Print Email Facebook Twitter Modelling and measuring 3D movements of a speed skater Title Modelling and measuring 3D movements of a speed skater Author Van der Kruk, E. Contributor Veeger, H.E.J. (mentor) Schwab, A.L. (mentor) Faculty Mechanical, Maritime and Materials Engineering Department BioMechanical Engineering Programme BMD Date 2013-10-27 Abstract Ice-skating is a rather special form of locomotion: the skater pushes sideward to propel himself forward; Insight in the details of this technique can help a speed skater improve his performance. The aim of this thesis is to develop a reliable and valid three-dimensional biomechanical model that simulates the motion of a speed skater, to gain insight in the skating technique. In order to prove the reliability of the model, the model needs to be verified. Thus, the second goal of this thesis is to accurately measure the 3D kinematics of a speed skater, concerning the 2D positions of the skates and the 3D position of the upper body. An iGPS system (an optoelectronic based indoor GPS system) proved to be most accurate for the static and dynamic position measurements of skates and upper body, with an accuracy of 6mm (maximum absolute error). The iGPS data did suffer from data gaps, which resulted in coverage of about 67% in time. Concerning roll angle measurements of the skate, the Xsens (MTx) measurement system showed to be most accurate, with an accuracy of 50 (mean error); The speed skater was modelled by three point masses, an upper body and two feet, and skate constraints at the feet, based on prior studies. The input of the model were the changing distance between the mass modelled at the upper body and the mass modelled at the skate and the output were the global motion of the skater on the ice and the forces exerted. However exploratory the current study seems to indicate that it is possible to accurately model a speed skater using only one mass at the upper body and two infinitesimal point-masses at the skates. Subject speed skatingkinematic measuringrecordingLPMiGPSGPSXsensProMovedynamic modelbiomechanical model To reference this document use: http://resolver.tudelft.nl/uuid:2a54e547-0a5a-468b-be80-a41a656cacc1 Embargo date 2018-10-27 Part of collection Student theses Document type master thesis Rights (c) 2013 Van der Kruk, E. Files PDF Thesis_Eline_van_der_Kruk.pdf 23.33 MB Close viewer /islandora/object/uuid:2a54e547-0a5a-468b-be80-a41a656cacc1/datastream/OBJ/view