Servo positioning mainly depends on pulses. Basically, it can be understood that when the servo motor receives 1 pulse, it will rotate the angle corresponding to 1 pulse, thus realizing displacement. Because the servo motor itself has the function of emitting pulses, it will emit a corresponding number of pulses every time it rotates an angle, which echoes the pulses received by the servo motor, or it is called closed loop. The system will know how many pulses are sent to the servo motor and how many pulses are received back at the same time. In this way, the rotation of the motor can be controlled very accurately, so as to achieve accurate positioning, which can reach 0.005438+0 mm

Features:

1, mechanical characteristics When the input armature voltage Ua remains constant, the law of motor speed n changing with electromagnetic torque M is called the mechanical characteristics of DC motor.

2. Regulation characteristics The regulation characteristics of DC motor are called the law that the steady-state rotation speed n of the motor changes with the armature control voltage Ua under a certain electromagnetic torque m (or load torque).

3. Dynamic characteristics have a transition process from the original stable state to the new stable state, which is the dynamic characteristics of DC motor.