Types of Stepper Motor and Their Significances

A stepper motor is definitely an electromechanical device that induces mechanical movements by converting electrical pulses. It's driven by digital pulses rather of constantly applied voltage, and it could step or rotate in fixed angular increments. Stepper motors are usually utilized in applications that need position manage. They're assumed to adhere to digital directions when utilized inside a stepper motor method style. They are classified as open-loop systems due to their lack of feedback to keep control of the position. Stepper motors can be classified into three basic types:

Variable reluctance stepper motor:

The VR stepper motor is characterized by the fact that there is no permanent magnet either on the rotor or the stator. The construction of a 3-phase VR stepper motor is shown in figure.

The stator is produced up of silicon steel stamping s with inward projected even or odd quantity of poles or teeth (generally the amount of poles of stator is definitely an even quantity). Every and each stator pole carries a field coil or thrilling coil. In case of even quantity of poles the thrilling coils of opposite poles are connected in series. The two coils are connected such that their MMF get added. The mixture of two coils is recognized as phase winding.

The rotor is also made up of silicon steel stamping s with outward projected poles and it does not have any electrical winding. The number rotor poles  should not be equal to the number of stator poles to have self starting capability and bi-directional rotation. The width of the rotor teeth should be equal to the width of stator teeth.

Permanent magnet stepper motor:

Permanent Magnet (PM) motors use permanent magnet rotors and are commanded by electrical pulses. They are widely used in printers, copies, and scanners, among other applications. They are also used to operate valves in household water and gas systems as well as drive actuators in automotive applications.

One of the main benefits of the PM stepper motor is that, in addition to being electronically commutated like a brushless DC motor or any other type of stepper motor, the PM stepper motor requires no “teeth” as are typically found in the variable reluctance (VR) stepper motor. This makes the permanent magnet stepper an extremely popular choice for many motor applications.

Hybrid Stepper motors:

Hybrid stepper motors provide excellent performance in areas of torque, speed, and step resolution. Typically, step angles for a hybrid stepper motor range from 200 to 400 steps per revolution. This type of motor provides a combination of the best features available on both the PM and VR types of stepper motors. Hybrid stepper motors enhance the performance in terms of torque, speed, and step resolution, so they are useful in applications that require high stepping speeds for operation. They come in step angles designed at 0.9 degrees, 1.8 degrees (commonly used), 3.6 degrees, and 4.5 degrees.

We have excellent teams in manufacturing and researching motors., and with rich experience in this field, we can solve the actual using problems for customers. Our products are highly commended by customers because of its easy operation, long using life, stable performance, low failure rate and high technical content.

About Fasttobuy:

Our products are widely applied in printing equipment, engraving machine textile machine, computer external application equipment, medical instruments, stage light equipment, robot, NC machine tool and other automatic controlling system. Our main products include NEMA8, NEMA11, MENA14, MENA15, NEMA17, NEMA23, NEMA24, NEMA34 and NEMA43 series hybrid stepper motor.