Servo Motor Working Principle and Application

In a motor where precision and control are paramount, the servo motor takes center stage. But What is the servo motor working principle and application? This blog post will delve into the working principles of servo motors and explore their wide range of applications across industries from robotics to consumer electronics.

Servo Motor Principles

The working principle of the servo motor is mainly based on a closed-loop control system, which can accurately control the position, speed and torque of the motor.

When the servo system receives a control signal, the servo controller processes and analyzes the signal, and then sends the result to the servo motor. After the servo motor receives the signal, it converts the electrical signal into mechanical motion through the internal control algorithm and drive device.

At the same time, every time the servo motor rotates by an angle, it will send out a corresponding number of pulses, forming a closed-loop system.

The Servo Motor’s Key Components

Servo motors comprise three key components: the motor stator rotor, an encoder for feedback, and a controller. The motor is responsible for generating mechanical motion control, while the encoder provides data on the motor’s current position. The controller interprets this feedback and makes adjustments to maintain the desired state.

servo motor working principle and application

Types Of Servo-Electric Motors

Servo motors are mainly divided into two categories: DC motors and AC motors. Among them, DC servo motors can be divided into brushed and brushless motors. In addition, stepper servo motors and linear servo motors are also common servo motor types.

Applications Of Servo Motors

Robotics And Automation

Servo motors apply for high-precision industrial automation equipment. Such as robot manipulators and CNC machine tools, machining centers, printing equipment, and packaging machinery.

Rail Transportation

Servo motor is suitable for automobiles, airplanes, and ships.

Consumer Electronics

Servo motors apply for semiconductor equipment, LCD equipment, electronic component manufacturing equipment, etc.

Medical Devices

Servo motors are crucial in medical imaging systems and robotic surgical devices.

servo motor application

Custom Servo Motor Laminations From motorneo

We offer customized servo motor laminates, including brushed DC servo motor laminations, brushless DC servo motor laminations, or AC servo motor laminations. These iron cores apply for robots, CNC machine tools, and industrial machinery in the servo motor industry.

Motorneo also customizes linear motor cores, BLDC motor cores, permanent magnet motor cores, direct drive motor cores, DC motor cores, induction motor cores, universal motor cores, shade pole motor cores, and stepper motor cores.

We can customize the outside diameter, inside diameter, height, number of slots, and number of holes according to the special requirements of customers. Our stamping equipment enables high-speed mass production, laser cutting, and wire cutting for small-batch production and prototyping.

progressive stator rotor self-riveting Process


Servo motors play an indispensable role in modern industrial production. Their characteristics of precise control and high-efficiency movement make them widely used in various fields.

In the future, with the continuous development of science and technology, the application fields of servo motors will continue to expand, making greater contributions to the progress and development of human society.


How are servo motor laminations manufactured?

Servo motor laminations manufacturing through the use of a precision stamping process(such as compound stamping, progressive stamping, and rotary notching).

This involves feeding a continuous strip of electrical steel (often silicon steel) through a die set, where it is stamped and cut into laminations with precise shapes and dimensions. These laminations are then stacked and insulated to create the motor’s core.

What are some common troubleshooting tips for servo motors?

To troubleshoot servo motor issues, focus on preventing overheating, addressing position drift, and mitigating electrical noise. Regular cleaning, lubrication, and inspection also help maintain optimal performance.

What are the advantages of using a servo motor?

High Precision

Fast Response Time

High Torque-to-Inertia Ratio

Variable Speed and Torque

Closed-Loop Control

Energy Efficiency

Smooth Operation

Compatibility with Automation

Try to contact us for high-quality motor cores in China.