Design and verification of a simple 3D dynamic model of speed skating which mimics observed forces and motions

van der Kruk, E.; Veeger, H.E.J.; van der Helm, F.C.T.; Schwab, A.L.

doi:10.1016/j.jbiomech.2017.09.004

Design and verification of a simple 3D dynamic model of speed skating which mimics observed forces and motions

Title

Design and verification of a simple 3D dynamic model of speed skating which mimics observed forces and motions

Author

van der Kruk, E. (TU Delft Biomechatronics & Human-Machine Control)
Veeger, H.E.J. (TU Delft Biomechanical Engineering; TU Delft Biomechatronics & Human-Machine Control)
van der Helm, F.C.T. (TU Delft Biomechatronics & Human-Machine Control)
Schwab, A.L. (TU Delft Biomechatronics & Human-Machine Control)

Department

Biomechanical Engineering

Date

2017

Abstract

Advice about the optimal coordination pattern for an individual speed skater, could be addressed by simulation and optimization of a biomechanical speed skating model. But before getting to this optimization approach one needs a model that can reasonably match observed behaviour. Therefore, the objective of this study is to present a verified three dimensional inverse skater model with minimal complexity, which models the speed skating motion on the straights. The model simulates the upper body transverse translation of the skater together with the forces exerted by the skates on the ice. The input of the model is the changing distance between the upper body and the skate, referred to as the leg extension (Euclidean distance in 3. D space). Verification shows that the model mimics the observed forces and motions well. The model is most accurate for the position and velocity estimation (respectively 1.2% and 2.9% maximum residuals) and least accurate for the force estimations (underestimation of 4.5-10%). The model can be used to further investigate variables in the skating motion. For this, the input of the model, the leg extension, can be optimized to obtain a maximal forward velocity of the upper body.

Subject

Multibody model
Optimization
Speed skating
Verification

To reference this document use:

http://resolver.tudelft.nl/uuid:f1ce6206-45cc-46ab-8f58-0b2917d92677

DOI

https://doi.org/10.1016/j.jbiomech.2017.09.004

ISSN

0021-9290

Source

Journal of Biomechanics, 64, 93-102

Part of collection

Institutional Repository