Design, modelling and characterisation of a magnetic variable stiffness mechanism

Abstract

E Prototype Torque Profile Comparisons 439References 439LIST OF FIGURES 3.32 Ring of Magnets geometry for number of ring magnets n = 4.The solid curves represents the rotor and ring magnets, while the dashed curves represents the space needed for each magnet to maintain the desired gap δ between all magnets, with radii δ 2 larger than their solid counterparts. r rtr is the radius of the rotor magnet, and r rng is the radius of the ring magnets. . . . 3.33Top view of the geometry of the ring of magnets simulation setup, with ring magnets labelled for the Diametrical or Halbach magnetisation configurations. The direction of magnetisation of the materials for the "Halves" configuration are defined in Table 3.8. Magnetisation directions are illustrated for ψ = 25 • , φ = 80 • . The magnets belonging to the virtual "north pole" and "south pole" are drawn in red and blue respectively.3.34 Top view of the geometry of the ring of magnets simulation setup, with ring magnets labelled for the Radial magnetisation configuration. The direction of magnetisation of the materials for the "Halves" configuration are defined in Table 3.8. Magnetisation directions are illustrated for ψ = 25 • , φ = 80 • .LIST OF FIGURES 3.48 Torque profiles generated by the Halves Halbach-Radial magnetisation setup for ψ = 0 rad for the ring of magnets simulation model.