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带你快速的了解直流无刷点击的使用运作!

来源:http://www.jnmcd.com 发布时间:2019-03-27 浏览:
直流无刷电机由同步电机和驱动器组成。这是典型的机电一体化产品。同步电机的定子绕组大多由三相对称星形衔接构成,这与三相异步电机十分类似。另一方面,转子被磁化的永磁体卡住。为了检测电机转子的极性,位置传感器装置在电机中。驱动器由电力电子器件和集成电路组成。
DC brushless motor consists of synchronous motor and driver. This is a typical mechatronics product. The stator windings of synchronous motor are mostly composed of three-phase symmetrical star connection, which is very similar to three-phase asynchronous motor. On the other hand, the rotor is jammed by a magnetized permanent magnet. In order to detect the polarity of the motor rotor, the position sensor is installed in the motor. The driver consists of power electronic devices and integrated circuits.
其功用是接纳电机的启动、中止和制动信号,以控制电机的启动、中止和制动。接纳位置传感器信号以及正向和反向信号,用于控制逆变器桥的每个功率管的开/关,以产生连续转矩;承受速度指令和速度反应信号来控制和调理转速;提供维护和显现等。
Its function is to receive the start, stop and brake signals of the motor to control the start, stop and brake of the motor. Position sensor signals and forward and reverse signals are used to control the on/off of each power transistor of the inverter bridge to generate continuous torque; speed commands and speed response signals are used to control and regulate speed; maintenance and display are provided.
山东无刷电机
装置在电机轴上的转子位置检测器是直流无刷电机的重要组成局部。它肯定电枢的每个相绕组何时开端通电。它的功用相当于普通直流电机中的电刷。改动位置检测器产生信号的时间(相位)相当于改动直流电机中电刷在空间中的位置,这对无刷直流电机的特性有很大影响。有许多构造类型的位置检测器,通常包括一组固定的检测元件和一个随电机转子旋转的位置信号发作器。
The rotor position detector installed on the motor shaft is an important part of the brushless DC motor. It confirms when each phase winding of the armature starts to turn on. Its function is equivalent to that of brushes in ordinary DC motors. Changing the time (phase) of the signal generated by the position detector is equivalent to changing the position of the brush in the space of the DC motor, which has a great influence on the characteristics of the brushless DC motor. There are many types of position detectors, usually including a set of fixed detection elements and a position signal generator rotating with the motor rotor.
在由霍尔元件组成的位置检测器中,霍尔元件是检测元件,电动机转子磁极自身是位置信号发作器。在其他构造中,例如电磁感应型、光电型和按下闭合开关型,缺口盘经常被用作位置信号发作器。例如,在光电类型中,凹口用于使光映照光电管以产生信号;在电磁感应型中,间隙用于改动开路变压器的磁路,从而在检测线圈中产生电动势等。
In the position detector composed of Hall element, Hall element is the detection element, and the rotor pole of the motor itself is the position signal generator. In other configurations, such as electromagnetic induction, photoelectric and press-close switch, notch discs are often used as position signal triggers. For example, in the photoelectric type, the notch is used to make the phototube illuminate to produce signals; in the electromagnetic induction type, the gap is used to change the magnetic circuit of the open-circuit transformer, thereby generating electromotive force in the detection coil, etc.
简而言之,经过改动输入到无刷电机定子线圈的电流波的交流频率和波形,盘绕绕组线圈构成盘绕电机几何轴线旋转的磁场。磁场驱动转子上的永磁钢旋转,无刷电机旋转。无刷电机的性能与磁钢的数量、磁钢的磁通量强度、电机的输入电压等要素有关。它还与无刷电机的控制性能有很大关系,由于输入是直流电流,电流需求电子调速器将其转换成三相交流电,还需求接纳遥控器接纳器的控制信号来控制无刷电机的转速,以满足模型的运用需求的定义,无刷电机的空转速度是KV值乘以输入电压,这也解释了为什么内转子电机的转速高于外转子无刷电机的转速。
In short, by modifying the AC frequency and waveform of the current wave input to the stator coil of the brushless motor, the coil winding constitutes the magnetic field rotating around the geometric axis of the motor. The magnetic field drives the permanent magnet steel on the rotor to rotate and the brushless motor to rotate. The performance of brushless motor is related to the number of magnetic steels, magnetic flux intensity of magnetic steels and input voltage of motor. It also has a lot to do with the control performance of brushless motor. Because the input is DC current, the current needs to be converted into three-phase AC by electronic governor. It also needs to accept the control signal of remote controller acceptor to control the speed of brushless motor to meet the definition of the application demand of the model. The idle speed of brushless motor is KV multiplied by the input voltage. This also explains why. The speed of inner rotor motor is higher than that of outer rotor brushless motor.
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