AC servo motor is a device that converts electrical energy into mechanical energy, mainly composed of stator winding (or electromagnet winding) and rotor. This type of motor works by utilizing the phenomenon of the energized coil rotating under force in a magnetic field, and is mainly divided into two types: AC asynchronous servo motors and AC synchronous servo motors. The following is a detailed introduction about AC servo motors:
1、 Basic composition
AC servo motors are mainly composed of stator, rotor, and driver. Two phase windings with a spatial difference of 90 ° in electrical angle are placed in the stator, one phase is the excitation winding and the other phase is the control winding. The rotor is mostly a permanent magnet structure. The driver adjusts the power supply frequency and voltage according to the control signal to achieve precise control of the motor.
2、 Working principle
The working principle of communication servo motor is based on phase shift and frequency change to control the steering and speed of the transmission shaft. Specifically, the driver changes the motor speed by adjusting the power supply frequency, and achieves the forward and reverse rotation of the motor by changing the phase of the control signal. When the motor receives a pulse signal, it will rotate by the corresponding angle according to the frequency and phase of the signal, thereby achieving precise position control.
3、 Performance characteristics
High precision: AC servo motors have high control accuracy and can achieve small displacement and angle changes.
High stability: Through closed-loop control, the AC servo motor can suppress external interference and maintain a stable operating state.
Wide speed range: AC servo motors can be smoothly adjusted within a wide speed range.
High dynamic response: Due to the driver's ability to quickly adjust power supply parameters, AC servo motors have a fast dynamic response speed.
4、 Application Fields
AC servo motors are widely used in fields such as industrial automation, aerospace, transportation, electronic equipment, and military equipment. For example, in the field of industrial automation, AC servo motors can be used in equipment such as CNC machine tools, conveyor belts, elevators, etc; In the field of transportation, it is used for the drive system of electric vehicles, drones and other equipment.
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