AC servo system design guide and control method

AC Servo System Design Guide

The following are some guidelines for designing AC servo systems:

Choose the right motor type: There are different types of AC servo motors, such as induction motors, permanent magnet synchronous motors, etc. The right motor type should be selected according to the specific application scenario to ensure its performance and control effect.

Determine motor parameters: Motor parameters include rated speed, rated power, maximum torque, etc. Motor parameters should be reasonably selected according to application requirements and control system design requirements.

Choose the right encoder: The encoder is a necessary component for servo control. Common encoders include absolute encoders and incremental encoders. The appropriate encoder type and resolution should be selected according to the specific application scenario.

Choose a suitable servo drive: The servo drive is the core component for realizing servo control. The appropriate servo drive should be selected according to parameters such as motor type, power, and speed.

Choose a suitable controller: The controller is the brain of the servo system. The appropriate controller should be selected based on factors such as system requirements, control algorithms and implementation methods.

Perform system debugging and optimization: After the design is completed, system debugging and optimization are required, including control algorithm adjustment, feedback loop calibration and parameter optimization.

Safety and reliability: In the design of servo systems, attention should be paid to safety and reliability. For example, safety measures such as overload protection and overheating protection should be adopted, and the reliability and stability of system components should be ensured.

In short, when designing an AC servo system, appropriate components such as motors, encoders, servo drivers and controllers should be selected according to specific application requirements and control requirements, and system debugging and optimization should be performed to ensure system performance and control effects. At the same time, attention should be paid to safety and reliability to ensure that the system works stably and safely.

Control Method of AC Servo System

There are many control methods for AC servo systems. Here are some commonly used control methods:

Position control: Position control is a closed-loop control system that controls the motor's rotation angle by comparing the difference between the encoder feedback signal and the position command signal. Position control can achieve the positioning accuracy and motion control accuracy of the motor, and is suitable for applications that require positioning, such as printing, packaging, and handling.

Speed ​​control: Speed ​​control is a closed-loop control system that controls the motor speed by comparing the difference between the encoder feedback signal and the speed command signal. Speed ​​control can achieve motor speed control and regulation, and is suitable for applications that require motor speed control, such as machine tools, manufacturing equipment, etc.

Current control: Current control is a closed-loop control system that controls the output current of the motor by comparing the difference between the motor current feedback signal and the current command signal. Current control can achieve stable and accurate output power of the motor, and is suitable for applications that require control of motor output power, such as stirring, vibration, etc.

Force control: Force control is a closed-loop control system that controls the output force of the servo system by comparing the weight of the object being forced or the difference between the pressure feedback signal and the force command signal. Force control can achieve precise control of the object being forced and is suitable for applications that require control of the object being forced, such as assembly, clamping, etc.

Torque control: Torque control is a closed-loop control system that controls the motor's output torque by comparing the difference between the motor's output torque feedback signal and the torque command signal. Torque control can achieve precise control of the motor's output torque and is suitable for applications that require control of the motor's output torque, such as lifting, traction, etc.

In summary, there are many control methods for AC servo systems, and different control methods are suitable for different applications and control requirements. In practical applications, it is necessary to select a suitable control method based on specific control requirements and system characteristics.