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You are aware that a specific kind of direct current motor—the stepper motor—transforms electrical pulses into shaft motion in a stepwise fashion. The stator is what actually turns the motor's permanent magnet rotor on and off, setting it apart from other DC motors. A standard DC motor can be used to describe the stator's architecture. The sole distinction is that these motors use stators with mechanical teeth. Once the microcontroller-generated pulses have been transmitted to the stator, these teeth will align with the rotor's teeth.
The microcontroller's pulse sequence causes the motor shaft to spin in defined stages. This motor's speed is controlled by a specific number of pulses, and a specific quantity of pulses is required to complete one round. Raising the input pulse frequency can increase the motor shaft's rotation speed.
The electric stepper motors last a long time because, as we can see from their structure, this bearing is the only part of the moving parts that experience friction. But motor use is important once more. We can't predict how long a motor will last just by looking at it. The motor's lifespan is affected by how vigorously it is used.
Advantages of Stepper Motor
Stepper Motor Holding Torque
The holding torque is a crucial metric for every motor. Ideally, it would be at the very top. When the motor windings are energized, holding torque is the amount of force that the motor can withstand before returning to its initial position, regardless of how much force is given to the shaft.
The motor's stand stall torque is another name for it. The electric stepper motor also has a feature that maintains rotor motion even when no current is flowing through the winding; this feature is known as the detent torque.
The Expenses Involved in Stepper Motor Maintenance
Electric stepper motors are unique among motors in that they do not require brushes, which means that they will not drive up your maintenance costs. You can skip changing the brush as often with these motors. It follows that this engine type requires little maintenance.
Very Consistent Results
We already established that the electric stepper motor's built-in capabilities enable it to precisely return to the same position upon command, providing exceptional repeatability.
Since high-quality stepper motor are accurate to within three to five per cent of a step and this inaccuracy does not accumulate from one step to the next, steppers allow for repeatable and accurate positioning and movement.
The Stepper Motor's Repeatability
This is a top feature of the electric stepper motor. After completing a complete detour, the stepper motor can return to its initial location. This quality makes these motors ideal for uses that demand pinpoint accuracy in speed measurement.
Superb Low-Speed Torque
At low speeds, stepper motors generate a great deal of torque. Because of this, they are better suited for uses requiring precise control over this torque.
Flexibility
stepper motor are designed to produce a continuous holding torque even when the motor is not operating, which allows them to be used in a wide range of applications.
Stepper Motors Are Convenient
Because it does not need positional or torque feedback, the Stepper Motor is typically utilized in an Open Loop System, which makes it easier and cheaper to regulate. A position transducer can be found inside the electric stepper motor.
Usually ranging from fifty to one hundred, stepper motors feature a plethora of poles, or magnetic pairings of north and south, created by a permanent magnet or an electric current. The more poles a stepper motor has, the more precisely it can move between each one because each one serves as a natural stop for the motor shaft. A stepper's inherent stopping points make it suitable for usage in situations when position feedback is not required.
Safe from Overload
Overload protection is essentially built into the stepper motor. While mechanical stress cannot destroy the motor, loads above its design limits may cause positional loss, which in turn affects accuracy and repeatability. electric stepper motors are the superior choice for applications involving a steady load.
Angle of Rotation
The fact that the Stepper Motor's rotational angle is directly proportional to the input pulse is an additional benefit. Sending the right number of pulse commands is all it takes to move to an exact location, as we learned in the last lesson about what an electric stepper motor is and how it works.
Based on what we learned in that lesson, stepper motors can feature rotor teeth ranging from 200 to 400, meaning that the motor shaft can make 200 to 400 complete steps every revolution.
We can use some basic mathematics to find the resolution of rotation. Since one complete rotation is equal to a circle, or 360 degrees, and a stepper motor has 200 incremental steps, we may divide 360 by 200.
When 400 steps are divided into 360 degrees, the result is 0.9 degrees of full-step angle rotation, which is equivalent to 1.8 degrees. The controller driver can generate one digital pulse for every step of rotation.
After all these advantages, if you' re interested in buying stepper motors, Smooth Motors is the best choice. Contact us for more information.
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