HAL Exoskeleton – Hybrid Assistive Limb Robotic Suit for Gait Rehabilitation

This video presents a technical overview of the HAL exoskeleton (Hybrid Assistive Limb), a wearable robotic suit designed to assist lower-limb movement during walking and functional tasks. The device is examined from a biomechanics and engineering perspective, including the leg frames, powered hip and knee joints, waist module, sensor set, and control unit. The presentation explains how HAL uses bioelectric signals from the user’s muscles together with motion sensors to estimate movement intent and generate assistive torque at the joints, supporting gait while preserving voluntary control. Key topics include donning and adjustment procedures, fit across different body sizes, operating modes based on voluntary control and robotic support, and parameter selection for gait speed, assistance level, and joint range. Typical use scenarios in rehabilitation for neurological and musculoskeletal conditions are outlined at a conceptual level, along with safety features, harness configuration, and considerations for monitoring posture and fatigue. The content is intended for students, clinicians, and biomedical engineers interested in rehabilitation exoskeletons, human–robot interaction, and lower-limb biomechanics, and is provided solely for educational and informational purposes without clinical or usage recommendations.