所属单位：航空学院
发表刊物：JOURNAL OF THE ROYAL SOCIETY INTERFACE
关键字：human balancing reaction delay acceleration feedback saturation Hopf bifurcation
摘要：A nonlinear model for human balancing subjected to a saturated delayed proportional-derivative-acceleration (PDA) feedback is analysed. Compared to the proportional-derivative (PD) controller, it is confirmed that the PDA controller improves local stability even for large feedback delays. However, it is shown that the saturated PDA controller typically introduces subcritical Hopf bifurcation into the system, which can also lead to falling for large enough perturbations. The subcriticality becomes stronger as the acceleration feedback gain increases or the saturation torque limit decreases. These explain some features of human balancing failure related to the increased reaction delay of inactive elderly people.
ISSN号：1742-5689
是否译文：否
发表时间：2018-01-01
合写作者：Stepan, Gabor,Insperger, Tamas
通讯作者：张丽
发表时间：2018-01-01