Optimal design of high-precision maglev system using simulation-based DOE and FEM

Lee, H.-W.; Lee, S.G.; Won, Soyoung; Lee, J.

doi:10.1049/ip-epa:20050317

Cited by 14 publications

(6 citation statements)

References 3 publications

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“…Approximately, region 2 is assumed to consist of a material with the same relative permeability as the permanent magnets. For the relative permeability of the high‐quality Nd–Fe–B permanent magnets is 1.03–1.05, which is close to air,

μ_{normalr}

is usually taken as 1 [7, 9, 10, 16].…”

Section: Modelling Methodsmentioning

confidence: 99%

“…An effective model of the magnetic field is indispensable in the optimisation of magnet array to reduce the high-order harmonics and increase the intensity of the magnetic field. The finite-element analysis provides an accurate modelling method of magnet field, but it is time consuming and the quantitative relation between design variables and the magnetic field characteristics, still remains unclear [13][14][15][16]. The harmonic model for flux density distribution has been proved to be valid by some types of magnet arrays as reported [6,9,10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnet array of planar motor using permanent magnets with different magnetisation intensity and height

Wang

Chen

Zheng

et al. 2020

IET Electric Power Applications

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Planar motor is used as an actuator to directly produce multi-degree long stroke, high speed, and high precision movement. Its performance mainly depends on the topology and design of magnet array. In response to the rising trend of structural complexity, this study presents a novel easy-to-manufacture magnet array using permanent magnets with different magnetisation intensity and height. First, the flux density distribution of magnet array with different magnetisation intensity is derived by the Fourier analysis and the scalar magnetic potential equation. Then, the magnetic field model of magnet array using permanent magnets with different magnetisation intensity and height is obtained by the superposition method. Afterwards, the magnet array is raised and optimised based on the derived model. Calculations show that the high-order harmonics are significantly reduced. At last, the proposed analytical modelling method and magnet array are verified with experiments.

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μ_{normalr}

is usually taken as 1 [7, 9, 10, 16].…”

Section: Modelling Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnet array of planar motor using permanent magnets with different magnetisation intensity and height

Wang

Chen

Zheng

et al. 2020

IET Electric Power Applications

View full text Add to dashboard Cite

show abstract

“…The finite element method is often used in the simulation and optimization of structures. [23][24][25] The geometry of the pressure device was optimized by the method of the finite element to reduce the fluctuation of force. 26,27 The static electromagnetic forces were simulated by the software of Maxwell.…”

Section: Methods For Measurement and The Structure Of The Devicementioning

confidence: 99%

Research on an electromagnetic device and pressuring force for measuring the depth of borehole while drilling the bone

Wang

Fang

Jian

et al. 2020

Advanced Composites Letters

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A device for measuring the depth of the borehole base on the magnetic grid during orthopedic surgery is proposed in this article. It consists of a magnetic grid, winding sleeve, two Hall sensors, and control circuitry. The magnetic grid comprises permanent magnets and coil windings. The device fixes on the electric hand drill and works during the surgical operation. An axial pressure keeps the shaft end of the magnetic grid in contact with the surface of the bone or the plate steadily during the electric handheld drilling of the bone. The pressure is an electromagnetic force generated by the interaction between the permanent magnets and the coil windings. The force should be large enough to support the weight of the magnetic grid and a low fluctuation is maintained. The larger the device, the higher the electromagnetic force will be generated. The electromagnetic force is simulated and obtained with the software of Maxwell. The factors that influence the force were the permanent magnet, and the others are the length of permanent magnet and the turns on the coil. The results of orthogonal simulation show that the primary factor is the diameter of the permanent magnet. The optimized parameters include the following: the diameter of the magnet is 7 mm, length of each permanent magnet is 5 mm, and the turns on the coil are 80. Then the pressure force range is approximately 0.485–0.716 N, and the variance of the force is 0.137.

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“…Using the above regression equations and the Box-Behnken design as an optimization algorithm, values of the optimal design variables are obtained [10].…”

Section: A Optimization Strategiesmentioning

confidence: 99%

A Study on Optimal Design of the Triangle Type Permanent Magnet in IPMSM Rotor by Using the Box–Behnken Design

2015

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This paper proposes an optimal rotor design method of an interior permanent magnet synchronous motor (IPMSM) by using a permanent magnet (PM) shape. An IPMSM is a structure in which PMs are buried in an inner rotor. The torque, torque ripple, and safety factor of IPMSM can vary depending on the position of the inserted PMs. To determine the optimal design variables according to the placement of the inserted PMs, parameter analysis was performed. Therefore, a response surface methodology, which is one of the statistical analysis design methods, was used. Among many other response surface methodologies, Box-Behnken design is the most commonly used. For the purpose of this research, Box-Behnken design was used to find the design parameter that can achieve minimum experimental variables of objective function. This paper determines the insert position of the PM to obtain high-torque, low-torque ripple by using a finite-element-method, and this paper obtains an optimal design by using a mechanical stiffness method in which a safety factor is considered.Index Terms-Box-Behnken design, finite-element-method (FEM), optimal design, permanent magnet (PM), safety factor, synchronous motor.

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Optimal design of high-precision maglev system using simulation-based DOE and FEM

Cited by 14 publications

References 3 publications

Magnet array of planar motor using permanent magnets with different magnetisation intensity and height

Magnet array of planar motor using permanent magnets with different magnetisation intensity and height

Research on an electromagnetic device and pressuring force for measuring the depth of borehole while drilling the bone

A Study on Optimal Design of the Triangle Type Permanent Magnet in IPMSM Rotor by Using the Box–Behnken Design

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