Title :
Time-varying identification of human joint dynamics
Author :
MacNeil, J.B. ; Kearney, Robert E. ; Hunter, Ian W.
Author_Institution :
Biomed. Eng. Dept., McGill Univ., Montreal, Que., Canada
Abstract :
A nonparametric time-varying system identification technique has been developed to identify instantaneous impulse response functions of a system undergoing abrupt changes of state using ensemble input and output records. No a priori assumptions are required regarding system structure, form of nonstationarity, or input characteristics. Experimental studies have shown the method to be capable of tracking the time course of changes in human ankle joint dynamics associated with an abrupt change in the level of voluntary activation
Keywords :
biomechanics; identification; a priori assumptions; human joint dynamics; input characteristics; instantaneous impulse response functions; nonparametric time-varying system identification; nonstationarity; voluntary activation level; Biological systems; Biomedical engineering; Convolution; Equations; Humans; Sampling methods; Signal analysis; System identification; Time varying systems; Torque;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95637
