专外英语翻译文章.doc

Translation of Technology English ------ What and Why of a Machine Servo Student ID: P111813881 Class: 2 Name: Shaodong He April 21,20014 What and Why of a Machine Servo Shaodong He1, a, Yongmei Ma2,b 1College of Electrical Engineering, Northwest University for Nationalities, Lanzhou, Gansu 2College of Electrical Engineering, Northwest University for Nationalities, Lanzhou, Gansu A502102088@, b1423407061@ Keywords：: Servo control, feedback, servo drives, AC servo drive industry, transistors, electric drives, servo systems. Abstract：Servo system is used to accurately reproduce or follow a process of feedback control systems. Servo derived from the English word Servo, as the name suggests, refers to an external system to follow instructions that people expect movement, and the movement of elements which include position, speed and torque and other physical quantities. Review servo system development process, from the earliest hydraulic, pneumatic to todays electrified by a servo motor, feedback device and the controller consists of a servo system. Today, as technology continues to mature, AC servo motor technology with its excellent value for money, and gradually become the dominant executive to replace DC motor servo system. AC servo system technology also makes the market matures showing rapid diversification. 什么是伺服机器及为什么 何绍东1, a, 马永梅2,b 1甘肃省兰州市西北民族大学榆中校区电气工程学院 2甘肃省兰州市西北民族大学榆中校区电气工程学院 a502102088@, b1423407061@ 关键字： 伺服控制， 反馈 ，伺服驱动 ，交流电工业伺服驱动器 ，晶体管， 电动驱动 ，伺服系统。 摘要：伺服系统是用来精确地跟随或复现某个过程的反馈控制系统。伺服源自英文单词“Servo”，顾名思义，就是指系统跟随外部指令进行人们所期望的运动，而其中的运动要素包括位置、速度和力矩等物理量。回顾伺服系统的发展历程，从最早的液压、气动到如今的电气化，由伺服电机、反馈装置与控制器组成的伺服系统。如今，随着技术的不断成熟，交流伺服电机技术凭借其优异的性价比，逐渐取代直流电机成为伺服系统的主导执行电机。交流伺服系统技术的成熟也使得市场呈现出快速的多元化发展。 Article： The control user should be familiar with servos.The user will understand what a servo is and why it is required in so many application. This discuss will answer these