电机驱动的

Precision, stepper motor-driven tube and tray input and output for reliable operation and easy changeover.

精确的步进电机驱动，带盘输入与输出，可靠的操作，容易的完全改变

With development of power electronic technology, power converters have been used widely in switching power supply, motor-driven and controlled, compensate of transmission-line system of electric power and harmonious wave manage.

随着电力电子技术的发展，功率变换器在开关电源、电机驱动控制、电网的无功补偿和谐波治理等领域得到广泛的应用。

Aimming at the fuel control requirement of micro-turbojet,the automobile's electric fuel pump with adaptable improvement is chosen as fuel-feed system.The performance of fuel pump and the technical difficulty of flux control as the speed of pump doesn't be measured are analyzed.Using Philips 83C552 MCU as the main control chip,the system adopts voltage negative feedback combined current compensation instead of rotation speed negative feedback and a PWM convertor to design the flux closed loop control system.

针对微型涡喷发动机的燃油控制要求，选用汽车用电动油泵进行适应性改进作为供油执行装置，详细分析了电动油泵的特性及泵转速无法测量情况下流量控制的技术难点，并以83C552单片机为核心，采用电压负反馈加电流补偿代替转速负反馈、电机通过PWM驱动的方法设计电动油泵流量闭环控制系统。

Two-axis machine tool feed system uses a typical stepper motor-driven ball screw transmission mode, in the saddle and the skateboard with bed bed bed between the saddle and the sliding surface of the rail plate affixed to TSF, sliding friction coefficient is very small, there is help to improve machine performance and production efficiency fast response.

机床两轴进给系统采用步进电机驱动滚珠丝杠的典型传动方式，在滑板与床鞍及床鞍与床身之间的滑动面处贴有TSF导轨板，滑动磨擦系数非常小，有助于提高了机床的快速响应性能及生产效率。

The inner auto -transformer is driven by servomotor;with different speeds in voltage rising and falling.

内置的升压器由伺服电机驱动，具有不同的升、降压速率。电压和电流双通道测量，2路A/D同时转换，体现了真正的实时性。

Aluminum foil transmit, the squirrel-cage rotation is adopt inverter and servo motor driver.

铝箔的传送，鼠笼的转动采用的变频器和伺服电机驱动。

From the extruder materials in the suction into two gears, and full of a space, with the rotation of the tooth in the shell movement, finally two teeth mesh when eduction.

齿轮泵由一个独立的电机驱动，可有效地阻断上游的压力脉动及流量波动。在齿轮泵出口处的压力脉动可以控制在1％以内。

The control of a robot with unactuated joints is much more difficult than a conventional robot. Because the unactuated joints can't be controlled directly, it is an incomplete controllable system. Usual smooth feedback control is not usable for such system.

引言在一般的机器人控制中，机器人各关节是由各自的电机分别控制驱动的，这样在运动控制上非常简单，一般的只需要做运动学反向解，通过位置反馈控制来实现预定的运动轨道。

Seventhly, Using the design method of single terminal reverse switching inverter, a driving and controlling circuit of the rod-shaped motor with two phases and high frequency was realized.

第五，提出了具有棒形结构特点的驻波直线型超声电机驱动振子优化的动力学设计目标和压电元件配置方案，并提出了相应的动力学设计方法。

By analyzing ultra-precision table systemed researching status and the principle of electrorheological fluid, an 'ERF semi-active damper based on linear motor drive-air/magnetic guide way'nanometer positioning table system is put forward.

通过分析超精密工件台系统的研究现状和存在问题及电流变液ERF 的机理和应用现状，提出&基于ERF 半主动阻尼的直线电机驱动-气浮/磁浮导轨&纳米级超精密工件台系统。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。