Jyotindra Narayan , Mohamed Abbas , Subhash Pratap , Rahul Ranjan Bharti , Santosha K. Dwivedy
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引用次数: 0
Abstract
Traditional passive-assist rehabilitation, using a fixed trajectory, often falls short in engaging patients with residual muscle strength, leading to substandard outcomes. This work proposes a novel ‘assist-as-needed’ control strategy for a pediatric lower-limb exoskeleton system. It employs variable admittance control (VAC) based on the neuro-fuzzy inference technique, encouraging realistic subject-exoskeleton interactions and participation. Thereafter, a robust adaptive backstepping sliding mode (ABSM) control with a rapid reaching law (RRL) for gait tracking is introduced. The stability of the proposed position control is established using carefully selected Lyapunov candidate functions. Through numerical simulations, we compare our approach (ABSM-VAC) with an adaptive backstepping-fixed admittance control (AB-FAC), demonstrating improved tracking, compliance, and safety in active-assist gait training. This innovative method can significantly enhance rehabilitation outcomes, particularly for those with partial muscle strength, providing a more engaging and effective therapy experience.
期刊介绍:
All papers from IFAC meetings are published, in partnership with Elsevier, the IFAC Publisher, in theIFAC-PapersOnLine proceedings series hosted at the ScienceDirect web service. This series includes papers previously published in the IFAC website.The main features of the IFAC-PapersOnLine series are: -Online archive including papers from IFAC Symposia, Congresses, Conferences, and most Workshops. -All papers accepted at the meeting are published in PDF format - searchable and citable. -All papers published on the web site can be cited using the IFAC PapersOnLine ISSN and the individual paper DOI (Digital Object Identifier). The site is Open Access in nature - no charge is made to individuals for reading or downloading. Copyright of all papers belongs to IFAC and must be referenced if derivative journal papers are produced from the conference papers. All papers published in IFAC-PapersOnLine have undergone a peer review selection process according to the IFAC rules.