Experimental determination of the instant screw axis and angular acceleration axis [biomechanics]

Author

Sommer, H. ; Buczeck, F.L.

Author_Institution

Dept. of Mech. Eng., Pennsylvania State Univ., University Park, PA, USA

fYear

1990

fDate

26-27 Mar 1990

Firstpage

141

Lastpage

142

Abstract

Least-squares algorithms for computing instant screw axis (ISA) and angular acceleration axis (AAA) parameters from position, velocity, and acceleration measurements for discrete landmarks on a rigid body are described. Instantaneous velocity and acceleration for each landmark are approximated using digital filtering and finite difference derivative computations applied to a sequence of experimental position measurements for that landmark. Results from the experimental verification of the algorithms are given

Keywords

acceleration measurement; biological techniques and instruments; biomechanics; least squares approximations; position measurement; velocity measurement; acceleration measurements; angular acceleration axis; digital filtering; discrete landmarks; experimental position measurements; finite difference derivative computations; gait analysis; instant screw axis; least squares algorithms; rigid body; Acceleration; Accelerometers; Angular velocity; Biomechanics; Equations; Fasteners; Instruction sets; Position measurement; Transmission line matrix methods; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 1990., Proceedings of the 1990 Sixteenth Annual Northeast

Conference_Location

State College, PA

Type

conf

DOI

10.1109/NEBC.1990.66324

Filename

66324