Track след; направляющее приспособление
жүктеу/скачать 464,87 Kb.
|
Бухина пособие автоматизация и управление (1) (1)
- Бұл бет үшін навигация:
- Sensors and Transducers
- Transducers
- Actuators
| UNIT FIVE
Texts: Sensors and Transducers, Source, Signals, DAQ hardware, DAQ software, Алгоритмы функционирования технологических объектов, управляемых АСУТП Grammar: The Gerund Memorize the words: To convert – преобразовывать transducer – преобразователь; датчик strain – напряжение; деформация gauge – измерительный прибор voltage – напряжение DC- direct current – постоянный ток resistance – сопротивление capacitance – емкость; емкостное сопротивление inductance – индуктивность; (само)индукция thermocouple – термоэлемент, термопара pressure – давление in response to – в ответ на stimulus – стимул; раздражитель to respond – отвечать; реагировать unlike- - непохожий на, не такой как to stand alone – быть выдающимся, непревзойденным discrete – раздельный, состоящий из разрозненных частей; дискретный Translate the text into Russian: Transducers'>Sensors and Transducers Simple stand-alone electronic circuits can be made to repeatedly flash a light or play a musical note, but in order for an electronic circuit or system to perform any useful task or function it needs to be able to communicate with the "real world" whether this is by reading an input signal from an "ON/OFF" switch or by activating some form of output device to illuminate a single light and to do this we use Transducers. Transducers can be used to sense a wide range of different energy forms such as movement, electrical signals, radiant energy, thermal or magnetic energy etc., and there are many different types of both analogue and digital input and output devices available to choose from. The type of input or output transducer being used, really depends upon the type of signal or process being "Sensed" or "Controlled" but we can define a transducer as a device that converts one physical quantity into another. Devices which perform an input function are commonly called Sensors because they "sense" a physical change in some characteristic that changes in response to some excitation, for example heat or force and covert that into an electrical signal. Devices which perform an output function are generally called Actuators and are used to control some external device, for example movement. Both sensors and actuators are collectively known as Transducers because they are used to convert energy of one kind into energy of another kind, for example, a microphone (input Sensors and Transducers and a loudspeaker (output device) converts the electrical signals back into sound waves and an example of this is given below. жүктеу/скачать 464,87 Kb. Достарыңызбен бөлісу:
|