Parametric Study of a Permanent-Magnet Stepper Motor’s Stepping Accuracy Potential

Škofic, Jan; Koblar, D.; Boltežar, Miha

doi:10.5545/sv-jme.2013.1526

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…In the driving system of the camera module, the stepping motor realizes the focal length adjustment of the lens through the precise screw drive [2]. However, the inherent existence of its detent torque affects the stability and positioning accuracy of the motor [3]. As the size of the permanent magnet stepper motor becomes smaller and smaller, the side effect of its detent torque increases relatively.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Detent Torque and Holding Torque of a Micro-Claw Pole Stepper Motor

Sun

Wang

et al. 2022

Micromachines

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The micro-claw pole stepper motor is widely used in the field of camera modules and VR focusing. The influence of torque ripple on positioning accuracy becomes more obvious with a decrease in motor volume. In order to reduce the torque ripple of the micro-claw stepper motor and increase the load capacity of the motor, the torque of the motor is simulated by using finite element software. Firstly, the influences of four parameters, namely air gap, magnet thickness, claw thickness and claw height, on the detent torque and holding torque of the claw permanent magnet stepper motor are obtained through the Taguchi experiment. The Signal-to-noise ratio (SNR) of each factor to the response was calculated and the degree of influence of the four parameters on the detent torque and holding torque of the micro-claw pole permanent magnet stepper motor was determined. Then, the optimal value of each factor to reduce the detent torque and increase the holding torque was obtained through optimization analysis. Finally, experiments were carried out to test the holding torque of the motor, and the accuracy of the results was verified by comparing the test values with the simulation values. According to the analysis of the paper, the response delta of air gap to detent torque is the largest, reaching 5.99, and that to holding torque is 0.73. The response delta of the magnet thickness to the detent torque is 5.87, and the response delta to the holding torque is 1.52. The optimized parameters obtained by optimization analysis reduce the detent torque of the motor by 26.74% and increase the holding torque by 18.35%. It is found that air gap and permanent magnet thickness have the greatest influence on the detent torque and holding torque of a micro-claw permanent magnet stepper motor, followed by claw thickness and claw height. Among them, the air gap has more influence on the detent torque than on the holding torque, and the thickness of the permanent magnet has more influence on the holding torque than on the detent torque.

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Section: Introductionmentioning

confidence: 99%

A Study on the Detent Torque and Holding Torque of a Micro-Claw Pole Stepper Motor

Sun

Wang

et al. 2022

Micromachines

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Arduino-based object rotator for modified 3D Micro-CT for non-destructive testing application

Susilo

Darsono

Taufiq

et al. 2020

J. Phys.: Conf. Ser.

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This paper presents the development of an object rotator to be applied in digital radiography to modify it as 3D micro-CT. The device was developed using I2C LCD display, tactile buttons and a stepper motor with an L293D motor shield. The first development stage was testing all components. The circuit was designed and then realized using the components that were tested. The device was designed to rotate discretely from rotation angle of 0 – 360° in 256 steps. For performance testing, the device was tested for a rotation angle range of 0° to 90°. The images of each rotation were captured and measured by Inkscape to determine the magnitude of the rotate angle of the object rotating device. The measurement results are compared with theoretical data to determine device error. The highest error was 4.79%. The device was then applied in digital radiography as an object rotator so that the digital radiography functioned as a micro-CT. By using a phantom as an object, the device as an object rotator in micro-CT was tested. The results showed that the device could capture and develop a 3D image of the phantom.

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Evaluation of Accuracy and Repeatability of Scanning Probe Microscope Positioning System

Rožėnė

Striska

Treciokaite

et al. 2021

2021 IEEE Open Conference of Electrical, Electronic and Information Sciences (eStream)

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Parametric Study of a Permanent-Magnet Stepper Motor’s Stepping Accuracy Potential

Cited by 4 publications

References 20 publications

A Study on the Detent Torque and Holding Torque of a Micro-Claw Pole Stepper Motor

A Study on the Detent Torque and Holding Torque of a Micro-Claw Pole Stepper Motor

Arduino-based object rotator for modified 3D Micro-CT for non-destructive testing application

Evaluation of Accuracy and Repeatability of Scanning Probe Microscope Positioning System

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