Động cơ Servo hoạt động như thế nào? | Học Nghề Kỹ Sư Điện & Điện Tử

#ElectricalEngineeringTraining How Do Servo Motors Work? | Electrical & Electronics Engineering Training Servo motors are designed for closed-loop feedback systems. The motor's output signal is connected to a control circuit. As the motor rotates, its speed and position are fed back to this control circuit. If any reason prevents the motor's rotation, the feedback mechanism detects that the output signal has not reached the desired position. The control circuit continues to correct the deviation until the motor reaches the precise point. Servo motors controlled by radio communication are called RC (radio-controlled) servo motors. In practice, the servo motor itself is not controlled by radio; it is only connected to a radio receiver on an airplane or car. The servo motor receives signals from this receiver. A servo motor is a closed-loop motor that uses position feedback to control its movement and final position. The input for its control is a signal (analog or digital) representing the commanded position for the output shaft. The motor is coupled with some type of position encoder to provide position and speed feedback. In the simplest case, only the position is measured. The measured position of the output is compared to the command position, an external input to the controller. If the output position differs from the requirement, an error signal is generated which then causes the motor to rotate in either direction, as needed to bring the output shaft to the appropriate position. When the position is reached, the error signal drops to 0 and the motor stops. The simplest servo motors use a position sensor via a potentiometer and control the bang-bang of their motor; the motor always rotates at maximum speed (or is stopped). This type of servo motor is not widely used in industrial motion control, but it forms the basis of the simple and inexpensive servo motors used for radio-controlled models. More sophisticated servo motors use optical rotary encoders to measure the speed of the output shaft and a variable speed drive to control the motor speed. Both of these improvements, often combined with a PID control algorithm, allow the servo motor to be brought to its command position faster and more accurately, with less overshoot. ********************************** See more videos from the Electrical & Electronics Engineering Vocational Training channel at the links below: Basic Electronics:    • Điện Tử Cơ Bản   Electrical & Electronics:    • Điện & Điện Tử   Electronic Components:    • Linh Kiện Điện Tử   How It Works:    • Hoạt Động Như Thế Nào?   ********************************** Donate a cup of coffee to support the channel in making more good videos! More: Support via MoMo e-wallet to phone number: 093 878 4520 Asia Commercial Bank (ACB) account - Ho Chi Minh City branch - Account holder: Nguyen Thanh Dung - Account number: 7382779 PayPal: https://www.paypal.com/paypalme2/TriT...