With the rapid development of the motor industry, the use of servo motors is getting hotter and hotter, many fields have used servo motors, favored by the majority of customers.

Servo motor common can be divided into AC servo motor and DC servo motor, many friends asked, what is the difference between the two, why there is a distinction between DC and AC, the two advantages, principles, applications are the same? Vacuz to give you an introduction to the specific situation! Hope it can help you!

Motor Rotor

AC servo motor and DC servo motor advantages and working principle distinction.

DC servo motors are divided into brushed motors and brushless motors. Brush motor cost is relatively low, the structure is relatively simple, the starting torque is large, easy to control and maintain, but there are certain requirements for the environment. Brushless motors are small in size, light in weight, fast in response, small inertia, smooth rotation and stable torque.

DC servo motor is easy to realize intelligence, its electronic commutation is flexible, it can square wave commutation or sine wave commutation, the motor is maintenance-free, no carbon brush loss, high efficiency, low operating temperature, low noise, low electromagnetic radiation, long life, generally speaking, it can be used in a variety of environments, adaptable.

AC servo motor has good speed regulation characteristics, can realize smooth control in the whole speed regulation range, almost no oscillation, high efficiency up to 90%, low heat generation, constant torque, low inertia, low noise, no brush wear, and suitable for dust-free environment in the rated working area.

The disadvantage of AC servo motor is that the control is more complicated, need to adjust the drive parameters on site to determine the PID parameters, and need more connections to support its operation.

Application of AC servo motor and DC servo motor.

Due to the advantages of simple structure, reliable operation and easy maintenance, DC servo motors are widely used in various fields of DC motors, such as medical equipment, instrumentation, chemicals, textiles, and household appliances.
AC servo drive can be used for all the position, speed, torque control accuracy requirements of the higher occasions. Such as machine tools, printing equipment, packaging equipment, textile equipment, laser processing equipment, robotics, electronic products, pharmaceuticals, financial machinery, automated production lines, etc..

Generally speaking, whether DC servo motor or AC servo motor, their characteristics determine different application fields. In the actual application scenario, they complement each other and provide me with great help!

Pump motor

To sum up, there are still many differences between AC servo motors and DC servo motors, and this knowledge can help us choose the right motor to ensure that the needs of the work are met!

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