At the end of this module, you will be able to:
- Describe the purpose and operation of an alternating current induction motor
- Describe the purpose and operation of a direct current motor
- Describe the purpose and operation of a servomotor
- Describe the purpose and operation of a linear motor
The following key questions are answered in this module:
What are the most common types of industrial electric motors?
AC or alternating current motors are most common because they are very low maintenance and extremely reliable.
What are the main components of an AC induction motor
In an AC induction motor, the main components are a rotor and a stator. The rotor spins inside of the stator.
What are some advantages of DC motors?
DC motors often employ compact design and can run on batteries, increasing portability. They also offer a high degree of torque and speed control.
What is a servomotor?
A servomotor is a motor designed to provide precise movement using closed loop control. They employ a controller and a feedback device to determine the force and movement of the motor.
What are some applications of linear motors?
Linear motors can be used in machines that require linear or back-and-forth motion, like overhead travelling cranes, beltless conveyors, and machine positioning systems. Notably, they are used in the latest generation of high-speed magnetic levitated trains.
Below is a transcript of the video sample provided for this module:
A linear motor is an electric induction motor that produces a linear force instead of a rotation. This is accomplished by unrolling the stator and rotor. The stator known as the platen in a linear motor, is a track of flat coils of copper or aluminum. The rotor takes the form of a moving carriage known as the forcer. When the current is switched on, the forcer glides past the platen supported and propelled by a magnetic field.
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