Design of a variable stiffness flexure mechanism for micromanipulation tasks

Zhao, Su; Iwasa, Toshihiro; Yi, Lim Zhen; Yap, Shee Cheng; Chen, Silu; Tech, Ang Wei

doi:10.1109/aim.2014.6878202

Cited by 1 publication

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“…Selective locking of flat plates, wire bundles or granules (illustrated in Figure 2.8) also allows resistance to bending to be modified, typically achieved through the application of pressure by the creation of a vacuum or electrostatic attraction [121,122,6,123,124], though precise control of stiffness is difficult due to friction and hysteresis, with the actual stiffness achieved dependant on the state of bending at the moment the vacuum is applied [4]. The application of favourable stresses on leaf springs in flexural mechanism using piezoelectric actuators to induce stress stiffening or softening has also been studied, leading to a design capable of changing stiffness rapidly while being largely immune from assembly error and wear [125,126,127].…”

Section: Physical Properties Of the Springmentioning

confidence: 99%

Design, modelling and characterisation of a magnetic variable stiffness mechanism

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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.

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Section: Physical Properties Of the Springmentioning

confidence: 99%

Design, modelling and characterisation of a magnetic variable stiffness mechanism

Lim¹

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Design of a variable stiffness flexure mechanism for micromanipulation tasks

Cited by 1 publication

References 21 publications

Design, modelling and characterisation of a magnetic variable stiffness mechanism

Design, modelling and characterisation of a magnetic variable stiffness mechanism

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