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As one of the basic components in industrial control systems, servo controllers are divided into dedicated industries such as large-scale measuring instruments, paper-making machinery, and plastic machinery. The core content of industrial control is the application field and working principle of the servo controller, which have attracted attention in the industry.

The application field of a servo controller involves the control of the working state of various electrical and mechanical devices. The main application scenarios in industry are: spinning machinery, steel enterprises, paper-making machinery, elevator control, light industry machinery, etc. The main function is to use the system sensor to collect relevant mechanical action information. The measured data is input into the controller to analyze and make a corresponding processing decision, and finally control the corresponding action of the servo motor.

In terms of structure, the servo controller is composed of a power amplifier, capacitor, rectifier, motor drive, and the input part is generally composed of a sensor interface. The technology is based on the closed-loop speed control of a brushless DC motor and a DC motor. In a closed-loop control process, an external feedback signal is introduced to control the output motor speed or torque. To ensure the feedback accuracy and safety, a controller with the appropriate battery is generally used in parallel.

The working principle of the servo controller mainly consists of the basic loop and advanced control loop. According to the difference in structure and mechanism, it can be divided into closed-loop speed and current control, open-loop speed control and switch control. The basic loop mode consists of speed control and position control, current control, torque control, and vibration control. The use of the advanced control loop extends its functions, such as impact resistance, vibration absorption, start and stop speed control, linear acceleration and deceleration, over-speed protection, offset resistance, etc.

In summary, the application field and working principle of the servo controller are closely related to the application scenarios of industrial control and the improvement of product performance. Its basic loop mode mainly includes speed and current control, torque control and vibration control. In addition, it also contains advanced control loops, which can provide various functions such as over-speed protection, offset resistance and vibration absorption.

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