Difference between Stepper Motor vs Servo Motor

Hello, friends welcome to the new post. In this post, we will have to discuss the Difference between Stepper Motor and Servo Motor. A motor is a device used to transform electrical energy into mechanical energy. The sources of electrical energy linked to the motor are ac system, battery, and solar can be. There are different types of motors like ac motors, dc motors, and synchronous motors. Similarly, servo and stepper are types of motors.

If we do a comparison between these motors then we will come to know that there is the main difference between them is their structure and operation. Such applications are where there is no use or less use of stepper motor where a servo motor is employed. the speed offered by the stepper motor is less than the servo motor. So let’s get started with the Difference between Stepper Motor and Servo Motor.

Difference between Stepper Motor and Servo Motor

What is Stepper Motor

• The structure of the stepper motor is that its consists of a rotor that is created through a permanent magnet and a stator that carries windings.
• If we connect the supply to the stator then the flux will generate that will make the link to the rotor and due to that force is applied at the rotor.

• Stepper motor offered larger steps up to fifty or more than fifty according to requirements.
• In the stepper motor every pole gets energized in order so the motor operates in sequence.
• The stepper motor offered accurate behavior at a reasonable cost like less speed and good accuracy.

what is Servo Motor

• The structure of the servo motor is like the stepper motor in that it also consists of a rotor created through a permanent magnet and a stator having windings.
• The flux generated at the stator makes a link to the rotor and applies the force of rotation.
• this motor has a small number of pols than the stepper motor.

• The structure of the servo motor is more sophisticated than the stepper motor. Its operating speed is larger than a stepper motor.
• Due to the large speed, it is preferred to use such an application where high torque is needed.

How Do Stepper Motors Work?

• It works on through the rotation of the toothed rotor in small and accurate steps.  The rotor is magnetized through a sequence of digital pulses that are produced through driver circuitry.
• The position of the rotor is tracked through an encoder that provides feedback to the control system. The control system can adjust the pulse sequence to get the required position and speed

How Do Servo Motors Work?

• This motor is operated through the use of a control system to monitor the position of the motor and speed with adjusted voltage and current provided to winding of more motor accordingly.
• The position of motor is tracked through an encoder that provides feedback to the control system. The control system can adjust voltage and current to get the required position and speed

Comparison between Stepper and Servo Motor

• The common use of steppe motors is in medical instruments three-dimensional printing weldings and servo motors employed in cameras, and controlling devices.
• The Stepper motor generates high torque than the servo motor.
• The Stepper motor is less efficient and the servo motor is highly efficient

• steppe motor has poles valued from fifty to one fifty servos have four to twelve.
• A Stepper motor produces a high value of heat than a servo.
• The working speed of the servo motor is large than others.
• A Stepper motor is less costly than a servo.
• stepper motor works in a different number of steps while servo motors operate continuously.

Stepper Motor vs Servo Motor

Advantages of Stepper Motors

• Precise positioning and control
• Low cost
• Easy to control
• High torque at low speeds
• Do not require feedback sensors

Disadvantages of Stepper Motors

• Low efficiency
• Can lose steps if overloaded
• Limited speed range
• Vibration and noise

Advantages of Servo Motors

• High accuracy and precision
• High torque at high speeds
• Wide speed range
• Low vibration and noise
• Can handle overloading without losing steps

Disadvantages of Servo Motors

• High cost
• Require feedback sensors
• Complex control system
• Require tuning for optimal performance

Stepper Motor vs Servo Motor: Which is Better?

Positioning and Control

• A stepper motor can be a better option if precise positioning and control are your main concerns. Without the need for feedback sensors, stepper motors offer fine control over the rotor’s position and speed.
• They are therefore perfect for robotics, automation, and CNC machine applications that call for precise and repeatable motions.
• A servo motor will be a good choice if you need high accuracy and precision at high speed. Servo motors can change the voltage and current to reach the required position and speed by using feedback sensors to monitor the motor’s position and speed. They are therefore perfect for robotics and industrial automation applications that need fast and precise motions.

Cost and Complexity

• A stepper motor can be a better option if affordability and ease of use are your primary goals.
• Generally speaking, stepper motors are less costly and simpler to use than servo motors. They can lower the total cost of the motion control system since they don’t need a sophisticated control system or feedback sensors.
• Furthermore, stepper motors don’t need to be tuned for best performance, which can reduce setup time and effort.
• A servo motor, however, can be worth the extra expense and complexity if you need motions that are fast and precise. To attain great accuracy and precision at high speeds, servo motors need feedback sensors and a more complicated control system.
• . This may be required for some applications, but it can raise the motion control system’s total cost and complexity.

Torque and Speed

• A stepper motor can be a better option if you need great torque at low speeds. Stepper motors are perfect for applications that need for precise and sluggish motions, including robots and CNC machines, since they have strong torque at low speeds. Stepper motors might lose steps if they are overworked and have a restricted speed range.
• Servo is a fine option when you need high torque for high speed Due to its high torque at high speeds, servo motors are perfect for robotics and industrial automation applications that need for fast, precise motions. The overall dependability of the motion control system can be increased by the fact that servo motors can endure overloading without losing steps.

 

That is a detailed post about the Difference between Stepper Motor and Servo Motor if you have any further queries ask in the comments. Thanks for reading have a nice day. See you in the next post.