Data underlying the Master thesis: Using Amplitude-modulated Pseudo Forces to Control Human Movement

Humans perceive a pulling or pushing sensation when subjected to an asymmetric vibration. This so-called pseudo force has great potential to guide human movement. Previous research has exclusively focused on the effect of pseudo forces in open-loop environments, in which the user’s joint angular velocity cannot be corrected. As the latter is essential for providing movement guidance, this paper proposes the first closed-loop system in the field of pseudo forces, using amplitude-modulated pseudo forces as haptic feedback. With this feedback, the user was assisted in moving towards a specific target angular velocity. In a human factors experiment, the amplitude-modulated stimuli were compared to constant-amplitude stimuli. The results showed that amplitude-modulated pseudo forces significantly decreased the error between the user’s and the target angular velocity when continuous movement in the desired direction was achieved. Therefore, the study demonstrated that amplitude-modulated pseudo forces can effectively guide human movement, representing an essential step towards developing a wearable movement guidance device.<br>For full paper, visit http://resolver.tudelft.nl/uuid:be1be224-2535-40c0-8e17-ed21b7187a79当人体受到非对称振动作用时，会感知到牵拉或推挤的体感。这种被称为伪力（pseudo force）的现象，在人体运动引导领域具备巨大应用潜力。过往相关研究仅聚焦于伪力在开环环境中的作用效果，此类场景下无法对使用者的关节角速度进行校正。而关节角速度校正正是实现运动引导的核心前提，为此本文提出了伪力领域首个闭环系统，采用调幅伪力作为触觉反馈。借助该反馈机制，系统可辅助使用者趋近指定目标角速度。在一项人因工程实验中，研究团队将调幅刺激与恒幅刺激进行了对照测试。实验结果表明，当使用者沿预期方向持续运动时，调幅伪力可显著缩小使用者实际角速度与目标角速度之间的误差。综上，本研究证实调幅伪力能够有效引导人体运动，为可穿戴运动引导设备的研发迈出了关键一步。 如需获取完整论文，请访问：http://resolver.tudelft.nl/uuid:be1be224-2535-40c0-8e17-ed21b7187a79