Design and Testing of a Magnetically Levitated Conveyor

Fabbri, Massimo; Ribani, Pier Luigi; Zuffa, Davide

doi:10.1109/tmag.2012.2207401

Cited by 6 publications

(7 citation statements)

References 16 publications

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“…After mesh generation of the ''maximum length of elements,'' those of permanent magnets, magnetic belt, and region are 3, 10, and 15 mm, respectively. In a condition of diverse conveyor belt velocities, size of band with a sufficient range of motion that covers the magnetic belt 8,17 is established together with the selection of appropriate running time and step length. Mesh generations for permanent magnets, magnetic belt, and band are shown in Figure 3.…”

Section: Model Simulation For Initial Parametersmentioning

confidence: 99%

“…Japan, South Korea and Italy also carried out basic research and prototype design of various types of magnetic suspension transport machinery. [7][8][9] Fang 10 analyzed the research value, working principle, and technical performance of the magnetic cushion belt conveyor; designed the overall structure; and carried out the finite element simulation study on the electromagnetic field. Cheng and Wang 11 and Hu et al 12 separately compared electromagnetic levitation support and permanent magnetic levitation, analyzed air gap characteristics, and put forward a deviation control strategy.…”

Section: Introductionmentioning

confidence: 99%

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Optimization on detent force characteristics of the permanent magnet suspension belt conveyor

Wang

Guo

et al. 2018

Advances in Mechanical Engineering

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Detent force is an important factor affecting the running of permanent magnet suspension belt conveyor. Specific to detent force characteristics of the permanent magnet suspension belt conveyor, a finite element method was adopted to perform finite element analysis on a permanent magnet support system based on diverse air gaps, parameters of permanent magnets, and different kinds of clearances between permanent magnets. Not only was a method of defining the optimal buoyancyresistance ratio for the permanent magnet suspension belt conveyor presented but also an optimized mathematical model for buoyancy-resistance ratio that takes velocity into account was established. Furthermore, a global optimal solution (1:6 m=s) and a local optimal solution (11:83 m=s) were both figured out for optimal speed of the magnetic belt. In this way, references could be provided for the permanent magnet suspension belt conveyor design.

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Section: Model Simulation For Initial Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization on detent force characteristics of the permanent magnet suspension belt conveyor

Wang

Guo

et al. 2018

Advances in Mechanical Engineering

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“…As already proven with a straight conveyor, a misplacements of the PMs or a wrong magnetization can lead to a friction increase with respect to the simply mechanical conveyor (Fabbri et al, 2013). Thus, a check of the PMs after manufacturing was needed.…”

Section: Pms Design Testingmentioning

confidence: 99%

“…where r 1 and r 2 are the vertices of the edge l e . The function O f is the solid angle subtended to face S f as seen from point r. The rqW f /qm vector can be calculated from (7) as in (Fabbri et al, 2013):…”

Section: Magnetic Forces Calculationmentioning

confidence: 99%

“…For a horizontal bend conveyor friction is a main issue, since it causes the erosive wear on the inner sides of the beam and the chain which eventually leads to the failure of the conveyor. The aim of this paper is to design a radial magnetic suspension for a horizontal bend conveyor, by means of PMs positioned either on the chain and the beam, with the intent to reduce the friction between the chain and the beam (Zuffa, 2012;Fabbri et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Design and testing of a magnetic suspension for a 90° horizontal bend conveyor

Fabbri

Ribani

Zuffa³

2015

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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Purpose -A conveyor device is studied with the aim to reduce the friction between the inner surface of the beam and the chain. The lower is the friction between the chain and the beam, the lower is the surface wear. The magnetic repulsion force among permanent magnets (PMs) placed on the beam and on the chain is utilized to reduce friction. The paper aims to discuss these issues. Design/methodology/approach -The considered magnetic suspension is realized with PMs in repulsive configuration; it is designed by solving a constrained optimization problem, with reference to the geometry of the 901 horizontal bend FlexLink WL322 conveyor. Flux density field and its gradient are evaluated using volume integral equation method, allowing to calculate the forces acting on the chain and the stiffness of the magnetic suspension. Findings -The magnetic suspension prototype was manufactured and tested. The experimental and calculated values of the forces acting on the chain compares well. A stable horizontal equilibrium of the chain was obtained during both static and dynamical tests.Research limitations/implications -The quasi-static model used neglects the dynamical interactions among the elements of the chain, the PMs and loads weight during motions and the eddy current losses in the aluminium beam. However the dynamical tests on the prototype show that the chain motion is regular up to the nominal velocity all along the conveyor with the exception of the trailing edge of the 901 curve. Practical implications -The tests on the prototype show the possibility of a removal or at least a reduction of the friction force between the chain and the inner side of the beam by means of a passive magnetic suspension. As a consequence a reduction of noise and vibrations and an increase of the mean-time-to-failure is expected. Originality/value -Prototype testing shows that the unavoidable vertical instability of the magnetic forces has no practical consequence since, reducing the allowed vertical gap, the chain is stabilized by the gravitational force.

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Research on Magnetic Model of Low Resistance Permanent Magnet Pipe Belt Conveyor

Wang

Guo

2016

3D Res

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Design and Testing of a Magnetically Levitated Conveyor

Cited by 6 publications

References 16 publications

Optimization on detent force characteristics of the permanent magnet suspension belt conveyor

Optimization on detent force characteristics of the permanent magnet suspension belt conveyor

Design and testing of a magnetic suspension for a 90° horizontal bend conveyor

Research on Magnetic Model of Low Resistance Permanent Magnet Pipe Belt Conveyor

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