In the prolegomenon , author makes a brief review on the history and technology development of hydraulic turn tables , their direct driving motors and their control systems 文章在绪论部分简明扼要回顾仿真转台、液压仿真转台直接驱动伺服马达及液压仿真转台控制系统的发展概况、关键技术等。
A direct drive system , used on track bikes , in which the chain ring and rear cog are linked , so that the pedals turn constantly while the bicycle is moving , and coasting isn ' t possible 固定飞轮，或称“死飞” ，飞轮与后轮轴皮连为一体，脚踏转动与后轮转动完全同步，无法实现一般棘轮飞轮自行车的脚踏不动时的滑动。
It also discusses the key technologies of robotic wafer handling system , including direct drive , magnetic fluid seals , magnetic coupling , trajectory planning , control technology , calibration and gripping 就直接驱动技术、磁性流体密封技术、磁力传动技术、硅片机器人轨迹规划与控制技术、校准技术以及夹持技术，对硅片机器人传输系统的关键技术进行了探讨。
Because of its outstanding characteristics of high speed , high acceleration , high position accuracy and so on , the direct drive feed system driven by linear motor is hopeful to be a basic type of feed drive system of high speed machine tool in 2 p1 century 直线电机直接驱动进给系统具有速度、加(减)速度高、定位精度高等一系列突出的优点，有望成为21世纪高速加工机床的基本驱动方式。
" digital olympics " is an accelerator of the " digital beijing " project , representing the most practical demand , the most vital opportunity , the most valuable brand and the most direct driving force in the high - speed informatization process of the capital city ? ? "数字奥运"是"数字北京"工程的加速器，是推进首都信息化高速发展最现实的需求、最重要的机遇、最有价值的品牌和最直接的动力。
The current loop technique improves the stabilization bed ability to reduce base disturbance direct drive constraint couple and enhances the torque sturdiness . the stabilization error is reduced with current loop technique under same base angular disturbance 在转台稳定系统中使用电流环技术,提高了转台对直接带动约束耦合的抑制能力,提高了系统的力矩刚度,在同等的扰动条件下,降低了稳定误差。
Direct drive volume control hydraulic servo system , which is composed of hydraulic pump driven by ac servo motor and executive elements , takes advantages of both ac servo motor ' s flexibility of controlling and hydraulic great output force 直驱式电液伺服装置,它是由交流伺服电机驱动的液压泵与执行元件组成,它具有伺服电机控制的灵活性和液压系统出力大的双重优点,即用电动机变速直接驱动液压泵,实现对系统的控制。
The direct drive mode based on the permanent magnet ( pm ) linear motor can be provided for the best performance of the electric discharge machining . it finishes the high speed and high acceleration cutting , and solves the difficult problem of manufacturing deep slot mould 永磁直线电机的直接驱动方式可赋予电火花机床优良的性能，能实现高速和高加速度加工，解决了长期困扰电火花加工业的深型腔加工难的问题。
This machine is used for straight - line bevel cutting and bevel grinding and polishing for flat glass , in certain condition , it can be also used in bevel cuttig , bevel grinding and polishing for soft stone panel . the contrilling system adopts plc , it can accomplish automatic grinding cutting after entering processing parameter , convery speed adopts speed adjustment of fre quency conversion , direct drive of wheel head motor , all motions for joining in parameter adjustment completely adopt straight - rolling guide - track with front beam and wheel head lifting lntegrally . the transmission of input and output adopts synchronization tooth belt and photo - electricity switch positioning , and position limitation of two pass is much more reliable Sxm371pa型玻璃直线斜边磨边机是用于玻璃直线斜边斜切，斜磨及光抛的专用设备，在一定条件下也可以用于软石板材的斜切斜磨及抛光。控制系统采用plc控制。输入加工参数后可自动完成磨削传送速度采用变频调速，磨头电机直接传动，所有加工参数调整运动副全部采用直线滚动导轨，前梁与磨头整体升降，输入输出传送采用同步形带，光电开光定位，双行程限位更安全可靠。
