Analysis of Tubular Linear Motors for Different Shapes of Magnets

Abdalla, Izzeldin Idris; Ibrahim, Taib; Nor, Nursyarizal Mohd

doi:10.1109/access.2017.2775863

Cited by 29 publications

(15 citation statements)

References 21 publications

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“…The control input is designed to force error vector converge to small region centered at origin. Moreover, , satisfies the following constraints: To achieve control objective (9), min-max model predictive control proposed in [6] was applied. The operation of the position controller is devided into two modes: an "inner" and an "outer" controller.…”

Section: Control Of Position Subsystemmentioning

confidence: 99%

“…Linear Motor transmission systems are widely applied to provide directed straight motions in which, mechanical actuators are eliminated, resulting in better performance of motion systems. Generally, Polysolenoid Linear Motor (PLM) has a durable structure, operations according to electromagnetic phenomenon with principles as shown in [1][2][3][4][5][6][7][8][9][10][11][12] and various applications such as CNC Lathe [13], sliding door [14]. Without the need of any gear box for motion transformation, the PLM system becomes sensitive due to external impacts such as frictional force, endeffect, changed load and non-sine of flux.…”

Section: Introductionmentioning

confidence: 99%

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On tracking control problem for polysolenoid motor model predictive approach

Quang

Hai

et al. 2020

IJECE

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The Polysolenoid Linear Motor (PLM) have been playing a crucial role in many industrial aspects due to its functions, in which a straight motion is provided directly without mediate mechanical actuators. Recently, with several commons on mathematic model, some control methods for PLM based on Rotational Motor have been applied, but position, velocity and current constraints which are important in real systems have been ignored. In this paper, position tracking control problem for PLM was considered under state-independent disturbances via min-max model predictive control. The proposed controller forces tracking position errors converge to small region of origin and satisfies state including position, velocity and currents constraints. Further, a numerical simulation was implemented to validate the performance of the proposed controller.

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Section: Control Of Position Subsystemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On tracking control problem for polysolenoid motor model predictive approach

Quang

Hai

et al. 2020

IJECE

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show abstract

“…Although the general framework has been well established in literature for analysis and design of the PMLM with regular rectangularshape permanent magnets either in vertical-array, horizontalarray, quasi-Halbach, or Halbach configurations [15]- [17], there are quite few references on the analytical models for motors with trapezoidal-shape magnets. In [18] and [19], semi-analytical models have been reported for the PMLM with trapezoidal-shape magnets. However, they are just applicable for tubular version instead of the flat PMLM.…”

Section: Analytical Modeling Of Magnetic Field Emf and Thrust mentioning

confidence: 99%

“…However, they are just applicable for tubular version instead of the flat PMLM. And further, the models in [18] and [19] are equipped with iron yokes to complete the magnet flux loop. When the iron yokes are eliminated (as shown in Fig.…”

Section: Analytical Modeling Of Magnetic Field Emf and Thrust mentioning

confidence: 99%

Performance Modeling and Analysis of a Doubly Yokeless Permanent Magnet Linear Motor With Improved Thrust Force Quality

et al. 2019

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Permanent magnet linear motors (PMLM) have gained increased popularities in a wide range of applications. However, they generally suffer from considerably lower force densities. In this paper, a novel doubly yokeless PMLM equipped with quasi-Halbach trapezoidal-shape permanent magnets is presented to both increase the thrust force density and suppress the thrust ripple. Both the stator and the translator are yoke-free, and therefore, the increase of the installation space for the windings is conducive to enhancing the magneto-motive force and the thrust density of the motor. An analytical model is developed to predict the magnetic field distribution and electromagnetic performance of the doubly yokeless PMLM, and finite element computations are undertaken to validate the effectiveness and accuracy of the proposed model. The thrust performance is then optimized against magnet parameters under a specific set of volumetric constraints to the improve the thrust force quality. It is shown that the Halbach ratio and bottom angle of the trapezoidal magnets have significant impacts on the thrust force quality (in terms of both the average thrust and thrust ripple), and optimal values for the two parameters are obtained. The benefits of the doubly yokeless PMLM are highlighted by comparisons with a conventional PMLM with iron yokes.

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“…Apart from moving PMs, the mover consist of coils in the motor has been designed, with armature reaction analyzed in [3]. Some PMs are optimized for linear motors to improve their performance in [4], [5]. Also, some LOMs with an iron core have also been developed recently and there are two classifications for different core shapes including C-core and E-core, respectively.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of a Homopolar Permanent-Magnet Linear Tubular Motor Equipped With the E-Core Stator

Zou

Cheng

2019

IEEE Access

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In this study, a new homopolar permanent-magnet (PM) linear tubular motor is designed, analyzed and optimized. Firstly, a mechanical structure of the linear oscillating motor (LOM) is proposed and the main working principles are introduced. A basic dynamic mathematic model of the motor is given. Secondly, the magnetic circuit of the motor is analyzed and equivalent magnetic modes are obtained to estimate the magnetic characteristic and force outputs. Thirdly, optimizations including the tooth stricter of the E-core stator, the size of the PM and the air gap length are carried out to improve the force output performance of the motor, increasing force outputs and reducing force ripples during the stroke. Finally, the motor prototype is manufactured according to the design and experimental tests involving force outputs and working efficiency are measured. The average force output and efficiency of the motor can achieve 60 N and 67 %, respectively. Results obtained by finite element method (FEM) and experiments prove the correctness of the design and the effectiveness of the LOM.

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Analysis of Tubular Linear Motors for Different Shapes of Magnets

Cited by 29 publications

References 21 publications

On tracking control problem for polysolenoid motor model predictive approach

On tracking control problem for polysolenoid motor model predictive approach

Performance Modeling and Analysis of a Doubly Yokeless Permanent Magnet Linear Motor With Improved Thrust Force Quality

Design and Optimization of a Homopolar Permanent-Magnet Linear Tubular Motor Equipped With the E-Core Stator

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