Identification of a model to simulate the automobile accessibility movement

The presented works are a part of the realization of an automobile accessibility movement simulator. The aim of this paper is to propose an optimization step of the kinematic model representing the human body. This model is made of two rigid bodies representing the trunk (torso and pelvis) and 4 simple open kinematics chains, in a star-shaped topology, with 7 degrees of freedom constituting the arms and the legs. The reconstruction of the joint angles is computed from the spatial trajectories measurement of some particular points of the body. The criterion optimization is the difference between the experimental and reconstructed trajectories of the end effectors. In results, the best body of reference is the torso and the position of the joint between the torso and the pelvis is located at 20% of the trunk length (roughly at the 10th thoracic vertebra)