Definition of linear motor in US English:

linear motor


  • An electric induction motor that produces straight-line motion (as opposed to rotary motion) by means of a linear stator and rotor placed in parallel. It has been used to drive streetcars and monorails, where one part of the motor is on the underside of the vehicle and the other is in the track.

    • ‘The experimental chambers were modified so that the upper fiber holder was attached to a linear motor, which allowed rapid unloading of the fibers with subsequent restretch to the original length.’
    • ‘The intended application for these devices is as a replacement for small linear motors in various industries, including medical.’
    • ‘Germany has abandoned plans to build a linear motor system between Berlin and Frankfurt.’
    • ‘The systems offer high speed linear motor technology with contouring speeds up to 1,500 ipm.’
    • ‘The company has been promoting its linear motor driven series of machining centers for the past several years.’
    • ‘The counter mass, which floats on air bearings, is attached to a linear motor guide (stator).’
    • ‘The linear motor along each 37-m section of the 30-km track turns off as the train passes, rendering collisions on the same route virtually impossible, says Robert Budell, Transrapid spokesman.’
    • ‘According to the company, the high-speed linear motor wheelhead follows the eccentric profile and achieves roundness to 2 microns.’
    • ‘The linear compressor comprises a hermetic vessel having a compressing mechanism portion and a linear motor therein.’
    • ‘Unlike conventional trains, there is no friction between the wheels and the rails, and linear motors soundlessly propel the train forward allowing it to accelerate to very high speeds within a few seconds.’
    • ‘The magnetic field of the linear motor is self-contained within the U-channel design.’
    • ‘However, in September 1996 NASA commissioned Laithwaite to develop a rocket launcher using linear motors.’
    • ‘Another impact on price is that the linear motors are larger than that of helical scan, making power issues more costly.’
    • ‘The exposed incremental linear encoder from Heidenhain is suitable for production equipment in the automation and electronics industries and for applications on linear motors.’