Servo motors have been around for a long time and have many advantages, so they are used in many applications. Although servo motors have many advantages, they also have some disadvantages. The following will introduce you to the advantages and disadvantages of servo motors to help you better understand servo motors.
A servomotor is a rotary actuator or linear actuator that allows for precise control of angular or linear position, velocity and acceleration. There are two types of servo motors, they are AC and DC. AC servo motors, such as Fanuc AC servo motor, can accept higher currents and are often used in industrial machinery. DC servo motors are usually suitable for smaller applications. In addition, DC servo motors price are also lower than AC motors. Servo systems are used in radio-controlled aircraft to locate elevators, rudders, robot walking or operating fixtures and other control surfaces. The servo motor is small in size, has a built-in control circuit, and has a power equivalent to its size. In the food service and pharmaceutical fields, these tools are designed to be used in harsher environments where the possibility of corrosion is high due to repeated cleaning under high pressure and high temperature to maintain strict hygiene standards. Servo is also used in online manufacturing, where highly repetitive but precise work is required.
Servo motors run more smoothly than stepper motors, and servo motors can provide 2-3 times the speed of typical stepper motors, the torque of the servo motor remains constant, and the performance is also higher than that of the stepper motor.
Servo motors have better accuracy. Servo motors use encoders to provide higher accuracy and resolution through closed-loop control
The servo motor can provide a high level of torque at high speed, which is impossible for a stepper moto
The servo motor can work under AC or DC servo drive, and will not be affected by vibration or resonance problems
The noise generated by the servo motor is very small, which means that the servo motor is quiet during high-speed operation.
The efficiency of the servo motor is very high, even 90% efficiency at light load.
Servo motors are usually more expensive than stepper motors. In addition to the cost of the encoder and the cost of the gearbox, the entire servo system will become more expensive. In addition, because servo motors have higher requirements for encoders and gearboxes, this means that encoders and gearboxes are more mechanically complex, which leads to more frequent maintenance and higher costs.
It is more complicated to configure the servo motor. The tuning of the servo motor is usually very difficult and it takes a lot of time to modify and adjust the signal output by the servo drive to the motor. Studies have shown that adjusting the servo drive may take up to 6 hours or longer to complete.
Servo motors are very complex, and complex controllers require encoders and electronic support.
The peak torque is limited to 1% duty cycle, so the servo motor may be damaged due to continuous overload.
The above is an introduction to the advantages and disadvantages of the servo motor. Any kind of motor has its advantages and disadvantages. Therefore, when choosing a motor, it is necessary to select a suitable motor based on its advantages and disadvantages. If you are very interested in servo motors and want to buy a high quality servo motor , you can consider consulting Ouke, a professional supplier with more than 15 years of experience in the automation industry and provides Fanuc servo motor, Siemens servo drive, Mitsubishi servo motor, Fanuc servo drive, Fanuc servo motor encoder, etc.
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