Linear motors

Linear motors

Linear motors

07/14/16

“What would happen if you made a machine by unfolding a rotary motor?”

Let’s suppose that we want to move something in a linear direction in a highly efficient manner.  What if we took a rotary motor, and unfolded the shell so it would move in a linear direction? Believe it or not, not only does this work in theory, but it has been accomplished before. Engineers have termed this mechanism a linear motor.

To get the big picture, the linear motor works as follows; A square forcer will include an iron core and a thermal protection device. This forcer will rest on a stator will encase magnets, electric wires, a base, and a shield. A Linear guideway will be placed in between the forcer and the stator to allow for movement of the former. The forcer will be housed in forcer plates, and finally a position encoder will be attached to provide feedback on the position of the linear motor. The forcer moves because the controller will provide a constantly changing current at different times to the windings, which in turn will interact with the conductive rotor, causing a magnetic force on the forcer, which will move the rotor at very high speeds.

Linear motors are very pragmatic for many uses. Linear motors have no wearing parts, which makes them faster to build, have longer life cycles, have more efficient temperature control, have higher velocities, and much less polluting to maintain. Linear motors are often applied for industrial, servomechanism, and transportation purposes. Countries such as Germany, Japan, China, the , and the USA are currently using or considering linear motors for transportation purposes.

 

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