3-D Analytical Linear Force and Rotary Torque Analysis of Linear and Rotary Permanent Magnet Actuator

Jin, Ping; Lin, Heyun; Fang, Shuhua; Yuan, Yeping; Guo, Yujing; Zhou, Jia

doi:10.1109/tmag.2013.2238897

Cited by 16 publications

(6 citation statements)

References 9 publications

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“…Linear rotary actuator can be divided into several classes according to the stator number, namely, single stator structure, double stator structure, multi-stator structure and split-half stator structure [1]. The single stator structure is classified in several categories, including two sets of armature windings [2][3][4], concentrated windings [5] [6] and spiral windings structure [7]. In [2][3][4], since the rotary and linear windings are orthogonal, there are crosscoupling in the magnetic field of the motor.…”

Section: Introductionmentioning

confidence: 99%

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Decoupling Control Analysis of a Flux Reversal Linear Rotary Permanent Magnet Actuator

Guo

2020

J. Electr. Eng. Technol.

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In order to meet the requirement of industrial production, a control system of a novel flux reversal linear rotary permanent magnet actuator (FR-LRPMA) is developed in this paper, and the electromagnetic and motion decoupled process is analyzed in detail. Firstly, the control equation of FR-LRPMA is derived in the nine phase stator coordinate system and dual dq-axis mover coordinate system. Then the control model of FR-LRPMA is built in MATLAB/Simulink using improved space vector pulse width modulation (SVPWM), and the linear, rotary and spiral motions of the proposed actuator are achieved. Finally, the prototype of the actuator is manufactured, and the experiment platform of FR-LRPMA is set up to measure the cogging torque and linear detent force, validating the simulation results. It is concluded that the control system of FR-LRPMA can be converted into two independent single freedom motors by dual dq transformation. The improved SVPWM is effective in the control system, and the method can be used to solve the electromagnetic and motion decoupling problems.

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Section: Introductionmentioning

confidence: 99%

“…In [2][3][4], since the rotary and linear windings are orthogonal, there are crosscoupling in the magnetic field of the motor. In [5] [6], there are multiple sets of concentrated windings. The control system and control strategy are difficult and complicated.…”

Section: Introductionmentioning

confidence: 99%

Decoupling Control Analysis of a Flux Reversal Linear Rotary Permanent Magnet Actuator

Guo

2020

J. Electr. Eng. Technol.

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“…Conceptually, a LinearRotary Actuator (LiRA) can be realized by mechanical or magnetic coupling of linear and rotary electrical machines [1], [4]. Mechanical coupling can be realized with an arrangement where one machine, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…In this arrangement, the linear and rotary machines are magnetically decoupled by the back iron (magnetic yoke) of the mover. Conversely, the actuator topology analyzed in [4] is an example of a complete magnetic coupling of a linear and rotary machine, i.e. the same magnetic materials are used for both movements.…”

Section: Introductionmentioning

confidence: 99%

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Comparative evaluation of linear-rotary actuator topologies for highly dynamic applications

Mirić

Tüysüz

Kolar

2017

2017 IEEE International Electric Machines and Drives Conference (IEMDC)

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Abstract-A Linear-Rotary Actuator (LiRA) is an electrical machine whose mover can move linearly and rotate as a direct drive (without mechanical transmissions/gearboxes). Such actuators are successfully used in various applications such as pickand-place machines that mount components on Printed Circuit Boards (PCBs), servo actuation of gearboxes, and in robot arms and/or end effectors. In order to design a compact LiRA with high dynamics, two different LiRA topologies are compared in this paper. A fair comparison is obtained by fixing the outer dimensions of the examined LiRA topologies (diameter and length). Electrical loading of the machines is determined using a simple thermal model, and an optimization based on finite element analysis is carried out. Performance criteria, such as circumferential and axial accelerations as well as maximum axial forces of all analyzed machines are compared. Moreover, metrics like total machine mass and volume of the used permanent magnets are included in the evaluation.

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Comparative Study of Two Degree-of-Freedom Rotary-Linear Machines With Permanent-Magnet Mover for High Dynamic Performance

Cai

Zhou

et al. 2022

IEEE Access

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This paper analyzes and evaluates various topologies of yokeless rotary-linear (RL) machine with permanent-magnet (PM) mover targeting for the achieving high dynamic performance. For the conventional yokeless RL machines, the single-stator topology features limited slot area for armature winding excited for both motions, and the coupled magnetic fields of both motions requires complex control strategy. In order to mitigate these issues, a double-stator RL machine with hybrid PMs array, which adopts the PMs with six magnetization directions, is proposed in this paper. An improved PMs array is introduced for the double-stator topology to achieve decoupled control for both motions. In addition, an analytical model of the radial flux density is derived to reveal the characteristics of the magnetic fields in different topologies. The parametric studies towards key dimensions are conducted to provide design guidelines and obtain the optimal design. Finally, the electromagnetic performances of the proposed design are compared systematically with the conventional single-stator counterparts. It is revealed that the proposed topology can enhance the performances in both motions, namely rotary and linear motions.

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3-D Analytical Linear Force and Rotary Torque Analysis of Linear and Rotary Permanent Magnet Actuator

Cited by 16 publications

References 9 publications

Decoupling Control Analysis of a Flux Reversal Linear Rotary Permanent Magnet Actuator

Decoupling Control Analysis of a Flux Reversal Linear Rotary Permanent Magnet Actuator

Comparative evaluation of linear-rotary actuator topologies for highly dynamic applications

Comparative Study of Two Degree-of-Freedom Rotary-Linear Machines With Permanent-Magnet Mover for High Dynamic Performance

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