Design and analysis of helical motion permanent magnet motor with cylindrical halbach array

Jang, Seok–Myeong; Lee, Sungho; Cho, Han Wook; Cho, Sung Kook

doi:10.1109/tmag.2003.816724

Cited by 45 publications

(2 citation statements)

References 7 publications

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“…We applied this concept to the device using multiple permanent magnets. The performance of the Halbach array has been proven in the field of industrial machinery, such as in motors [30][31][32].…”

Section: Halbach Arraymentioning

confidence: 99%

Wearable Fixation Device for a Magnetically Controllable Therapeutic Agent Carrier: Application to Cartilage Repair

Lee

Yoo³

et al. 2020

Pharmaceutics

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Recently, significant research efforts have been devoted toward the development of magnetically controllable drug delivery systems, however, drug fixation after targeting remains a challenge hindering long-term therapeutic efficacy. To overcome this issue, we present a wearable therapeutic fixation device for fixing magnetically controllable therapeutic agent carriers (MCTACs) at defect sites and its application to cartilage repair using stem cell therapeutics. The developed device comprises an array of permanent magnets based on the Halbach array principle and a wearable band capable of wrapping the target body. The design of the permanent magnet array, in terms of the number of magnets and array configuration, was determined through univariate search optimization and 3D simulation. The device was fabricated for a given rat model and yielded a strong magnetic flux density (exceeding 40 mT) in the region of interest that was capable of fixing the MCTAC at the desired defect site. Through in-vitro and in-vivo experiments, we successfully demonstrated that MCTACs, both a stem cell spheroid and a micro-scaffold for cartilage repair, could be immobilized at defect sites. This research is expected to advance precise drug delivery technology based on MCTACs, enabling subject-specific routine life therapeutics. Further studies involving the proposed wearable fixation device will be conducted considering prognostics under actual clinical settings.

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Section: Halbach Arraymentioning

confidence: 99%

Wearable Fixation Device for a Magnetically Controllable Therapeutic Agent Carrier: Application to Cartilage Repair

Lee

Yoo³

et al. 2020

Pharmaceutics

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“…Although the radial parallel structure improves the integration of the motor, the magnetic coupling and motion coupling effects may make the energy coupling behavior more complex. Therefore, a novel Halbach‐based radial parallel‐type double‐armature permanent magnet LRM is proposed in Jang et al 13 However, the magnetic field of the inner and outer armatures is prone to saturation at the mover yoke, which affects the electromechanical energy conversion rate. Overall, the double‐armature LRMs can effectively reduce the magnetic field coupling effect, and suppress energy coupling behavior.…”

Section: Introductionmentioning

confidence: 99%

Equivalent circuit modeling and optimization design for a novel double‐stator linear‐rotary switched reluctance motor

Qi,

Bu,

et al. 2023

Circuit Theory & Apps

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SummaryThe energy coupling behavior is propagated through the magnetic field and would seriously affect the operation performance of two‐degree‐of‐freedom motion system based on linear‐rotary motor. This paper proposes a novel double‐stator linear‐rotary switched reluctance motor (DSLR‐SRM) to suppress the energy coupling behavior. First, the structure and operation principles of DSLR‐SRM are presented. The two stators of DSLR‐SRM are radially arranged to perform the independent magnetic circuit and suppress the energy coupling behavior through the magnetic field. Then, an equivalent circuit model is established to shorten the modeling and calculation time. It could be found that the energy coupling behavior directly affects the torque and force performance. Next, the sensitivity of the DSLR‐SRM dimensions is developed. Meanwhile, the dimensions of DSLR‐SRM are optimized to enhance the torque and force output via TOPSIS decision‐making. Finally, the validity of equivalent circuit modeling analysis and optimization results are verified through three‐dimensional finite element model.

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A Direct Drive θ‐Z Motor for Rotary and Linear Motion

Makino

Shikayama

Murokita

et al. 2016

Electrical Engineering Japan

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SUMMARYA multidimensional positioning mechanism, along with high speed and high accuracy, is essential for an industrial machine. A positioning machine operates precisely in both vertical linear motion (z‐axis) and rotary motion (θ‐axis). A ball screw mechanism is used for the z‐axis whereas a servo motor is used for the θ‐axis. We developed a direct drive θ‐z motor for rotary and linear motion. Torque and thrust are generated directly by the mover. Thus, high speed and high accuracy as well as miniaturization are achieved without using machine elements such as a ball screw and belt. In this paper, we describe the structure and operating principle of the θ‐Z motor, and the sensor that can detect the θ‐axis and the z‐axis position. In addition, we consider a design method that minimizes copper loss by taking advantage of the shape of the permanent magnet and coil. Furthermore, using a prototype we evaluated the characteristics of torque, thrust, and repeatability.

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Design and analysis of helical motion permanent magnet motor with cylindrical halbach array

Cited by 45 publications

References 7 publications

Wearable Fixation Device for a Magnetically Controllable Therapeutic Agent Carrier: Application to Cartilage Repair

Wearable Fixation Device for a Magnetically Controllable Therapeutic Agent Carrier: Application to Cartilage Repair

Equivalent circuit modeling and optimization design for a novel double‐stator linear‐rotary switched reluctance motor

A Direct Drive θ‐Z Motor for Rotary and Linear Motion

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