Multi-body ski jumper model with nonlinear dynamic inversion muscle control for trajectory optimization

(Mehrkörper-Skisprungmodell mit nichtlinearer dynamischer Inversionsmuskelsteuerung zur Flugbahnoptimierung)

This paper presents an approach to model a ski jumper as a multi-body system for an optimal control application. The modeling is based on the constrained Newton-Euler-Equations. Within this paper the complete multi-body modeling methodology as well as the musculoskeletal modeling is considered. For the musculoskeletal modeling and its incorporation in the optimization model, we choose a nonlinear dynamic inversion control approach. This approach uses the muscle models as nonlinear reference models and links them to the ski jumper movement by a control law. This strategy yields a linearized input-output behavior, which makes the optimal control problem easier to solve. The resulting model of the ski jumper can then be used for trajectory optimization whose results are compared to literature jumps. Ultimately, this enables the jumper to get a very detailed feedback of the flight. To achieve the maximal jump length, exact positioning of his body with respect to the air can be displayed
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Schlagworte: Skispringen Bewegung Bewegungskoordination Optimierung Biomechanik Analyse Untersuchungsmethode Methode Modellierung Leistung
Notationen: Kraft-Schnellkraft-Sportarten Naturwissenschaften und Technik
DOI: 10.3390/proceedings2060321
Veröffentlicht in: Proceedings
Veröffentlicht: 2018
Jahrgang: 2
Heft: 6
Seiten: 321
Dokumentenarten: Artikel
Sprache: Englisch
Level: hoch