刚刚进了一把枪，质优价廉，高科技 brushless 哟：

A brushless DC electric motor (BLDC), also known as an electronically commutated motor, is a synchronous motor using a direct current (DC) electric power supply. It uses an electronic controller to switch DC currents to the motor windings producing magnetic fields which effectively rotate in space and which the permanent magnet rotor follows. The controller adjusts the phase and amplitude of the DC current pulses to control the speed and torque of the motor. This control system is an alternative to the mechanical commutator (brushes) used in many conventional electric motors.

The construction of a brushless motor system is typically similar to a permanent magnet synchronous motor (PMSM), but can also be a switched reluctance motor, or an induction (asynchronous) motor. They may also use neodymium magnets and be outrunners (the stator is surrounded by the rotor), inrunners (the rotor is surrounded by the stator), or axial (the rotor and stator are flat and parallel).

The advantages of a brushless motor over brushed motors are high power-to-weight ratio, high speed, nearly instantaneous control of speed (rpm) and torque, high efficiency, and low maintenance. Brushless motors find applications in such places as computer peripherals (disk drives, printers), hand-held power tools, and vehicles ranging from model aircraft to automobiles. In modern washing machines, brushless DC motors have allowed replacement of rubber belts and gearboxes by a direct-drive design.

无刷直流电动机 (BLDC)，也称为电子换向电动机，是使用直流 (DC) 电源的同步电动机。 它使用电子控制器将直流电流切换到产生磁场的电机绕组，该磁场在空间中有效旋转并且永磁体转子跟随该磁场。 控制器通过调整直流电流脉冲的相位和幅度来控制电机的速度和扭矩。 该控制系统可替代许多传统电动机中使用的机械换向器（电刷）。

无刷电机系统的结构通常类似于永磁同步电机 (PMSM)，但也可以是开关磁阻电机或感应（异步）电机。 它们也可以使用钕磁铁，并且可以是外转子（定子被转子包围）、内转子（转子被定子包围）或轴向（转子和定子是扁平且平行的）。

与有刷电机相比，无刷电机的优点是功率重量比高、速度快、速度 (rpm) 和扭矩几乎瞬时控制、效率高和维护少。 无刷电机在计算机外围设备（磁盘驱动器、打印机）、手持式电动工具以及从模型飞机到汽车等各种交通工具中都有应用。 在现代洗衣机中，无刷直流电机可以通过直接驱动设计取代橡胶皮带和齿轮箱。