Analysis of magnetic force production in slider actuators combining analytical and finite element methods

Nogueira, Antônio Flavio Licarião

doi:10.1590/s2179-10742011000100022

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…The electromagnetic propulsion force is obtained from a 2D-FEM solver [25]. It uses the weighted Maxwell stress tensor technique [26], which is one of the most reliable approaches for force and torque computations [27]. It consists of computing the Maxwell stress tensor over a set of concentric surfaces of thickness δ and contour Γ(δ) wrapping the mover (see Equation 8), with n y being a normal unit vector in the y-direction; and B x and B y are the magnetic field density in the x and y directions, respectively.…”

Section: Finite Element Analysis Resultsmentioning

confidence: 99%

Linear Hybrid Reluctance Motor with High Density Force

García-Amorós

2018

Energies

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Linear switched reluctance motors are a focus of study for many applications because of their simple and sturdy electromagnetic structure, despite their lower thrust force density when compared with linear permanent magnet synchronous motors. This study presents a novel linear switched reluctance structure enhanced by the use of permanent magnets. The proposed structure preserves the main advantages of the reluctance machines, that is, mechanical and thermal robustness, fault tolerant, and easy assembly in spite of the permanent magnets. The linear hybrid reluctance motor is analyzed by finite element analysis and the results are validated by experimental results. The main findings show a significant increase in the thrust force when compared with the former reluctance structure, with a low detent force.

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Section: Finite Element Analysis Resultsmentioning

confidence: 99%

Linear Hybrid Reluctance Motor with High Density Force

García-Amorós

2018

Energies

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“…A C-core actuator has been chosen by Kim, Lowther and Sykulski [23] to evaluate the accuracy of force computation algorithms to determine global forces, as well as force distribution over the surfaces of magnetized bodies in contact. Different types of C-core actuators have also been used to demonstrate applications of the single-solution virtual work method [24].…”

Section: The Test Problemmentioning

confidence: 99%

Simulated Experiments for Teaching CAD Techniques Using Analytic and Finite Element Solutions of Electromagnetic Two-Dimensional Problems with Longitudinal Symmetry

Nogueira¹,

Weinert²,

Maldonado³

2019

JEMAA

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The paper describes an approach to teaching low-frequency electromagnetic CAD techniques to undergraduate students pursuing a degree course in electrical engineering. The simulated experiments make use of a two-dimensional open-access software based on the finite-element method. At the laboratory meetings, the problems are initially solved analytically. Upon this, students learn how to create the numeric model and how to define the sequence of field problems that lead to the required solution. Simulation tasks based on a force-producing electromagnet are used to introduce numeric techniques to determine magnetic field distribution, evaluation of energy storage and generation of magnetic forces. The nature of the magnetic force generated in the air gaps of the C-core electromagnet is explained in detail. Magnetic forces are calculated by the classical and weighted versions of the method of Maxwell stress tensor. The paper provides all the basic elements required for further exploration of devices with longitudinal symmetry. Journal of Electromagnetic Analysis and Applications involving non-homogeneous, non-linear and time-dependent problems has been determinant in the choice of this numerical method. The manuscript takes the reader to a step-by-step simulation journey that provides all the basic elements required for the analysis of electromagnetic devices with longitudinal symmetry.A. F. L. Nogueira et al.

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“…The electromagnetic attraction force will be produced between the moving-iron and static-iron because the magnetic field of the moving-iron and static-iron has opposite polarities. 20 The electromagnetic attraction force (F) can be described as…”

Section: Operating Principle Of Fbg DC Sensor Based On Electromagnetic Forcementioning

confidence: 99%

A fiber Bragg grating direct current sensor with temperature compensation based on electromagnetic force

Yao

Zhou

Zhang

et al. 2015

Advances in Mechanical Engineering

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A novel fiber Bragg grating direct current sensor with intrinsic temperature compensation is presented in this article. The operating principle of the sensor is based on the deflection of a cantilever beam due to the electromagnetic force between a static-iron and a moving-iron attached to the free end of the cantilever which is enclosed within a solenoid through which the current under test is passed. The deflection of the cantilever beam is measured by differential strain sensing using two fiber Bragg gratings mounted on either side of the beam, thus achieving temperature compensation. The sensor operation is theoretically described, and experimental measurements confirm the operation of the fiber Bragg grating direct current sensor up to 500 A. A 382-pm Bragg wavelength shift difference is detected when the current is 500 A. The test results are analyzed and discussed in the time domain and frequency domain. The resistance to electromagnetic interference immunity of the fiber Bragg grating sensor is improved compared with the strain gauge sensor.

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Analysis of magnetic force production in slider actuators combining analytical and finite element methods

Cited by 6 publications

References 9 publications

Linear Hybrid Reluctance Motor with High Density Force

Linear Hybrid Reluctance Motor with High Density Force

Simulated Experiments for Teaching CAD Techniques Using Analytic and Finite Element Solutions of Electromagnetic Two-Dimensional Problems with Longitudinal Symmetry

A fiber Bragg grating direct current sensor with temperature compensation based on electromagnetic force

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