Types of stepper motor explained

The video tutorial covers three types of motors: the permanent magnet motor, the variable reluctance stepper motor, and the hybrid stepper motor. It explains the design and operation of each motor type, highlighting the differences in rotor and coil configurations. The permanent magnet motor uses a diametrically magnetized rotor and pairs of coils to create rotation. The variable reluctance motor features a soft iron rotor with teeth and uses switches to control coil magnetization. The hybrid stepper motor combines elements of both previous types, offering high precision and torque with a complex rotor and stator design.

What is the primary characteristic of the rotor in a permanent magnet motor?

• It is diametrically magnetized.

• It is not a permanent magnet.

• It has 50 teeth.

• It is made of soft iron.

How many degrees does the rotor turn per step in a variable reluctance stepper motor?

• 90 degrees

• 60 degrees

• 30 degrees

• 45 degrees

What type of rotor does a variable reluctance stepper motor use?

• Permanent magnet rotor

• Diametrically magnetized rotor

• Soft iron ferromagnetic rotor

• Hybrid rotor

What is the main advantage of a hybrid stepper motor?

• It has a fixed step angle.

• It uses fewer coils.

• It combines features of two types of motors.

• It has a simple design.

In a complex hybrid stepper motor, what is the step angle achieved?

• 15 degrees

• 1.8 degrees

• 30 degrees

• 90 degrees