电机驱动的

A structure of automatic balancing head using PMDFM (Permanent Magnet Difference Frequency Motor) and an automatic balancing technique employing non-contact synchronously rotating electromagnetic force are put forward, and both are studied in respects of theoretical analysis, parameter calculation and experiment practice.

本文是在国家教委高校博士学科点基金和黑龙江省自然科学基金的资助下完成的，侧重于研究采用特种电机结构的自动平衡头的新的原理、结构及驱动控制方法。

Motion synchronization between tool in X direction and principal axis rotation was controlled by electronic gearbox in cam turning. And profiling mechanism could be superseded by servo tool-holder. Linear motor direct drive servo tool-holder was designed, and host-slave control system with PC and DSP was developed for the require of high-speed and realtime servo. The technical process was analyzed in cam turning. Servo tool holder with tool swinging and principal axis variable rotate speed were presented to keep constant cutting angle and speed.

将电子齿轮箱用于凸轮车削加工系统的传动，以伺服刀架取代了传统加工的靠模装置，实现了刀具X方向直线运动与机床主轴转动的同步控制；设计了直线电机直接驱动的伺服刀架及基于PC与DSP构成的上—下位机控制结构，采用DSP进行实时控制以满足高速伺服需要；对凸轮加工过程的工艺特点与恒角度、恒速度车削进行研究，提出了具有刀具摆动功能的伺服刀架与机床主轴变转速运动方案。

The stepping-motor-driven warp let-off unit is applied to 1515-PJR flexible rapier loom. The warp tension is measured by using IBM-PC and CRAS software package. A new measuring index of warp tension for comparing the performance of warp let-off motion is given. The statistical analysis on the warp tension in the weaving process from full warp beam to empty is conducted. Also, the spectrum of the dynamic warp tension is analyzed, and the influences of the warp let-off motion' timing on warp tension are discussed.

本文研制的步进电机驱动送经装置在1515-PJR挠性剑杆织机上进行了实际织造运行，用IBM-PC微机和CRAS软件包对经纱张力进行了现场测试，提出了一项新的衡量送经装置性能好坏的经纱张力测量指标，对从满织轴到空轴织造过程中的经纱张力水平进行了统计分析，对经纱动态张力信号进行了频谱分析，并研究了送经运动的时间安排对经纱张力的影响。

The dynamics of the beam pumping well system can be described in a more realistic way by solving the combined models,and hence a method for studying motion and forces of the beam pumping system driven by different types of motor is provided.

将这些数学模型联立求解，可更真实地描述抽油机井系统的运动规律，从而提供了一种研究不同特性电机驱动下抽油机井的运动和受力的方法。

According to the auto brake tester, it has been designed that the hardware circuit of the testing system based on 89C55 single-chip microcomputer, including A/D circuits for sensor interfaces, D/A circuits for needle indicating type display device, driving circuits for brake motors, the communication interface circuitbetween the single-chip microcomputer and pc, etc.

针对所研究的汽车制动试验台，设计了基于89C55单片机的试验台测控系统硬件电路，包括传感器接口与A／D转换电路、指针式显示装置的D／A转换电路、制动电机驱动电路、单片机与PC机之间通讯的接口电路等。

Making use of the low speed and large torque of ultrasonic motors,we designed a five-fingered dexterous hand driven by ultrasonic motors.

利用超声电机低速和大转矩的特性设计了由其驱动的五指灵巧手，传动方式采用的是腱传动方式，每个手指均有4个自由度和4个关节，即其手指具有相互独立的关节，从而可以使手指末端两个关节的运动完全依照人手的二次运动方程耦合关系进行运动规划。

The different mode of the motor has an influence on the stability of motion in various terrains.

讨论了对于在复杂环境中轮式探测车的电机驱动模式的选择对探测车运动稳定性的影响。

Freescale16 design is partly based on SCM MC9S12DG128 as a system for the control processor, based on infrared sensors detect the road, through the processing and analysis of information, access to the track with black lines and gun feedback on the autonomous mobile trolley loop Feedback control; through the motor-driven and S12 to PWM control, making autonomous mobile trolley to the track in accordance with the regulations and to advance.

设计部分采用了Freescale16为单片机MC9S12DG128作为系统控制处理器，基于红外传感器检测道路信息，通过对信息的处理和分析，获取赛道黑线并结合测速反馈实现对自主移动小车的闭环反馈控制；还通过直流电机驱动和S12脉宽调制控制转向，使得自主移动小车能按照规定的轨迹前进和转向。

Based on summary of researches at home and abroad,the regenerative circuits suitable for ASD are classified and explained,the working principle and realization of each method are analyzed and discussed.

基于对国内外研究现状的总结，对适用于电机变速驱动的再生电路进行了分类说明，分析和讨论了各种方法的工作原理和实现方法。

The present paper deals with a simulation method to study the performance of a cycloconverter-fed synchronous motor drive in the presence of interharmonics/subharmonics taking into account the discontinuities in the output current as well as the effect of ripple in the output current on the input current of the cycloconverter.

用仿真方法研究了交交变频性能喂食存在的谐波同步电机驱动，给出/谐波考虑到不连续的输出电流，以及在关于输入输出电流的涟漪效应目前的交交变频。

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。