电机的

The first part for sleeve cross trough milling special plane's design, including milling machine's basic size choice, electrical machinery's choice, transmission system's design and milling cutter's choice.

第一部分为套筒十字槽铣削专机的设计，其中包括铣床的基本尺寸的选择、电机的选择、传动系统的设计和铣刀的选择。

A centroid adjustment method is presented which can maintain the horizontal pose robot body when one arm is hung on the overhead ground lines. The balance weight is moved by the servo motor according to the angle of inclination between the inspection robot body and the horizontal plane, which can be checked by the obliquitous sensor, so that the centroid position of inspection robot is concentrated on the arm that is hung on the overhead ground lines. Because the body of inspection robot is kept in horizontal pose, the other arm can accomplish corresponding task for attaching to or detaching from the overhead ground lines.

本文提出了一种质心调节方法，利用倾角传感器测量机器人车体与水平面之间的倾角，从而控制配重块移动电机的运动，将机器人的质心调节到悬挂于架空地线上的那只手臂上，因此能保证机器人车体保持水平姿态，确保需要脱线或上线的手臂完成相应的动作。

Compared with hard-switching inverter, the soft-switching inverter's power swatches turn-on at zero voltage or zero current conditions, zero switching losses in theory, which can improve the efficiency of the system and device power density, reducing the system electromagnetic interference and ensure a brushless DC motor performance and reliability.

与硬开关逆变器相比软开关逆变器的功率开关在零电压或零电流条件下导通，理论上开关损耗为零，从而可以提高系统的效率和装置的功率密度，减小系统的电磁干扰，保证了无刷直流电机的性能和可靠性。

The line-tracking system and obstacle-avoiding system use the infrared photoelectric sensors to realize intelligent walking. The LED display system which through control the input and output of 74HC595's data, shows the prearrange face at 24×24LED matrix. Then, simulate the brow change by changing picture to get the function of changing faces.

机器人运动过程中，采用PWM技术和开环系统控制无刷直流电机的运行，实现机器人的行走控制；机器人的寻线及避障系统采用红外光电传感器，实现机器人的智能行走；LED显示系统中，通过编写程序实现对74HC595的数据输入输出控制，在24×24LED点阵上显示预置的面部表情，通过画面切换模拟人物表情变化，实现变脸功能。

Head life expectancy is limited, and frequently will speed up the read-write head and head arm motor wear and tear and frequent disk read and write and even make the area a regional temperature, magnetic medium will affect the stability of the area will lead to read and write errors, due to high temperature will make the area of hot pockets of serious head and facial disc closer under normal circumstances head and disc surface only a few microns, have a closer?

磁头寿命是有限的，频繁的读写会加快磁头臂及磁头电机的磨损，频繁的读写磁盘某个区域更会使该区温度升高，将影响该区磁介质的稳定性还会导至读写错误，高温还会使该区因热膨涨而使磁头和碟面更近了（正常情况下磁头和碟面只有几个微米，更近还得了？

The radial rectilinear stretching motion is firstly analysed, and its condition is deduced. Then two planetary gear mechanisms are assembled to realize the motion. In addition, the kinematics and dynamics analysis of arm mechanism is done, which provide the theoretic basis for the selection of servomotor and for holding the good dynamics and static performance of the clean robot.

首先对其末端执行器的径向直线伸缩运动展开分析，得出了实现该运动的必要条件，并采用两组行星轮系与连杆机构的组合形式来实现末端执行器的运动，此外还对该机构进行了运动学和动力学分析，为电机的选择以及控制净化机器人的动态性能和静态特性提供理论基础。

In the process, a still robot is regarded as a beacon, while a moving robot driving itself toward it with infrared sensors for localization and completes the docking process. Two infrared sensors on top of the front-end attachment of the moving robot are rotated by two stepper motors and the infrared ray emitted are reflected respectively by the two reflectors on top of the back-end attachment of the beacon robot.

在该方法中，设定一个静止的信标机器人，移动机器人利用红外传感器定位，安装在移动机器人前端连接件上的两个红外传感器分别在步进电机的驱动下旋转，它们发出的红外光分别被信标机器人后端连接件上的两个反射体反射回来。

The paper presents the whole testing item of the testing system. The industrial computer can draw the curve automatically by using MATLAB, and we can get the whole result repot forms in the end.

论文详细的分析和论述了三相异步电动机各个试验项目的自动测试，在所研制的测试系统中，可以根据试验的结果用MATLAB进行曲线拟合，最后得到三相异步电机的工作特性曲线和型式试验的结果报表。

Methods: The precise frequency of RMF is controlled by using microcomputer to drive step motor, and intensity of magnetic field is measured by using 10-bit Analog-to-Digital Converter module which is integrated in microcomputer. According, the technique of LCD screen to display relative information, such as, frequency, intensity of magnetic field, time of timer, is applied.

采用高性能单片机实现精确地控制进电机的转速，从而达到控制旋转磁场的频率，并利用其内带的10位A/D转换实现对磁场强度的测量，同时利用LCD显示旋转的频率、磁场强度、定时时间等信息。

The system selects selsyn as the monitor of position feedback. The system controls the output of DC according to the error value that the feedback signal from the selsyn is compared with the input.

整个系统是根据位置反馈装置的反馈信号与系统的输入信号（利用传感器等元件采集的目标信号）的误差值，来控制电机的输出，进而控制座椅的运动。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。