区分MOOG伺服阀与MOOG变频阀
MOOG伺服阀与MOOG变频阀是我司长期供应的产品！MOOG伺服阀与MOOG变频阀一手价格供应！MOOG伺服阀与MOOG变频阀备有很多现货！订购MOOG伺服阀与MOOG变频阀！两者的共同点：沟通伺服的技术自身就是学习并应用了变频的技术，在直流电机的伺服操控的基础上经过变频的PWM方法仿照直流电机的操控方法来完结的，也就是说沟通伺服电机一定有变频的这一环节：变频就是将工频的50、60HZ的沟通电先整流成直流电，然后经过可操控门极的各类晶体管（IGBT，IGCT等）经过载波频率和PWM调度逆变为频率可调的波形类似于正余弦的脉动电，因为频率可调，所以沟通电机的速度就可调了（n=60f/p ，n转速，f频率， p极对数）
    简略的变频器只能调度沟通电机的速度，这时能够开环也能够闭环要视操控方法和变频器而定，这就是传统意义上的V/F操控方法。许多的变频现已经过数学模型的建立，将沟通电机的定子磁场UVW3相转化为能够操控电机转速和转矩的两个电流的重量，大多数能进行力矩操控的品牌的变频器都是选用这么方法操控力矩，UVW每相的输出要加霍尔效应的电流检查设备，采样反响后构成闭环负反响的电流环的PID调度；ABB的变频又提出和这么方法不一样的直接转矩操控技术，详细请查阅有关材料。这么能够既操控电机的速度也可操控电机的力矩，并且速度的操控精度优于v/f操控，编码器反响也可加可不加，加的时分操控精度和照顾特性要好许多。
    驱动器方面：伺服驱动器在展开了变频技术的前提下，在驱动器内部的电流环，速度环和方位环（变频器没有该环）都进行了比通常变频更准确的操控技术和算法运算，在功用上也比传统的伺服强健许多，首要的一点能够进行准确的方位操控。经过上位操控器发送的脉冲序列来操控速度和方位（当然也有些伺服阀内部集成了操控单元或经过总线通讯的方法直接将方位和速度等参数设定在驱动器里），驱动器内部的算法和更快更准确的核算以及功用更优良的电子器件使之更优越于变频器。
    电机方面：伺服电机的材料、构造和加工技术要远远高于变频器驱动的沟通电机（通常沟通电机或恒力矩、恒功率等各类变频电机），也就是说当驱动器输出电流、电压、频率改动很快的电源时，伺服电机就能根据电源改动发生照顾的动作改动，照顾特性和抗过载才华远远高于变频器驱动的沟通电机，电机方面的严峻差异也是两者功用不一样的根柢。就是说不是变频器输出不了改动那么快的电源信号，而是电机自身就反响不了，所以在变频的内部算法设守时为了保护电机做了相应的过载设定。当然即便不设定变频器的输出才华仍是有限的，有些功用优良的变频器就能够直接驱动伺服电机。
主营：液压配件、柱塞泵、齿轮泵、叶片泵、电磁阀、节流阀、比例阀、溢流阀、换向阀、流量阀；伺服驱动器、伺服模块、伺服电机、探头、传感器、电缆、电源模块、编码器、接近开关等。咨询。

Both have in common is that of the ac servo technology itself is the reference and application of frequency conversion technology, on the basis of the dc motor servo control imitation of dc motor by PWM variable frequency control mode, that is to say, there must be ac servo motor frequency conversion of this link: frequency conversion power frequency is 50, 60 hz ac rectifier to dc first, and then through a control gate of the transistor (IGBT, IGCT, etc.) through the carrier frequency and PWM control inverter for adjustable frequency waveform is similar to the cosine of pulse power, because the frequency is adjustable, so the speed of ac motor is adjustable (n = 60 f/p, n speed, frequency, f p a logarithmic)Simple inverter can adjust the speed of ac motor, then can be open loop or closed loop depends on control mode and frequency converter, which is in the traditional sense of the V/F control mode.Many frequency conversion has been through the establishment of mathematical model of ac motor stator magnetic field UVW3 phase into can control the motor speed and torque of the two current component, most of the famous brand can control the torque converter is controlled by such way moment, UVW output of each phase with hall effect current detection device, after sampling feedback constitute a closed-loop feedback current loop PID regulation;ABB variable frequency is put forward and the way of such different direct torque control technology, specific please refer to the relevant data.This can not only control the motor speed also can control the motor torque, speed and control precision is better than that of v/f control, encoder feedback can also add don't add, add better control precision and response characteristics.Drive: servo driver in the development of the premise of frequency conversion technology, inside the drive current loop, velocity loop and position loop (inverter without the ring) have been more accurate than general frequency conversion control technology and algorithm of computing, powerful in function than the traditional servo many, the main point can be accuray position control.Through the upper controller sends a pulse sequence to control the speed and position (of course also some internal integration servo control unit directly or through the bus communication way to set the parameters such as position and speed) in the drive, drive internal algorithm and a faster and more accurate calculation and performance more superior electronics is superior in frequency converter.Aspects: motor servo motor material, structure and processing technology is far higher than the frequency inverter ac motor driven (general ac motor or constant torque and constant power and other kinds of variable frequency motor), that is to say, when the driver output current, voltage, the power of the frequency change quickly, the servo motor can vary according to the action of the power supply change response, response characteristic and the overload capacity is much higher than ac frequency converter drive motor, the motor of the serious differences and they have different performance.That is not the power of the inverter output is not changed so fast signal, but the machine itself can't reaction, when the internal algorithm of frequency conversion is set so did corresponding overload set in order to protect the motor., of course, even if you don't set the output of the converter capacity is limited, some of the excellent performance of frequency converter can be direct drive servo motor.