Winters, J. M.
(California Univ. Berkeley, CA, United States)
Stark, L.
(California Univ. Berkeley, CA, United States)
Date Acquired
August 12, 2013
Publication Date
September 1, 1984
Publication Information
Publication: NASA. Ames Research Center 20th Ann. Conf. on Manual Control, Vol. 1
Subject Category
Man/System Technology And Life Support
Accession Number
85N14529
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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