Surface Magnetic Flux Density
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129 - Characteristic Analysis of a PM Stepping Motor Accounting for Magnetization
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Module:ST,TR |
2011-01-17 |
Stepper motors are commonly used for positioning in printers and digital
cameras.The magnetization of the magnets used for the PM stepping motor
largely affect the motor's characteristics.Therefore, it is advantageous
to accurately measure the characteristics of the PM stepping motor by clearly
defining the magnetization with an analysis.This example presents the use
of magnet field analyses to obtain the induced voltage of a PM stepping
motor that combines magnetization distribution, surface flux density, and
magnetization of magnets magnetized with a magnetization device.
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46 - Surface Magnetic Flux Density Analysis Accounting for the Magnetization
Direction
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Module:DP,ST |
2011-07-12 |
Cogging torque is produced as a motor rotates. Problems such as a reduction
in efficiency, vibrations, and noise can be improved by reducing the amount
of cogging torque that occurs. One factor that affects the cogging torque
is the direction the magnets are magnetized. This example presents the
use of a magnetic field analysis to obtain the surface magnetic flux density
for the radial pattern, parallel anisotropy pattern, and the polar anisotropy
pattern of magnets. Furthermore, the flux linkage, induced voltage, and
cogging torque are obtained for an SPM motor that uses magnets with these
magnetization patterns.
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