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Development and verification of a model predicting force transmission in a lower back exoskeleton, suggesting improvements for real-world use.
This work describes the development and verification of an analytical modeling tool for a passive lower back exoskeleton with adjustable force transmission capabilities. The analytical model allows for rapid evaluations of support force transmission capabilities based on various geometric design parameters. It aims to analyze the behavior of different design parameter combinations to ensure effective and safe support for future validation procedures with end users. The verification process combines two traditional methods, utilizing both experimental and analytical comparisons through an In-Vitro/In-Silico approach. The analytical model closely predicts the progression profiles of the support force within a specified range of motion, allowing for the estimation of tunable force-deflection properties of the passive energy storage mechanism across different elastic band configurations. Future developments will focus on improving the exoskeleton's design and on using the verified model to investigate the biomechanical effectiveness of the adjustable range of support forces it can provide in real-world applications.
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Fernández-Montoya et al. (2026) studied this question.
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