Introduction: This article mainly introduces the working principle of DC servo motors . Those interested should definitely check it out – it's very educational!
1. Working Principle of DC Servo Motor - Introduction
DC servo motors specifically refer to brushed DC servo motors. These motors are expensive and complex in structure, have high starting torque, a wide speed range, and are easy to control. However, they require maintenance, which can be inconvenient. They also generate electromagnetic interference and have environmental requirements. Therefore, they are suitable for cost-sensitive general industrial and civilian applications.
2. Working principle and composition of DC servo motors
A DC servo motor comprises a stator, a rotor core, a motor shaft, a servo motor winding commutator, servo motor windings, a tachometer motor winding, and a tachometer motor commutator. The rotor core is constructed by stacking and fixing silicon steel laminations onto the motor shaft. It is used in actuator drives in various digital control systems and in power drives requiring precise control of constant speed or precise control of speed variation curves.
3. Working principle of DC servo motor
Servo systems primarily rely on pulses for positioning. Essentially, a servo motor receives one pulse and rotates by the angle corresponding to that pulse, thus achieving displacement. Because the servo motor itself has the function of emitting pulses, it emits a corresponding number of pulses for each rotation angle. This creates a feedback loop with the pulses received by the servo motor, or a closed loop. In this way, the system knows how many pulses were sent to the servo motor and how many were received, enabling precise control of the motor's rotation and achieving accurate positioning down to 0.001mm.
