篇一：机械设计制造及自动化专业英语翻译
机械设计制造及自动化专业英语
篇二：机械设计制造及自动化专业英语翻译
机械设计制造及其自动化
专业英语—大作业
学院
班级姓名学号
辅导老师
分数_______________
Unit15Control System Fundamentals
控制系统原理
Numerically controlled machines often weigh up to 100 tons and yet are required to position a cutting tool with an accuracy of the order of 0.002 mm.The control system must move the tool at federates as high as 8cm/sec while encountering loads which may vary dramatically on a given path. The NC machine must have dynamic response characteristics that enable it to follow intricate contours with a minimum of path error. Clearly, these requirements dictate a control system that is matched to the mechanical characteristics of the machine it drives.
数控机床一般重100吨，还需要按一定顺序的精度为0.002毫米的刀具位置。控制系统必须移动过刀具在进给速度高达8厘米/秒时，同时在一个给定的路径在遭遇荷载是很引人注目的。数控机床必须具有动态响应特性，使它能够遵循复杂的轮廓具有最小的路径误差。显然，这些要求决定了控制系统相匹配的驱动机的机械特性。
A control system is a combination of devices that regulate an operation by administering the flow of energy and other resources to and from that operation. Essentially, a control system is made up of interrelated subsystems that perform tasks which in orthodox
machining processes are managed by an intelligent human operator.
控制系统是一些通过管理，规范操作使用能源和其他资源的操作的组合设备。基本上说，一个控制系统是由相互关联的子系统，执行一个正确的加工过程是由一个智能人操作管理的任务。
The control systems for NC machines therefore serve to replace the human machine operator and significantly improve upon even the best human performance. A direct analogy can be made between numerical controls and the human operators they replace. Both:
①Sense the current status of the machine;
②Make logical decisions which are required to accomplish a task;
③Communicate decisions to the machine by actuating proper mechanical devices;
④Have the ability to store information: instructions, date, and the results of logical decisions.
数控机床的控制系统取代需要人类操作的机床服务人们，经过改善后，已经可以与最好的工人的表现相媲美。在数控和人工操作有一个直接的比较。例：
①数控机床的重要地位；
②根据需要完成的任务作出逻辑的决定；
③通过有使动作特性的机械设备向数控机床传递命令；
④有储存信息的能力：指令，日期，和逻辑决策结果。
In summary, a machine control system is a combination of electronic circuitry, sensing devices, and mechanical components which guide the cutting tool along a predefined path.
总之，一机控制系统是由电子电路，传感设备，引导刀具沿预定路径工作的机械部件组成。
In the sections that follow, the reader is introduced to the theory of machine control.
在下面的部分，介绍给读者的是机械控制的原理。
We have attributed four major characteristics to any control system: the ability to sense data ;make logical decisions;communicate and actuate; and store information in a memory. If a system performs these functions without the aid of a human operator, by definition it automatically controls a given task. Let us consider one such simple operation.
我们总结了所有控制系统的四大特性：感知数据的能力；作出合乎逻辑的决定；数据传输和机械驱动；还有记忆存储信息。如果一个系统在不需要人帮助的情况下能执行这些之前通过定义的自动控制一个给定的任务。让我们考虑这样一个简单的操作。
Suppose that an electric motor is used to a freight conveyor between two floors of a building. To operate smoothly the conveyor
must maintain a constant speed as additional loads are added from loading shoots. We can assume that the speed of rotation of an electric motor is directly proportional to the electric current supplied to it. Hence as the load increases on the conveyor, the torque requirement of the motor is increased and additional power must be supplied to maintain constant speed. This is usually achieved by increasing the supply voltage.
假设一个电动马达在一栋楼不同层之间用于货运输送。为能使操作平稳，当有额外负载时传送机必须保持恒定的速度。我们可以假设一个电机的旋转速度与电流成正比。因此，在传送带上负载的增加时，提高了电机的转矩要求和额外的能量供应必须能够维持恒定的速度。这通常是通过增加电源电压达到。
If a motor speed indicator is within sight of a human operator, he can control the conveyor speed by increasing or decreasing the voltage supply manually. Such a system is illustrated schematically in Fig.15.1.
篇三：英文成绩单(机械设计制造及其自动化)出国材料
大学本科学生学籍成绩表
中华人民共和国
姓 名: 系部: 机械工程学院专 业: 机械设计制造及其自动化
UNDERGRADUATE ACADEMIC RECORD OF ********* UNIVERSITY
WUHAN, HUBEI, THE PEOPLE' S REPUBLIC OF CHINA
Name: Lei Feng STUDENT' S NUMBER: 000000000 Department: Mechanical Engineering Major: Mechanical Design, Manufacturing & Automation
《机械设计制造及其自动化英语怎么说》
由：免费论文网互联网用户整理提供,链接地址：
http://m.csmayi.cn/show/127602.html
转载请保留,谢谢!
- 上一篇：春节横幅标语
- 下一篇：大学生考察报告