Bicycle Crank Assistive Propulsion Technology: Mechanical Design, Instrumentation and Control
摘要
This study addresses the pressing need for accessible cycling solutions for individuals with lower limb disabilities. With approximately 15% of the global population experiencing some form of disability, it is imperative to develop innovative technologies to enhance their mobility and quality of life. This research aims to design and manufacture a mechanical support structure, power transmission and control system for an electric motor, in order to enable additional propulsion assistance as required by specific user scenarios. Employing CAD, CAE, and Additive Manufacturing Prototyping techniques, a chain drive system integrated with the bicycle’s spider crank via a freewheel mechanism, has been developed. The motor is securely affixed to the bicycle’s downtube via a joint assembly comprising braces and bolts, ensuring stability and efficiency. The prototype was tested by a subject with cerebral palsy, and he was able to turn a complete revolution of the crank.