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Electric servo system is one of the core control systems in the field of modern industrial automation. It achieves high-precision and high response motion control through electrical means and is widely used in machine tools, robots, printing equipment, packaging machinery and other fields. The following is a detailed analysis of the electrical servo system:
System composition
The electrical servo system mainly consists of three parts: servo driver, servo motor, and encoder (or sensor):
Servo driver: As the "brain" of the system, it is responsible for receiving control commands (such as position, speed, torque commands) and adjusting the output in real time based on feedback signals to drive the servo motor to operate. The driver integrates a power amplification unit, a control algorithm unit, and a communication interface unit internally, achieving high-precision control through complex control algorithms such as PID control.
Servo motor: an actuator that converts electrical energy into mechanical energy to drive load movement. According to the type of motor, it can be divided into DC servo motor and AC servo motor. Among them, AC servo motor (especially permanent magnet synchronous motor) has become the mainstream choice due to its high efficiency, fast response, and simple maintenance.
Encoder/Sensor: Feedback device that monitors physical quantities such as the position, speed, or torque of the motor in real time and feeds back the signal to the driver. Encoder is a key component in servo system, and its accuracy directly affects the control accuracy of the system.
Working principle
The electrical servo system adopts a closed-loop control method, and its working principle can be summarized as follows:
Command input: The control system (such as PLC, CNC) sends target commands (position, speed, or torque) to the servo drive.
Drive control: The driver calculates the output voltage or current through control algorithms based on instructions and feedback signals, and drives the servo motor to operate.
Feedback regulation: The encoder monitors the actual position, speed, or torque of the motor in real time and feeds back the signal to the driver. The driver compares the feedback value with the target value, calculates the deviation, and adjusts the output until the deviation approaches zero.
Technical Advantages
High precision: Through closed-loop control, the system can achieve positioning accuracy at the micrometer or even nanometer level.
High dynamic response: The system has a fast response speed and can adapt to high-speed and high acceleration motion requirements.
High stability: Through feedback mechanism, the system can automatically correct errors and resist external interference.
Multifunctionality: Supports multiple control modes such as position, speed, torque, etc., to meet different application requirements.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2004
Total Annual:
10000000-15000000
Employee Number:
60~100
Ecer Certification：
Verified Supplier
GuangDong Zhufeng Electric Co.,LTD established in 2004, is a national high-tech and energy save enterprise with approval by National Development and Reform Commission. Focusing on the development and production and sale of products of “energy saving and control speed and variable speed” ... GuangDong Zhufeng Electric Co.,LTD established in 2004, is a national high-tech and energy save enterprise with approval by National Development and Reform Commission. Focusing on the development and production and sale of products of “energy saving and control speed and variable speed” ...
