Servo motor refers to an engine that controls the operation of mechanical components in a servo system, and is an indirect variable speed device that supplements the motor.
Servo motor can control speed and position accuracy very accurately, and can convert voltage signals into torque and speed to drive control objects. The rotor speed of a servo motor is controlled by input signals and can react quickly. It is used as an actuator in automatic control systems and has the characteristics of small electromechanical time constant and high linearity. It can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. So, how to choose a suitable servo motor?
1. Rated power
It determines the amount of energy that the motor can continuously output. Taking CNC machine tools as an example, during high-intensity metal cutting, the motor needs to provide sufficient power to drive the tool to rotate at high speed and cut the metal. If the power selection is too small, the motor may overload and heat up, which not only affects the machining accuracy but may even damage the motor. On the contrary, excessive power can result in resource waste and increased costs.
2. Rated speed
In high-speed sorting equipment on automated production lines, motors are required to quickly drive the conveyor to operate and accurately sort items to different areas. At this point, the rated speed of the motor must match the speed requirements of the production line in order to ensure an efficient production rhythm. If the speed is too low, it cannot meet the production efficiency; Excessive rotational speed may exceed the mechanical capacity of the equipment and cause equipment failure.
3. Torque characteristics
For equipment such as cranes that require lifting heavy objects, the motor must have sufficient starting torque and stable operating torque to smoothly lift and move the heavy objects. If the starting torque is insufficient, the heavy object may not be able to be lifted; Unstable operating torque can cause heavy objects to sway in the air, posing a safety hazard.
4. Controlling precision parameters is equally crucial
In the process of electronic chip manufacturing, the servo motor of the lithography machine needs to accurately control the movement of the worktable. Its position accuracy must reach the nanometer level, and the speed accuracy and torque accuracy must also be extremely high to ensure that the circuit patterns on the chip are accurately etched. Any small deviation may lead to chip scrap.
5. The inertia matching of the motor
The joint movements of industrial robots are frequent and fast. If the inertia of the motor does not match the inertia of the load, it will affect the response speed and motion accuracy of the robot. When the inertia of the motor is too small to drive the load to move quickly and accurately; Excessive inertia can cause the motor to react slowly and make it difficult to implement complex motion commands.
In short, precise grasp of various parameters when selecting servo motors is the key to stable and efficient operation of the equipment. Different application scenarios have different focuses and requirements for these parameters. We must have a deep understanding of the working characteristics and requirements of the equipment, comprehensively consider various parameters, and weigh the pros and cons. Only in this way can the most suitable servo motor be selected to maximize its performance in its respective position.
As a professional servo motor supplier, Shenzhen Zhongling Technology Co., Ltd has rich experience and a professional technical team, committed to providing customers with high-quality products and solutions. We not only provide high-quality products, but also offer technical support and after-sales service to ensure that customers can have a better user experience. We will always provide support and guidance in your servo motor application.
Post time: May-13-2025