![]() In a permanent-magnet motor, when power is applied to the motor, the rotor will seek the most stable position it can find. When power is removed from the motor, it will not resist turning by external forces. A variable-reluctance stepper motor is, in contrast, entirely electromagnetic. A more complex disk, generally used in precision motors, may interlace many poles around the outside of the disk. In a permanent-magnet stepper motor, the rotor uses a disk made of magnetic materials. However, to ensure that the motor control remains precise at all operating points for the application, it is important to tune the motor to the controller.Ī typical stepper comprises a stator, a rotor attached to a shaft and a number of coil windings that are used to generate magnetic fields at fixed positions around the stator. This makes the motor ideal for applications that call for precise positioning and speed control. Unlike a standard DC motor, which is designed for continuous rotation, the stepper motor provides the ability to rotate around an axis one step at a time. The stepper motor is a popular choice for intelligent precision motion control. ![]()
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