Working Principle of AC Servo Motor
Working principle of AC servo motor
When an AC servo motor works, a number of parts and procedures come together to provide precise motion control :
- Stator and Rotor: The two most important parts of the AC servo motor are the rotor which is the revolving part and other is the stator which is the stationary part. The AC passing through the wire coils inside the stator creates a rotating magnetic field.
- Feedback System: Servo motors, as compared to AC motors, have a feedback mechanism that makes use of encoders or resolvers. These devices give data regarding the position, speed, and torque of the motor.
- Control System: A control system compares the parameters associated with motion , like position, speed, etc., with the feedback signals it gets from the motor. In response to this comparison, the control system generates a corrective signal, which changes how the motor operates.
- Power Amplifier: By amplifying the signal from the control system, a power amplifier increases the signal strength required to drive the motor.
- Motion: The motor windings produce a magnetic field that interacts with the stator’s magnetic field after receiving the amplified signal. The rotor rotates as a result of this interaction, producing a motion.
- Closed-loop Operation: In this process, the motor’s performance is evaluated and that information is sent back to the control system. Because of its closed-loop operation, the motor can precisely and accurately alter its operation in real-time to achieve the desired motion.
Transfer Function of AC Servo motor
The relationship between the input command signal and the output motion response is displayed by the transfer function of an AC servo motor. Usually, it takes into account factors such as motor dynamics, control system properties, and load dynamics. Briefly, the transfer function describes how the motor responds to changes in the input signal, which aids engineers in analyzing and designing control systems for optimal performance and stability.
AC Servo Motor
In this article, we will be going through what are AC servo motors, We will start our article with the definitions of AC servo motors. We will see different types, then we will move to our Topic construction of AC servo motors, We will go through their working principle and transfer function. At last, we will conclude our Article with its Applications and Some FAQs.
Table of Content
- AC Servo Motor
- Construction
- Working Principle
- Speed Control Method
- Characteristics
- Advantages, Disadvantages and Applications
- Two Phase and Three Phase Servo Motor