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直流电机

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Both workpiece rotation and target rotation adopt a modular riving circuit of dynamos that produces a direct current. Armature stepping down and starting can be achieved by PLC the software procedure.

工件旋转和靶旋转均采用模块化的直流电机驱动电路,通过PLC软件程序实现电枢降压软起动。

The rotative speed measurement methods of high - speed wide - range flat sewing machine brushless DC motor are discussed.

摘 要:论文针对宽调速范围高速工业平缝机无刷直流电机的转速测量方法进行研究。

At first,the prin ciple of BLDCM is analyzed and the model is built;then a test is performed on a tining system of close loops of speed and current;torque ripple components are r educed by controlling switching andles of the PWM.

文中首先建立永磁无刷直流电机的数学模型,以此进行转速和电流双闭环调速系统控制;并通过调节 PWM发生器的开关频率来减少转矩脉动。

Experimental results show that the system has good dynam ic and static characteristics.

数字无刷直流电机驱动控制系统,用于实现小型无。人飞机的舵机控制,。。。

The torque ripple was large when its speed was low,its application was limited for the commutating process.

摘 要:常规永磁无刷直流电机,其换相位置检测采用霍尔开关元件,由于换相过程的存在,其低速运行时转矩脉动较大,限制了其应用。

Some basic theories,such as methods of position detection,PWM control and starting policy of senseless BLDCM are disserted in the first.

首先分析了无传感器无刷直流电机的位置检测方法、PWM调制方式和启动策略等控制原理。

In this thesis, the Brushless DC Motor control system of Magnetic Suspending Flywheels based on DSP technology is researched .

论文对基于DSP技术的磁悬浮飞轮无刷直流电机控制系统进行了研究。

By using VDMOS field-effect transistorsas the switch elements, the electronic controlling circuits of the PM brushless DC motor, including the main power switch circuit , power driving circuit, absorption circuit, and logic controlling circuit, are designed.

用 VDMOS场效应晶体管作为开关元件,设计了稀土永磁无刷直流电机的电子控制线路,主要包括:功率开关主回路,功率驱动回路,吸收回路,逻辑控制电路。

First state reconstruction techniques are used to transform the DC motor model into a cascaded structure and,then,nonlinear adaptive back-stepping controller is designed which is robust to the parameter uncertainties and load torque disturbance.

首先通过状态重构将直流电机系统模型转化为级联结构,其次考虑参数不确定及转矩干扰设计具有鲁棒性的自适应反向步进控制器。

Applications on noise absorption of DC motor, power supply input, surge absorption of inductive load, bypass condenser, communication line protection and prevention from electricity surge were put forward because of higher performance requirement on weapon system.

针对武器系统的高性能要求,本文提出了SrTiO3基压敏电阻在直流电机消噪、电源输入端、吸收电感性负载开关浪涌、旁路电容器、通信线路防护、防止电涌冲击等方面的应用。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。