Magnetic Application in Linear Motor

  • Hiroyuki WakiwakaEmail author
Part of the Engineering Materials book series (ENG.MAT.)


In this chapter, small- and medium-sized linear motors used in the industrial field are considered, firstly classified into four types based on their operation principle, and their each features are described. Next, the method of characterizing the linear motor is explained, and some of the characteristic evaluation indexes are shown. Furthermore, in order to evaluate the characteristics of the linear motor, the relation between the thrust and the tangential stress is explained, and the traditional magnet array, the repulsion type array, and the Halbach magnet array are shown as the magnet arrangement in the case of permanent magnet field. In addition, recently developed several high-performance linear synchronous motors are classified into permanent magnet field type and variable reluctance type from the viewpoint of thrust source. Finally, the values of the motor constant square density of those synchronous motors are compared.


Classification of linear motors Characteristic evaluation index Permanent magnet field Variable reluctance LSM classification Motor constant square density 


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Shinshu UniversityNaganoJapan

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