Design of a Single-Sided, Coreless, Flat-Type Linear Voice Coil Motor

Zhang, Wei; Zhang, He; Mu, Junren; Wang, Song

doi:10.3390/act12020077

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…The simple structure of DLSM offers high flexibility to the machine in terms of size and space, with the few components needed in the motor and limited lubrication making installation and maintenance easy. Due to linear machines' advantages in delivering precise linear motion and accurate positioning, they have found widespread use in various industries for applications requiring the precise control of linear motion [5]. DC linear stepper motors are frequently employed in industrial automation systems, such as pick-and-place machines, material handling equipment, and robotic systems.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Design and Performance of a DC Linear Stepper Motor

Habil,

Anayi,

Xue

et al. 2023

Machines

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This paper describes the design and modelling of a DC linear stepper motor (DLSM), to investigate the air-gap magnetic flux density and the static features of the thrust force under the DC current excitation condition, while taking the nonlinear properties of iron materials used into account. A Finite Element Method (FEM) study utilizing software called a “MagNet” was employed to model and construct a linear DC motor. The thrust force, air-gap flux density, and static thrust force at various airgaps were compared in simulation and real time. The result showed that the magnetic flux density presents a sinusoidal shape in both the simulation and measurement, where the peak error value was around 7.14%. A comparison was made with thrust force, as the armature current has different values; the results show that the difference between the experimental and computed peak value was 8.07%, while the error between the measured and simulated value was 5.02% when the thrust force was measured at different air gap lengths.

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Section: Introductionmentioning

confidence: 99%

Analyzing the Design and Performance of a DC Linear Stepper Motor

Habil,

Anayi,

Xue

et al. 2023

Machines

View full text Add to dashboard Cite

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Study on the Accurate Magnetic Field Analytical Model of an Inertial Magnetic Levitation Actuator Considering End Effects

Wu,

Chen,

Yuan

et al. 2024

Actuators

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To address the demand for low noise and high stealthiness in ships and other vessels, this paper innovatively proposes an inertial magnetic levitation actuator based on non-uniform-sized Halbach permanent magnet arrays. To improve control accuracy, it is necessary to establish an accurate analytical model of the magnetic field and then obtain an accurate electromagnetic force model. However, the distortion of the magnetic field at the ends produces end effects, resulting in thrust fluctuations that affect the actuator’s control accuracy. Therefore, considering the end effects is necessary to establish an accurate analytical model of the magnetic field. To analyze the end leakage magnetic field of the Halbach array, the concept of a mechanical pseudo-cycle in the actuator is proposed, and the cycle of a Fourier series is redefined. A completed analytical expression of the Halbach array magnetic field distribution is derived by the new Fourier series, in which the end leakage magnetic field is contained. The accuracy of the proposed method is verified by solving the analytical model of the magnetic field, and the analytical results are compared with finite element simulations and experimental tests.

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Rapid and Precise Zoom Lens Design Based on Voice Coil Motors with Tunnel Magnetoresistance Sensors

Gong,

Luo

2024

Applied Sciences

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In response to the zooming delay issue during the transition from a wide-area search to high-resolution target identification in high-magnification zoom lenses, we propose a drive technology based on voice coil motors. The linear motion of the motor is directly converted into the linear movement of the zoom lens group, significantly enhancing the zoom speed. Additionally, we introduce a high-precision closed-loop control technology utilizing a magnetic scale to achieve the rapid and precise positioning of the zoom lens group. The magnetic scale detection technology achieves precise positioning by detecting periodic changes in the magnetic field, working in conjunction with tunnel magnetoresistance sensors. Demonstrated with a 40× zoom lens example, this study elaborates on the motion trajectory planning and structural dimension design process of a voice coil motor, culminating in the assembly of a physical prototype. Practical validation experiments show that the full zoom time of the lens utilizing our technology is less than 0.3 s, where the full zoom time refers to the time required for the lens to zoom from the wide-angle end to the telephoto end. In positioning accuracy test experiments, lenses using our technology achieved a positioning deviation of less than 5 μm.

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Design of a Single-Sided, Coreless, Flat-Type Linear Voice Coil Motor

Cited by 3 publications

References 2 publications

Analyzing the Design and Performance of a DC Linear Stepper Motor

Analyzing the Design and Performance of a DC Linear Stepper Motor

Study on the Accurate Magnetic Field Analytical Model of an Inertial Magnetic Levitation Actuator Considering End Effects

Rapid and Precise Zoom Lens Design Based on Voice Coil Motors with Tunnel Magnetoresistance Sensors

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