服务热线 18660772233
0531-55536261
联系在线客服

交直流伺服电机体系特点介绍

来源:http://www.jnmcd.com 发布时间:2019-07-15 浏览:
功率驱动
Power Drive
关于在雷达上常常运用的直流伺服体系的驱动电动机功率扩展有些,当天线重量轻,转速慢,驱动功率较小时,通常为几十瓦,能够直接用直流电源操控电动机。当驱动功率需求在近千瓦或千瓦以上时,选择驱动计划,也即扩展直流电动机的电枢电流,即是描画伺服体系的重要有些。大功率直流电源当前选用较多的有:晶体管功放、晶闸管功放和电机扩展机等等。关于千瓦级的晶体管功放运用的较少。
As for the power expansion of the DC servo drive motor, which is often used in radar, when the antenna is light, the speed is slow and the driving power is small, it is usually tens of watts, and the DC power supply can be used to control the motor directly. When the demand for driving power is close to or above kilowatt, it is important to choose the driving plan, that is, to expand the armature current of DC motor, to describe the servo system. Currently, high-power DC power supply is mostly used: transistor power amplifier, thyristor power amplifier and motor expander, etc. There is less use of kilowatt-level transistor power amplifiers.
可控硅技艺在上世纪60~70年代初得到疾速的展开和普遍的运用,但因其时的各方面缘由,如可靠性等,不少商品丢弃了可控硅操控。当前的集成驱动模块通常都为晶体管或晶闸管制造。电机扩展机是传统的直流伺服电机的功放设备,因其操控简单,强壮经用,当前的新式号的雷达商品上仍有选用。下面主要以扩展电机为例,和沟通伺服电机比拟其优缺陷。
Thyristor technology has been rapidly developed and widely used in the 1960s and early 1970s. However, due to various reasons, such as reliability, many commodities have abandoned thyristor control. Current integrated drive modules are usually made of transistors or thyristors. The motor expander is the power amplifier equipment of the traditional DC servo motor. Because of its simple operation and strong operation, the current new type radar products are still available. The following is mainly to expand the motor as an example, and communication servo motor to compare its advantages and disadvantages.
扩展电机常称为扩展机,通常是用沟通异步感应电动机拖动串联的两级直流发电机组,以此来完成直流操控。两组操控绕组,每组的输入阻抗为几千欧,若串接运用输入阻抗约10千欧,伺服电机通常为互补平衡对称输入,当体系输入不为零时打破其平衡,使扩展电机有输出信号。当输入电流为十几到几十毫安时其输出可达100v以上的直流电压和几安到几十安的电流,直接接到直流伺服电机的电枢绕组上。其主要缺陷是体积重量大,非线性度,特别在零点临近不是极好,这关于需求高的体系需求认真处置。
Extension motors are often referred to as extenders, which usually use communication asynchronous induction motors to drive two-stage DC generators in series to complete DC control. Two sets of control windings, each set of input impedance is several thousand euros. If the input impedance is about 10 thousand euros in series, the servo motor is usually a complementary balanced symmetrical input. When the system input is not zero, its balance is broken, so that the extended motor has output signal. When the input current is more than ten to tens of milliamperes, the output voltage can reach more than 100 V and the current of several to tens of amperes can be directly connected to the armature winding of the DC servo motor. Its main drawbacks are large volume and weight, non-linearity, especially near zero point is not very good, which is about high demand system needs to be carefully dealt with.
山东微型电机
而沟通伺服电机都配有特地的驱动器,它在体积和重量上远小于同功率的扩展电机,它靠内部的晶体管或晶闸管组成的开关电路,依据伺服电机内的光电编码器或霍尔器材判别转子其时的方位,决议驱动电机的a、b、c三相应输出的状况,因而它的功率战争稳性都极好。所以不像操控扩展电机需求做特地的功放电路。这种电机通常都为永磁式的,驱动器发作的a、b、c三相改动的电流操控电机转变,因而称为沟通伺服电机;驱动器输入的操控信号能够是脉冲串,也能够是直流电压信号(通常为±10v),所以也有将其称为直流无刷电动机。
Communication servo motors are equipped with special drivers, which are much smaller in size and weight than expansion motors of the same power. It relies on the switching circuit composed of internal transistors or thyristors. According to the photoelectric encoder or Hall device in the servo motor, the orientation of the rotor at that time can be judged. It decides that the three-phase a, B and C of the driving motor should be transported. As a result, its power war stability is excellent. So it's not like the special power amplifier circuit needed to operate the extended motor. This kind of motor is usually permanent magnet type, and the three-phase change of a, B and C triggered by the driver controls the change of the motor, so it is called communication servo motor. The control signal input by the driver can be either a pulse train or a DC voltage signal (usually (+10v), so it is also called a DC brushless motor.
两种电机的好坏比拟
Comparison of Two Kinds of Electric Machines
对两种电机作过简单的实验比拟:只需将体系原先的直流差错信号直接接入沟通伺服驱动器的模仿操控输入端,用沟通伺服电机和它的驱动器替代原先的差分功放、电机扩展机和直流伺服电机,而操控有些和测角元件等均不变,简单比拟两种计划的输出特性。
Simple experiments have been done to compare the two motors: the original DC error signal of the system is directly connected to the analog control input of the communication servo driver, and the communication servo motor and its driver are used to replace the original differential power amplifier, motor expander and DC servo motor, while some of the control and angle measuring elements remain unchanged. Simply compare the output characteristics of the two schemes.
有了山东微型电机上面的小总结,希望对广大客户有所帮助,如果有什么不理解的或者寻求帮助的请点击我们的网站:http://www.jnmcd.com或者来电咨询,我们会尽全力为您解决
With the summary of Shandong micro-motor, I hope it will be helpful to our customers. If you don't understand or ask for help, please click on our website: http://www.jnmcd.com or call for consultation. We will try our best to solve it for you.
推荐新闻
  • 联系人:张经理
  • 手机:18660772233(微信同号)
  • 电 话:0531-55536261 / 0531-55536272
  • 邮 箱:911510021@qq.com
  • 地 址:山东济南市济南时代欧亚电子大厦一楼A111号
  • Copyright © 2018 济南美磁达电子有限公司 All Rights Reserved 诺商信息 网站地图 XML TXT  鲁ICP备18050301号-1

    鲁公网安备 37010502001057号