What are the precautions for removing DC servo motor and AC servo motor?

A rotating electric machine whose input or output is direct current energy. Its analog speed regulation system generally consists of two closed loops, namely speed closed loop and current closed loop. In order to make them work in harmony with each other, two regulators are set in the system to adjust the speed and current respectively. The structure of double feedback closed loop adopts a nested structure of one ring and one ring, which is the so-called double closed loop speed regulation system. It has the advantages of fast dynamic response and strong anti-interference ability, so it is widely used. Usually, PI or PID circuits consist of analog operational amplifiers. Signal conditioning is mainly to filter and amplify the feedback signal. Considering the mathematical model of DC motor and the dynamic transfer function relationship of analog speed regulation system, it is very troublesome to change the circuit parameters frequently to obtain the expected dynamic performance index in the debugging process of analog speed regulation system because the motor parameters or the mechanical characteristics of load are quite different from the theoretical values. If the voltage stabilizing circuit is composed of programmable analog devices, system parameters such as gain, bandwidth and even circuit structure can be modified by software, which is very convenient to debug.

DC servo motors are divided into brush motors and brushless motors. Brushed motors have the advantages of low cost, simple structure, large starting torque, wide speed range, easy control and maintenance, but they are easy to maintain (replacing carbon brushes), will produce electromagnetic interference and have requirements for the environment. Therefore, it can be used in common industrial and civil occasions which are sensitive to cost. Brushless motor has the advantages of small volume, light weight, large output, fast response, fast speed, small inertia, smooth rotation and stable torque. It is easy to realize intelligence, and its electronic commutation mode is flexible, which can be square wave commutation or sine wave commutation. The motor has the advantages of maintenance-free, no carbon brush loss, high efficiency, low working temperature, low noise, small electromagnetic radiation and long service life, and can be used in various environments.

DC servo motor can be used in spark machine, manipulator, precision machine tool and so on. At the same time, it can be equipped with a gearbox, which makes the mechanical equipment bring reliable accuracy and high torque.