Servo motor, also known as a servo electric motor, is mainly used to drive control objects by converting received electrical signals into angular displacement or angular velocity output on the motor shaft. Compared to regular motors, servo motors have a fast response speed, making them widely used in industries that require high process accuracy, processing efficiency, and working reliability, such as the mechanical industry, printing industry, medical industry, and food industry. Let's learn about the functions and application industries of servo motors.
1. What is the function of a servo motor?
A servo motor is a type of electric motor that plays a crucial role in the composition of automated equipment. Its functions include:
- Converting voltage signals into torque and speed to drive control objects.
- Providing precise control over speed and positional accuracy.
- The motor rotor speed is controlled by input signals and can respond quickly.
- It is used as an actuator in automatic control systems and exhibits characteristics such as small electromechanical time constant, high linearity, and low starting voltage.
- It converts received electrical signals into angular displacement or angular velocity output on the motor shaft.
Compared to regular motors, servo motors have a fast response speed. In applications requiring rapid point-to-point positioning, servo control technology can provide high torque output, resulting in excellent dynamic response that surpasses regular motors.
2. Which industries primarily use servo motors?
Servo motors, with their high precision in operation and accurate torque output, are primarily used in equipment that demands high process accuracy, processing efficiency, and working reliability. Some examples include:
- Mechanical industry: machining centers, CNC punch presses, bending machines, shearing machines, PLC program controllers, various automotive testing equipment, assembly equipment, and welding equipment.
- Printing industry: plate-making machines, printing presses, offset printers, rotary machines, laser plotters, sample-making equipment, fully automatic plate-cutting machines, inkjet printers, folding machines, paper cutters, wire stitching machines, and fully automatic corrugated board (box) production lines.
- Medical industry: monitors, ultrasound machines, CT control boxes, electrocardiographs (electroencephalographs), X-ray machines, slicers, hemodialysis machines, temperature controllers, etc.
- Food industry: sterilizers, homogenizers, labeling machines, canning machines, flow control instruments, sealing machines, packaging machines, coffee machines, etc.
- Rubber and tire industry: steel cord production lines, inner liner extrusion production lines, steel wire calenders, twin-screw extruders, steel cord cutting machines, heavy-duty mixers, radial tire steel wire machines, etc.
- Elevator industry: door control and floor control systems for various types of elevators.
3. Are servo motors reliable?
Servo motors are generally considered highly reliable. They offer high precision and closed-loop control of position, speed, and torque. They do not experience step-out issues, have good high-speed performance, and exhibit strong overload capacity. They have few disadvantages, although they may not be fully waterproof or oil-resistant, making them less convenient for use in environments prone to water or oil contamination.
