Servo systems are the actuators in automated production; various robotic arms rely on servo systems to perform their work. Compared to other motors, the biggest advantage of servo systems is their high control precision, thanks to their encoder structure, which enables closed-loop control. As the core of a servo system, the choice of motion motor is crucial. Currently, the main types of servo motors are AC and DC, with AC motors offering better overall performance and greater development prospects. So, what are the characteristics of AC servo motors? Let's take a brief look.
First, AC servo motors have relatively large starting torque and high control sensitivity. Sensitivity is a primary concern in the initial design of AC servo motors, meaning high control precision, as mentioned above. Furthermore, they possess significant starting torque, and even as the speed increases, the torque does not drop drastically.
2. AC servo motors do not exhibit self-rotation phenomenon. When the control voltage is lost, the AC servo motor will stop moving immediately, rather than continuing to rotate due to inertia.
Third, AC servo motors are mostly brushless, making maintenance easier. The vast majority of AC servo motors do not have internal brushes, thus eliminating the problem of brush wear. Furthermore, brush wear generates waste, which, if accumulated inside the motor, can adversely affect its normal operation, requiring regular cleaning. Therefore, AC servo motors are far superior to DC servo motors in terms of maintenance.
Of course, the choice between AC servo, DC servo, and stepper motor in actual work depends on your specific needs. If the control precision requirements are not high, a stepper motor can be considered. If high-precision control is required, a servo system is more suitable.
