Three-Rigid-Body-Particle Modeling and Optimization of Trajectory and Posture for Alpine Skiing  

作　　者：ZHANG Yijia FEI Qing YAO Xiaolan SUN Jian ZHANG Yanjun CHEN Zhen 

机构地区：[1]School of Automation,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Journal of Systems Science & Complexity》2024年第2期581-608,共28页系统科学与复杂性学报（英文版）

基　　金：supported in part by the Key Technology Research and Demonstration of National Scientific Training Base Construction of China under Grant No.2018YFF0300800;in part by the National Natural Science Foundation of China under Grant No.62173323;in part by Beijing Institute of Technology Research Fund Program for Young Scholars.

摘　　要：This paper presents a new study on modeling and optimization of trajectory and posture for the super-giant(SG)slalom of alpine skiing.It is the first time that a Three-Rigid-Body-Particle model based on rigorous derivations and stability analysis is established to represent skiers trajectory and posture characteristics,as it is more accurate than the single-rigid-body model which is commonly used in existing studies.In addition,the Radau pseudospectral method is applied to solve the trajectory and posture optimization problem in order to obtain better skiing trajectory,skiing posture,and some key kinematic parameters of skiers.Moreover,this paper analyzes the effects of different body types,minimum turning radii,and flexor and extensor strength of knees and hip joint on skiing performance.Finally,based on the findings of the study,some advice about how to improve the performance of the SG slalom in view of science and technology is given to skiers and coaches for reference.

关 键 词：Alpine skiing modeling posture optimization Three-Rigid-Body-Particle model trajectory optimization 

分 类 号：G863.11[文化科学—体育训练]