Force Characteristics of the H-Module Linear Actuator With Varying Tooth-Shift-Distance

The large normal force of a single-sided linear actuator may cause vibration, noise and reduce the positioning accuracy. To overcome these disadvantages, a new H-module linear actuator (HMLA) is proposed to reduce effectively the normal force without using expensive air suspension system or assisted...

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Veröffentlicht in:IEEE transactions on magnetics 2013-07, Vol.49 (7), p.3842-3845
Hauptverfasser: Liu, Xiao, Chen, Zhe, Lu, Kaiyuan, Ye, Yunyue
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creator Liu, Xiao
Chen, Zhe
Lu, Kaiyuan
Ye, Yunyue
description The large normal force of a single-sided linear actuator may cause vibration, noise and reduce the positioning accuracy. To overcome these disadvantages, a new H-module linear actuator (HMLA) is proposed to reduce effectively the normal force without using expensive air suspension system or assisted guide. Compared to the existing HMLA, the teeth on the two opposite sides of the stator of this new HMLA are shifted by a tooth-shift-distance t_{\rm sd} . With a proper choice of t_{\rm sd} , the electromagnetic design and the force characteristics of the HMLA may be greatly improved. The finite element method (FEM) is employed to analyze the magnetic performance and the force characterization of an optimized HMLA with varying t_{\rm sd} . The performances when the HMLA is excited by rectangular and sinusoidal waveform currents are investigated. The result presented in this paper has shown that the total average tangential force of this new HMLA could be improved by 51% in comparison to the existing HMLA.
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To overcome these disadvantages, a new H-module linear actuator (HMLA) is proposed to reduce effectively the normal force without using expensive air suspension system or assisted guide. Compared to the existing HMLA, the teeth on the two opposite sides of the stator of this new HMLA are shifted by a tooth-shift-distance t_{\rm sd} . With a proper choice of t_{\rm sd} , the electromagnetic design and the force characteristics of the HMLA may be greatly improved. The finite element method (FEM) is employed to analyze the magnetic performance and the force characterization of an optimized HMLA with varying t_{\rm sd} . The performances when the HMLA is excited by rectangular and sinusoidal waveform currents are investigated. 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subjects Actuators
Cross-disciplinary physics: materials science
rheology
Electromagnetism
Exact sciences and technology
Force
Linear actuator
Magnetic flux
Magnetic separation
Magnetism
Materials science
normal force
Other topics in materials science
Physics
Stator cores
Studies
tangential force
Topology
title Force Characteristics of the H-Module Linear Actuator With Varying Tooth-Shift-Distance
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