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Linear motors take the stator and rotor concept of a rotary motor and unroll it into a linear configuration. While this is not a new technology, advances in the past few decades – including increased efficiency, greater power density, and more advanced controls – have made this drive type ideal for high precision motion control solutions. Growing popularity and use in applications requiring precision motion control have sparked a reduction in cost and made linear motors a more economical option for many applications.
This article begins by explaining the mechanics of a direct drive linear motor and contrasts it with a more traditional indirect drive system. With this foundation, we'll look at different types of linear motors and highlight their benefits to help identify the kinds of applications for which each is suitable. Finally, we'll cover some of the unique benefits provided by Zaber's direct drive linear motor devices.