電動機控制中英文對照外文翻譯文獻

1、 電動機控制中英文對照外文翻譯文獻電動機控制中英文對照外文翻譯文獻(文檔含英文原文和中文翻譯)原文：Control of Electric winchFor motor control, we know the best way is to use the style buttons to movethe many simple manual console. And this console, in some applications may still bea good choice, as some complex control headache can also be used. T

2、his articledescribes in your design, build or purchase winch controller, you have the motorsbasic electrical equipment and you will need to address the user interface commandaddressed.First, the manual should be a manual control console type, so if you removeyour finger buttons, hoist will stop. In

3、addition, each control station equipped withan emergency need to brake, hoist the emergency brake to cut off all power, not justthe control circuit. Think about it, if the hoist at the stop, it did not stop, you do needa way to cut off the fault line protection power. Set the table in the control of

4、 a keyoperated switch, is also a very good idea, especially in the line leading to the 電動機控制中英文對照外文翻譯文獻starter toggle switch inside the elastic recovery process to deal with more problems,rather than tripping device or a hand-off the current contacts.A necessary condition for speedOf course, the sim

5、ple fixed speed starter is replaced by variable speed drives.This makes things start to get interesting again! At a minimum, you need to add aspeed control dial operation platform. Joystick is a better user interface, because itmakes you move parts of a more intuitive control.Unfortunately, you can

6、not just from your local console to send commands tocontrol the old variable speed drives, in addition, you can not want it in the initialstages, will be able to enhance the safe and reliable and decentralized facilities. Mostof the variable speed drive can not achieve these requirements, because th

7、ey arenot designed to do upgrading work. Drivers need to be set to release the brakebefore the motor can generate torque, and when parking, that is, before therevocation of torque, the brake will be the first action.For many years, DC motors and drives provide a number of common solutions,such as wh

8、en they are in a variety of speeds with good torque characteristics. Formost of the hoist of the large demand for DC motor is very expensive, and that thesame type of AC motor than the much more expensive. Although the early AC drivesare not very useful, as they have a very limited scope of applicat

9、ion of the speed, butproduced only a small low-speed torque. Now, with the DC drives the developmentof low cost and a large number of available AC motors has led to acommunication-driven revolution.Variable speed AC drives in two series. Frequency converter has been widelyknown and, indeed, easy to

10、use. These drives convert AC into DC, and then, and thenconvert it back to exchange, the exchange after the conversion is a differentfrequency. If the drive produced the exchange of 30Hz, 60Hz a normal motor will runat half speed. Theoretically, this is very good, but in practice, this will have a l

11、ot ofproblems. First of all, a typical linear motor 60Hz frequencies below 2Hz 3Hz area orthere will be errors, and start cog (that urgent push, yank), or parking. This will limityour speed range lower than 20:1, almost not adapted to the operational phase ofthe fine adjustment. Second, many low-cos

12、t converter is not able to provide therated torque at low speeds. Use of these drives, will result in the rapid move toupgrade the components or complete failure, precisely, when you try to upgrade astable scientific instruments, you do not want to see this situation. Some newinverter is a closed-lo

13、op system (to get feedback from the motor to provide a moreaccurate speed control), and the motor will work quite well.Another series of AC drives is the flow vector type drive. These componentsrequire installation of the spindle motor encoder, encoder makes use of these drives 電動機控制中英文對照外文翻譯文獻High-

14、end controllerFor complex transmission, the controller became complex, more than speed,time and location control. They include complex instructions to write and record themovement contour, and the processing can immediately run the ability tomulti-point instructions.Many large opera house is toward

15、the direction of point lift system, where eachone is equipped with a rope to enhance independent winches, rope equivalent tothose of each dimmer circuit. When more than one hoist is used to enhance theindividual part, the hoist must be fully synchronous, or the load to shift, so will leadto a separa

16、te winch becomes the risk of overload. Control system must be able to beselected to keep pace winch, or a hoist winch is not able to maintain synchronizationwith the other, can provide the same high-speed parking capacity. For a typicalspeed of 240 ft / min and a winch to maintain the rate of error

17、of between 1 / 8points of equipment, you only have less than three microseconds of time to identifyproblems and try to correct the error The hoist speed, make sure you fail, you startall the winch stop the group. This will require a large amount of computation, fast I /O interface, and easy to use t

18、o write software.For large rope control system has two very different solutions. The first is to usea separate console, the problem in general terms, this console should be installed inthe appropriate location of the operator perspective. However, this not only fromone angle to another angle, but st

19、ill can not get an instruction to another instructionfrom the control. These difficulties have been partially resolved. Installed in differentlocations through the use of video cameras, and these cameras connected to thethree-dimensional display graphics, these graphics enables the operator to obser

20、vefrom the perspective of any of the three coordinates in the expected direction ofrope movement. These operators can make from a console for him at the actualangle, or closed circuit camera practical perspective, to observe the movement ofthe rope on the screen. For the complex interrelated moving

21、parts, makes theimplementation of the above observation Failure to control and find out easier.Another solution to the problem is a distributed system that uses multiple lightconsole. This will allow the different operators in the same way the different aspectsof control gear, we have improved the m

22、anual control device. A vivid example is theflower in a vegetable market in central London, the Royal Opera House, the programuses the above, where the control console 240 with ten motors. Each console hasfive playback device, and has been open, so that each motor has been assigned to asingle consol

23、e. An operator and a console can control all the devices, however, oftenmay be running a console platform screen upgrade, another console is a console onthe transmission device, and the third console is used to the necessary background in the background image down. 譯文： 電動機控制中英文對照外文翻譯文獻控制定速電動機對于一臺定速卷

24、揚機的實際控制設備是一臺三相起動器。電動機的轉向被反向，是通過簡單的開關控制相序從 A-B-C 變換到 C-B-A。這些動作被完成，是通過兩個三磁極式電流接觸器，而且它們是互鎖的，所以，它們不可能被同時關閉。NEC 公司要求同時擁有過載和短路保護裝置。為了保護電動機免受由于機械過載引起的過熱的影響，在起動器內要安裝熱量過載延遲裝置。當熱量過載延遲裝置過熱時，它所擁有的雙金屬長條斷開電動機的電源。除此外，還可以選擇一臺電熱調節(jié)器可以用纏繞的方式安裝在電動機上，它可以用于監(jiān)控電動機的溫度變化。對于短路保護，我們一般是通過電動機常用的熔斷器來實現(xiàn)的。一臺獨立的線性電流接觸器，被配置的電流接觸器應該超

25、過主回路的電流接觸器，從而達到冗余的目的。這臺電流接觸器是由安全電路來控制的，如：緊急制動和越程極限。我們可以使用限位開關來實現(xiàn)上述的操作。當你到達正常的行程極限位置末端時，卷揚機就會停車，并且你只能夠向相反的方向移動卷揚機(即遠離極限位置的方向)。這里也需要一個越程限制以防萬一，由于電氣的或者機械的問題，而使卷揚機的運行超過正常的極限位。如果你碰到越程限制器，線形電流接觸器就會打開，因此，卷揚機將無法被驅動超過這個極限位置。如果上述情況發(fā)生，就需要請專業(yè)的技術人員來檢查導致碰到越程限制器的具體原因。然后，你就能夠用起動器內部的彈力恢復撥動開關來處理越程的問題，而不是使用跳閘器或是手工切斷電流接觸器。變速的必要條件當然，簡單的定速起動器被變速驅動器所取代。這就使事情開始變得有趣起來了！至少，你需要在控制操作臺上增加一個速度表盤。操縱桿是一個較好的操作接口，由于它使你對部件的移動有一個更直觀的控制。不幸的是，你不能僅僅從你的本地控制臺去發(fā)命令控制老式的變速驅動器，此外，你不能希望它在初始階段，就能安全而可靠的提升與下放設備。大多數的變速驅動器不能實現(xiàn)上述的要求，因為它們并不是設計用來做提升工作的。驅動器需要設置成在制動器松開之前，就能夠在電動機上產生扭矩，并且，當停車時，即在扭矩撤銷之前，制動器將先動作。 電動機控制中英文對照外文翻譯文獻(基于 PLC 的控制