Материал: 2177
Tape Guided
Many light duty AGVs use tape for the guide path. The tapes can be one of two styles: 15) ___ or 16) ___. A specific guide 17) ___ is used to follow the path of the tape. A tape guidance system is 18) ___ in comparison with the wire guided system and can be easily 19) ___ and relocated if the course needs changing. It also does not involve the expense of cutting the factory or warehouse 20) ___ for the entire travel route. Additionally, it is considered a “21) ___” system since it does not require the guide medium to be energized as wire does. 22) ___ tape is initially less 23) ___, but lacks the advantage of being embedded in high traffic areas where the tape
may become 24) |
or dirty. A flexible magnetic bar can also be embed- |
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ded in the floor like wire but works under the same provision as magnetic |
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tape and so remains un-powered or passive. |
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Laser Target Navigation |
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Over the years the technology has become more 25) ___ and today |
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automatedиvehicles are mainly Laser navigated, e.g. LGV (Laser Guided |
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Vehicle). In an automated process, LGVs are programmed to 26) ___ with |
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other robots to 27) |
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product is moved smoothly 28) ___ the warehouse, |
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whether it is being 29) |
for future use or sent directly to 30) ___ areas. |
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The wirelessбnavigation is done by mounting retro 31) ___ tape on walls, |
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poles or machines. The AGV carries a laser 32) |
and receiver on a ro- |
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tating turret. The laser is sent off then received again the angle and (some- |
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times) distance is automatically 33) |
and stored into the AGV’s 34) |
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___. The AGV has a reflector 35) |
stored in memory and can correct its |
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position based on 36) ___ between the expected and received measure- |
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ments. It can then navigate to a destination target using the constantly up- |
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dating position. |
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How many mistakes have you done?ДWhat are they? |
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What were the most difficult tasks for you? Why? |
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Lesson 18
Refresh the words in Ex. I (Lesson 1 – 17) and get ready to have a dictation.
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I. Listen and repeat. Using the dictionary, write in the [træn'skripSn] |
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of the words into the table below. |
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1 |
revolutionize |
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производить революцию |
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2 |
rearrange |
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менять, переустраивать; транс- |
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формировать |
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3 |
software |
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программное обеспечение (ПО) |
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4 |
estimator |
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оценщик; сметчик |
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5 |
simulation |
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программное обеспечение моде- |
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software |
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лирования |
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6 |
иsequence ……………… |
последовательность; ряд |
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7 |
prevent |
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предотвращать |
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8 |
interfere |
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мешать |
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determine |
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определять, устанавливать |
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10 |
impactб……………… |
сильное воздействие; влияние |
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11 |
schedule |
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график, программа; каталог; |
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опись, реестр |
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due |
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должный, соответствующий |
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forecast |
………………Апрогнозирование |
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utilization |
……………… использование, употребление, |
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утилизация |
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15 |
visualize |
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отчётливо представлять себе |
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II. Find the words in the text and translate the word combinations with these words.
III. Work in pairs.
Refresh all the Grammar material you have studied. Use the words from Ex. I to make up 5 questions based on different grammar rules and let your partner answer them.
IV. You are to read the text “Control system”. What do you expect to know after reading? Write down your ideas and then read the text.
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CONTROL SYSTEM
Computers have revolutionized manufacturing. They gave manufacturing engineers control over events in the factory. With this information, processes can be reorganized for maximum efficiency and production steps
can be rearranged for maximum cost savings.
СSoftware. Computers cannot run without software; that is, without some instructions on what to do. Software controls the flow of information in a computer system. The software makes a computer a specific device – a
Because of computers tasks are done more quickly and accurately. It enables engineers to make changes or corrections that will utilize equip-
ment and people optimally.
An important quality of computers is that they are flexible. Change
иSimulation software is another type of software which is now becoming quite popular. This type of software lets you see your proposed factory
the program and you have a “new computer”.
mated workбcells, manufacturing systems and factories such as FMS.
calculator, a designer, a programmer, a cost estimator, an expert.
layout at work “on paper”.
The main problemsАthat FMS software should solve are as follows:
Simulation software helps in the design and development of auto-
An FMS without software is not flexible, has little use in man-
ufacturing and is not even a system.
- Keeping track of the materials being manufactured, determining the exact physical location in the system and performing the correct sequence of operations.
- Preventing the different operations from interfering with each other. - Determining error conditions and minimizing their impact on the sys-
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- Keeping management informed on parts, production, part pro- |
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gramming, and system status. |
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- Determining the best production schedule to meet due data and max- |
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imize machine utilization.
- Forecasting system needs at due time – fixtures, tools, lubricants and coolants.
- Directing in real-time the operations of people in charge of the above facilities. Comparing actual and forecast performances.
- Informing the plant management with the required data from FMS, for production planning and control, accounting and reporting.
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Thus, the FMS control system manages the total combination of devices in the system that contributes to the automatic operation of the production process. This includes the machine-tool controllers, the material handling system, the system monitoring devices, the system communications, and finally the system computer. Computer software supplies all the
Сcontrol management and monitoring functions that enable the system to achieve high utilization.
The control system is easily visualized by considering all the elements of the system in a structured arrangement according to its function.
Have you found out everything you wanted? If not, try to do it using the Internet. Share your findings with your groupmates.
V. Work in pairs. Are the statements true or false?
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Different tasks are performed much faster due to computers. |
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2.иSoftware is the “feet” of computers which they use to be able to run. |
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An FMS is not a flexible system. |
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4. FMS software should forecast system needs, determine the best produc- |
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tion schedule, and increase impact of conditions on the system. |
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The FMSбcontrol system manages various other systems. |
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6. It is not recommended to rearrange production steps as it is very expen- |
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sive. |
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VI. Find the best continuation to the following ideas. |
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1. Computers make … |
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2. |
Software controls … |
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3. |
Software lets … |
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Software should … |
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5. The FMS control system managesД… |
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VII. Read the following article and answer the questions: |
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What is simulation? |
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What is the purpose of simulation? |
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Where can simulation be used? |
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IX*. Think of 3 examples of simulation usage and discuss them with |
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your groupmates. |
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X. Work in groups of 4 – 5. Tell one statement about an FMS control |
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system, one by one, to make a story. |
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XI. What were the most difficult tasks for you in this book? Why? Make a list of problems that prevent you from studying English for specific purposes. Analyze them and think of possible solutions.
Problem |
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Go to Lesson 2 and look through the list of problems you made that time. Has anything changed? Which way?
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