Journal
2021 10TH INTERNATIONAL IEEE/EMBS CONFERENCE ON NEURAL ENGINEERING (NER)
Volume -, Issue -, Pages 832-835Publisher
IEEE
DOI: 10.1109/NER49283.2021.9441159
Keywords
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This study investigates the use of the DIP/VIP model in studying human-like balance control and its functional rearrangement through parametric changes.
Double-link inverted pendulum (DIP) represents a consistently descriptive model of the kinematics of the human sway in quiet stance. Recently it has been used to simulate human-like sway patterns by an intermittent controller (IC) that actively acts at the ankle and generates motor command based on the sway angle of the DIP center of mass. This virtual internal pendulum (VIP) and its outer redundant structure constitute the DIP/VIP human balance maintenance model. In this work the center of pressure (COP) for a DIP structure is mathematically derived and used with the DIP/VIP model to evaluate whether the latter is able to reproduce human COP characteristics. This was found under the critic time metric (T-cr) of the stabilogram diffusion analysis, and for different IC parameterizations. In particular, IC proportional (P) and derivative (D) terms allowed plausible T-cr similar to 1s [1] only in specific regions of the P-D grid. Thus, the present work suggests the use of the DIP/VIP model in studying human-like balance control and its functional rearrangement through parametric changes.
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