MATHEMATICAL BACKGROUND OF DEVELOPMENT OF STEERING MECHANISM FOR HUMAN POWERED VEHICLE

摘要

Development of a steering mechanism in a human powered vehicle (HPV) with two steering wheels tackles two major issues: the lack of space to accommodate steering rods between front wheels, and conditions that occur while the vehicle is driving along a curve. The second are analytically described by the function of the wheel turn depending on an optional radius of the curve. An equation was derived describing the difference of the inner and outer turn radius depending on the distance between the wheels on steering axis. The constructional solution is based upon two rope-wheels with variable radii and Bowden cables. Unlike the Ackerman's mechanism, presented solution enables the optimal travel of both wheels through a curve.