文献翻译开发一个混合的可编程的逻辑控制器成为一个柔性加工系统平台.docx

1、文献翻译开发一个混合的可编程的逻辑控制器成为一个柔性加工系统平台翻译部分Developing a Hybrid Programmable Logic Controller Platform for a Flexible Manufacturing SystemKENVINJ.MCDERMOTT AND WENLONG ALBERT YAONew Jersey Institute of Technology, Newark, NJ 07102Abstract in this article, we act according to the programmable logical control

2、 electric circuit and the personal computer based on (personal computer machine) visual person - machine connection (MMI) and the data collection (direct action) the unit, designs and carries out a nimble processing system (flexible processing system) the implementation to control the platform. The

3、flexible processing systems essential aspect lies in it to adapt in the operating process flexibility. The programmable controller provides the feasible solution flexibility processing system application the method, uses based on personal computers MMI/DAS, relies on the programmable logical control

4、ler to apply rapidly in the execution sequence control policy. With manages front end MMI/DAS the personal computer machine to make the visual operation contact surface, fills the powerful graph and the report tool. May or uses from personal computers information by a companys local area network the

5、 client - server technology to assign. At present, because has for the microcomputer technology and software programming technology foundation gathering, many users will discover that the programmable logical controller will be one saves the cost in the middle and small scale factory real-time contr

6、ol process the method, when particularly the use mixing method will supervise personal computers time. This articles main goal lies in the certificate programmable logic controller to rapid and the repeated control duty sensitivity, and to use the personal computer machine to provide the information

7、 automation the flowing and to accept the operator to operate the intention, therefore, is also provides for the user along with the request change, but changes unceasingly a monitoring process tool. 1. Introduced That in many kinds of product manufacturing industries, the production automations for

8、m is also flexible processing system (FMS) first proposed in the 1970s. After flexible processing systems appearance enhancement labor productivity, flexible processing systems quantity large scale growth (Gruver and Zimmers1984). The entire world as a result of global competitions enhancement, the

9、production cycle reduces gradually, and the production cost increases day by day usual, the flexible processing system is composed of group of machines or another automated workstation, forms standardized the subsystem, for example numerical control machining center, robot, vision system and a proce

10、ss station and so on. And this material handling system interconnection usually (Malek1991) actuates through a computer. Each standardizations system needs a standardized the control system, its different spare part by single controller. All standardizations subsystem looked like in the past equally

11、 by the computer control. These controllers carry out their task under a higher horizontal controllers surveillance. To the system, two control devices and the information flow needs to automate. The flexible processing systems essential aspect lies in its ability to change along with the control du

12、ty. This flexibility can produce the components type including it quantity and the type, the executive command, as well as improves the partial routes to flow ability. Finally, the control platform should have ability to cause the information flowing automation。Usually, some 3 kind of control platfo

13、rm uses in the flexible processing system: Minicomputer, miniature electronic accounting machine and programmable logical controller (Malek1991). The minicomputer is very suitable complex, large-scale, continual, rules and regulations control application. The programmable logical controller uses in

14、rapid and the repeated logical control. The personal computer (personal computer) is suitable for the man-machine interface function. First, the programmable logical controller replace relay, for in the industry environment inland transportation extension, it may easily by workshop engineer and the

15、attendants, is serviced by the factory electrician. At present, because has the microcomputer technology and software programming technology foundation gathering, many users will discover that the programmable logical controller will apply in the middle and small scale factory real-time control proc

16、ess is saves the cost method, when particularly the use mixing method will supervise.This articles goal lies in the processing flexibility processing systems modernized technology. Proposed that the design and the data-acquisition system direct action the flexible processing system which and the per

17、sonal computer controls for the programmable logical controller based on the visual person - machine connection (MMI) construction. Its structure is as follows: The first 2 parts start from the flexible processing systems description to introduce in the New Jersey engineering institute (NJIT) factor

18、y center level manufacture system. 3rd part of description flexibility processing systems operation. 4 parts and 5 parts demonstrated is the present programmable logical controller control and the personal computer gives the flexible processing system according to MMI/DAS in the NJIT application. 6

19、parts contain this programmable logical controller control and the personal computer the flexible processing system application superiority according to MMI/DAS the outline2. Flexible processing systems description 1.One about flexible processing system developments viewpoint as shown in Figure. It

20、is composed of the following several parts: (Mac and Kamisetty1991; Mat, 1987). the S1 processing transmission system it is composed of 4 vehicles, A, B, C and D, the fixed equipment installs above each, to each workstation transportations two shift table, TT, TT2 and double feed way material.Proces

21、ses system to develop a mix nimbly programmable logical controller platform the NASA 11 numerical control milling machines, the milling machine makes each different part according to the computer control. General Electric Company P50. A sharing robot uses for to load and unload as well as delivers i

22、n the numerical control milling machine and between the transporting stands and transports. It contains 5 computer programs which assigns by the programmable logical controller. The computer program control robot loading places delivers between the system and the car as well as the numerically-contr

23、olled machine tool and cars material. Finally two procedures are accepting or the rejection components complete. The part delivers stands this station including a gravity slanting slot, provides the unfinished raw material. This station also contains two type warehouses one accepts components reject

24、ion components computer vision system. The vision system provides the visible self-supervisory part. It is the menu actuation, 64 step density steps edge detection system. Drill hole machine has the automatic drill hole function IBM 7535 industry robot in brief, the flexible processing system has tw

25、o kind of robots; first, the numerical control milling machine, another is the material shift expulsion system, supervises including the van and the limit switch and by General Electrics six programmable logical controller, by based on personal computers machine visual MMI/DAS monitoring vision syst

26、em.3. operation description the flexibility processing systems action cycle carries on by the following way: (1) At first, transporting systems all four vans are spatial may use for raw material to install to deliver the station. the .(2)GE robot will put one after the other these four parts was swi

27、ndled when these four vehicle laying aside material to these four vans they along the clockwise migration. Above first step and the second step is the flexible processing systems loading part.( 3) chart 2 demonstration is once after these four different parts are loaded the position which is accepte

28、d by four vans.(4) the van stops when the drill hole machine, the IBM robot drills various holes on the different surface. (5)GE robot transfers to the van, moves once more components vehicle on to X position, and loads into it located at on the numerical control machine tables fixed equipment.(6) t

29、he spare part is installed on the numerical control milling machine, these robots withdraw, milling machine milling these request part.(7) milling finished, the machinist moved from the milling machine fixes on milling machines spare part.(8) the robot places the end product on the identical transpo

30、rt vehicle.( 9) signal transmits to the visible photography examination part. (10) The signal direction robot accepts the components or the rejection components signal. (11) Robot moves a receive procedure, and the laying aside components or move a rejection procedure in a receive vessel to lay asid

31、e the components in a rejection vessel. (12)Robot to the components stands, and loads into new components the vehicle .Vehicle is issued the system, next circulation start step 3 arrive 13 step.(13) steps forms a flexible processing systems operating cycle.4. uses the programmable logical controller

32、 to control set of flexible processing system the flexibility processing systems control systems important characteristic to be as follows: Because systems trapezoidal chart logic capability system easy to form, and can adapt the change; By the similar way, the system is relatively easy to the proce

33、dure and the material; The system easy maintains, and overhauls reduces, because the online diagnosis may provide and point out the question then reduction service accurately; Obviously, the system is easy and computer connection. The programmable logic controller widely uses a multi-purpose industrial used computer in the industrial da