Linear Motor

JMAG can be used to model linear electric machines. When modeling a linear machine, it is critically important to have an accurate model of the forces on the tooth tips. This requires very accurate mesh that can account for model symmetry. If the mesh is not symmetrical, it may produce numerical errors in the force calculation. Accurate mesh is also necessary when testing precise movements of the components.

Evaluation Items

Cogging force, thrust force, attractive force, response, eddy current, residual magnetization, current control, induced voltage, efficiency, loss, heat generation, vibration and noise

Case Studies

Electromagnetic-Force Analysis

A harmonic analysis of the torque waveforms will help identify the optimal magnet skew. An appropriate skew angle will reduce cogging torque by 50% or more while maintaining the same thrust force. Reducing cogging torque will drastically reduce the amount of noise that the machine generates.




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    • Application Catalog

    2 – Cogging Analysis of a PM Linear Motor

    OverviewLinear motors have been widely used in carrier devices and the drive units of machine tools due to their capability for high acceleration and deceleration, as well as their accurate positioni…

    30 Oct 2006

    • Application Catalog

    41 – Positioning Control Analysis of a Permanent Magnet Linear Motor Using the Control Simulator and the JMAG-RT

    OverviewLinear motors are widely used for carrier devices and machine tools because of their high-speed performance, high acceleration and deceleration, and accurate positioning. A type of linear mot…

    16 Jan 2008

    • Application Catalog

    64 – Thrust Force Analysis of a Coreless Linear Motor

    OverviewLinear motors are widely used for carrier devices and machine tools because of their high-speed performance, high acceleration and deceleration, and accurate positioning. Among them there is …

    24 Oct 2008

    • Application Catalog

    54 – Analysis of the Cogging Force of a Moving Coil Linear Motor

    OverviewLinear motors have been widely used in carrier devices and the drive units of machine tools due to their capability for high acceleration and deceleration, as well as their accurate positioni…

    • Application Catalog

    104 – Thrust Force Analysis of a Linear Induction Motor

    OverviewLinear motors are widely used for carrier devices and machine tools because of their high-speed performance, high acceleration and deceleration, and accurate positioning. One type of linear m…

    9 Mar 2009

    • Application Catalog

    134 – Speed Control Analysis of a Permanent Magnet Linear Motor Using the Control Simulator and the JMAG-RT

    OverviewLinear motors are widely used for carrier devices and machine tools because of their high-speed performance, high acceleration and deceleration, and accurate positioning. A type of linear mot…

    26 Nov 2009

    • JMAG Users Conference Proceedings

    Development of Cylindrical Linear Motor for Lift-Motion

    Akihito Toyota, Energy Conversion Technology Group, Corporate R&D Center, Technology & Development Div. Yaskawa Electric Corporation, 12-1 Otemachi, Kokurakita-ku, Kitakyushu City, Fukuoka 803-8530 J…

    13 Mar 2013

    • JMAG Users Conference Proceedings

    Development of a rail brake for railway vehicles derived from linear motor technology

    Yasuaki Sakamoto, Maglev Systems Technology Division, Railway Technical Research Institute

    13 Mar 2015

    • JMAG-RT Model Library

    [RTML-045] LSM_01

    Features and principal useGeometry display on JMAG-DesignerTypeModelLSM_01Model nameLSMMax. Power2(kW)Direct current voltageDC400(V)Number of Poles4Number of Slots24Number of Phases3MoverSPMMover (Le…

    6 Mar 2018

    • Application Catalog

    112 – Starting Thrust Force Analysis of a Linear Induction Motor

    OverviewLinear motors are widely used for carrier devices and machine tools because of their high-speed performance, high acceleration and deceleration, and accurate positioning. One type of linear m…

    8 Mar 2018

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