Learn the dialogue by heart.

10.2. Answer the following questions:

1. Where is PN during the conversation?

2. Why did JB get a call from Swanford Tools at Thurbs?

3. What road must PN take to Slingdon and where must he turn right?

4. What does Derek Salvage do at Swanford Tools?

5. What must PN not do when he meets Derek Salvage? Why?

6. What four arguments must PN bring out concerning the advantages of the RPH

radiophone?

7. PN says he will be back in Nutley by:

a) 3.30 b) 4.30 c) 4.15.

Задание 2. Act out the dialogue with the partner.

Задание 3. Make up your own dialogue.

Планы занятий в рамках самостоятельной работы студентов СРC

Семестр

№	Наименование темы задания	Методические рекомендации	Рекомендуемая литература
	Robots in Industry	Повторить лексику позаданной теме	1 (осн.) [226-227]
	Transmission Technology	Повторить грамматику	12 осн. [48-50]
	Solar Energy	Составить глоссарий	9 (осн.) [49-50]
	History of Electronics	Повторить лексику позаданной теме	30 (осн.) [10-12]
	Small Hydroelectric	Изучить детали прибора	12 осн. [48-50]
	Electrical Energy and Electrical Machines	Составить глоссарий по тексту	9 осн. [49].
	Flexible Production and Industrial Robots	Объем эссе 20- 30 предложений	19 осн. [20-22].
	Laser Technology	На сайте Интернета и в специальной литературе найти необходимую информацию	19 осн. [34-36].
	History of Electricity	Составить шесть специальных вопросов	5 (осн.)[96]
	Recent Developments of Energy	Составить шесть специальных вопросов	16(осн.) [56-58]

СРС 1

1. Read the text: Robots in Industry

Today most robots are used in manufacturing operations. The applications of robots can be divided into three categories:

1. Material handling

2. Processing operations

3. Assembly and inspection.

Material- handling is the transfer of material and loading and unloading of machines. Material- transfer applications require the robot to move materials or work parts from one

to another. Many of these tasks are relatively simple: robots pick up parts from one conveyor and place them on another.

Other transfer operations are more complex, such as placing parts in an arrangement that can be calculated by the robot.

Machine loading and unloading operations utilize a robot to load and unload parts. This requires the robot to be equipped with a gripper that can grasp parts. Usually the gripper must be designed specifically for the particular part geometry.

In processing operations robot manipulates a tool to perform a process on the work part. Examples of such applications include spot welding, continuous arc welding and spray painting. Spot welding of automobile bodies is one of the most common applications of industrial robots. The robot positions a spot welder against the automobile panels and frames to join them. Arc welding is a continuous process in which robot moves the welding rod along the welding seam. Spray painting is the manipulation of a spray-painting gun over the surface of the object to be coated. Other operations in this category include grinding and polishing in which a rotating spindle serves as the robot’s tool.

The third application area of industrial robots is assembly and inspection. The use of robots in assembly is expected to increase because of the high cost of manual lab our. But the design of the product is an important aspect of robotic assembly. Assembly methods that are satisfactory for humans are not always suitable for robots. Screws and nuts are widely used for fastening in manual assembly, but the same operations are extremely difficult for a one-armed robot.

Inspection is another area of factory operations in which the utilization of robots is growing. In a typical inspection job, the robot positions a sensor with respect to the work part and determines whether the part answers the quality specifications. In nearly all industrial robotic applications, the robot provides a substitute for human lab our. There are certain characteristics of industrial jobs performed by humans that can be done by robots:

1. the operation is repetitive, involving the same basic work motions every cycle,

2. the operation is hazardous or uncomfortable for the human worker (for example: spray painting, spot welding, arc welding, and certain machine loading and unloading tasks),

3. the work piece or tool are too heavy and difficult to handle,

4.the operation allows the robot to be used on two or three shifts.

Дополнительный словарь:

Transfer – передача, перенос spot welding – точечная сварка

Location – местонахождение continuous – непрерывный

Pick up – брать, подбирать spray painting – окраска распылением

Arrangement – расположение spray-painting gun – распылитель краски

To utilize – утилизировать grinding – шлифование

находить – применение polishing –полирование

Gripper – захват manual –ручной

To grasp – схватывать Lab our – труд

Frame – рама Shift – смена

2. Answer the questions:

1. How are robots used in manufacturing?

2. What is <material handling>?

3. What does a robot need to be equipped with to do loading and unloading operations?

4. What does robot manipulate in robotic processing operation?

5. What is the most common application of robots in automobile manufacturing?

6. What operations could be done by robot in car manufacturing industry?

7. What are the main reasons to use robots in production?

8. How can robots inspect the quality of production?

9. What operations could be done by robots in hazardous or uncomfortable for the human workers conditions?

3. Translate into English:

1.Существует несколько различных сфер использования автоматизации в производстве.

2.Для использования жесткой автоматизации необходимы большие инвестиции.

3.Жесткая автоматизация широко используется в химической промышленности.

4.Станки с числовым программным управлением - хороший пример программируемой автоматизации.

5.Гибкая автоматизация делает возможным перепрограммирование оборудования.

6.Время простая оборудования оборачивается большими убытками.

7.Использование гибкой автоматизации делает возможным производство разнообразной продукции.

СРС 2

Read the text: Transmission Technology

Most transmission — at least most transmission in the local exchange plant — is analog in nature. That is, the signal being transmitted varies continuously, both in frequency and in amplitude. A high-pitched voice mostly contains high frequencies; a low-pitched voice contains low frequencies. A loud voice contains a high-amplitude signal; a soft voice contains a low-amplitude signal.
En the long-distance network, and more and more in the local exchange plant, digital transmission is being used. A digital signal is comprised of a stream of is and Os that portray the analog voice signal by means of a code.
Analog signals can be combined (i.e., multiplexed) by combining them with a carrier frequency. When there is more than one channel, this is called frequency division multiplexing (FDM). FDM was used extensively in the past but now has generally been replaced with the digital equivalent: time division multiplexing (TDM). The most popular TDM system is known as tier I (Ti). In a TI system, an analog voice channel is sampled 8,000 times per second, and each sample is encoded into a 7-bit byte. Twenty-four such channels are mixed on these two copper pairs and transmitted at a bit rate of 1.544 megabits per second. Ti remains an important method of transmitting voice and data in the PSTN Such a digital transmission scheme (and certainly there are modifications of it that improve efficiency, capacity, or quality, etc.) works hand in glove with the digital-switching schemes we talked about previously. Those Is and Os need not be transmitted through an actual circuit in that switch; rather, one can simply turn on and off the various electronic devices that make up that switch.
Thus a talking path (i.e.. a switched circuit) in the PSTN can be either analog or digital or a combination thereto En fact, a digital signal can be transmitted over a packet-switched network as easily as a circuit-switched network. Now if we consider the next step, we see that digitized voice is not very different from data, and if data can be transmitted over a packet network, then so can digitized voice. This, of course, is now known as voice over the Internet. The challenge, of course, is to get the transmitted signal to the destination fast enough. After all, this may well be a time-sensitive voice conversation. A second challenge is to get each packet, which is a small piece of a voice conversation, to the destination in the proper order. Progress is being made, and we can well believe that packet switching will play an important role in the PSTN of tomorrow.

2. Read the text and answer the following questions.
1. What kinds of transmission are used in local exchange plants and in long- distance networks?
2. What is the most popular TDM system? Describe it.
3. What kinds of a talking path are in the PS1’N?
4. How can a digital signal be transmitted?
5. What challenges are given in the text?

Дата добавления: 2015-11-14