The structure of the servo motor control system

There are many types of mechatronic servo control systems, but from the perspective of automatic control theory, servo control systems generally include five parts: controller, controlled object, execution link, detection link, and comparison link. 　　 1. Comparison link; 　　The comparison link is the link that compares the input command signal with the feedback signal of the system to obtain the deviation signal between the output and the input, which is usually implemented by a special circuit or computer. 　　 2. Controller; ``The controller is usually a computer or PID control circuit. Its main task is to transform the deviation signal output by the comparison element to control the actuator to act as required. 　　3. Implementation link; 　　The function of the execution link is to convert various forms of energy input into mechanical energy according to the requirements of the control signal, and drive the controlled object to work. The executive components in the mechatronics system generally refer to various motors or hydraulic, pneumatic servo mechanisms, etc. 　　 4. The accused object; 　　 The mechanical parameters include displacement, velocity, acceleration, force, and moment for the controlled object. 　　 5. Detection link; 　　The detection link refers to a device that can measure the output and convert it into the dimension required by the comparison link, which generally includes a sensor and a conversion circuit.