外文翻译—基于PLC的感应电动机监控系统设计与实现英文版(共4页).doc
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1、精选优质文档-倾情为你奉上Microcomponent Thickness Comprehensive Detecting Plain Test Control System DesigningZhenwei Duan Yanhua Li Denren Kong Changan DiDepartment of precision instrument of School of Mechanical Engineering in NUST, Nanjing, Phone (086) 025- E-Mail: willendzw专心-专注-专业Abstract: This article intr
2、oduces the overall plan of the testing & controlling system of the platform for testing the thickness of the microcomponent, the working principle and the design method. It introduces the driving system, controlled by the PLC programmed controlling step-motor, to accomplish the testing of microcompo
3、nent in the form of production chain. It introduces the communication and control method between the thickness-testing sensor and PC. It discusses how can the PLC controlling microcomponent material distribution machine accomplishes distribution task, when getting sort signals form PC. It discusses
4、the realization method, in which all kind of status in operating process can be tested and the fault can be tolerated. This system was debugged in industrial location and its feasibility was proved well.keywords: microcomponent, detecting,classification automatization, ManipulateMicrocomponent is a
5、critical unit in air condition and air compressor, whose geometry dimension, surface roughness, margin tolerance etc deeply effects the refrigeration and calefaction of them. Actually as the demand of air condition and air compressor are more and more vast, the demand of microcomponent is more and m
6、ore vast too and the degree of accuracy of microcomponent is more and more higher. Now after the microcomponent was machininged and producted, which was mainly detected manually, the verification became where the shoe pinches. The traditional verification method has the problem of slow velocity, low
7、 efficiency and man induced factor effect. So we developed this Microcomponent Thickness Comprehensive Detecting Plain. The Programmable Logic Controller of S7-200 catena, which is made by the Siemens and the industrial control computer are the nucleus of this topic. We combination the deeply activa
8、tion capability, the high reliability, the superior proportionaliny among the performance and the cost, the expedient application of The Programmable Logic Controller with the deeply data-processing capability, the amicable relation among man and computer, the high administration horizontal of the i
9、ndustrial control computer, then we develop this Microcomponent Thickness Comprehensive Detecting Plain Test Control System. We achieve the automatization of the examination of the microcomponent thickness and the exclusive classification process, and enhance the level of automatization, get togethe
10、r on better economic effect.I The design of the microcomponent thickness comprehensive detecting plainThe Microcomponent Thickness Comprehensive Detecting Plain is made up of the driving and measurement mechanics, the classification mechanics and the control section .In a general way, the concentrat
11、ed and decentralized system can be fallen into three tiers: the top is management who manages the whole system; the middle is concentrated supervisory who monitor, control and deploy the whole system; the bottom is decentralized- implementation, whose task is control the local system. In the system,
12、 the industrial control computer undertakes the task belonging to the top and middle as supervisory management; PLC undertakes the bottom task as control implementation tier2. The industrial control computer transfers the management decision, control task, control parameter and deploy dictation to t
13、he control tier PLC by communication cable, PLC transfers the parameter, process control and data to the management tier by communication cable. The function flowchart of whole system is as fig 1.Sort control signalSensor signalPTO outputDrive controlControl signalMeasurement plainPLC RS-485Industry
14、 control computerRS-232Sort control systemPC/PPIMotor 1Mtor2Status signalStatus signalFig 1 The overall structure of the systemA The automated detecting plainThe automated detecting plain is made up of measurement plain and the driving mechanism. Measurement plain is the basic reference of the micro
15、component s geometrical parameter, whose degree of accuracy is higher than that of the microcomponent. During the measurement process, the microcomponent slides with surface of the operating board. In order to guarantee the stationarity during the driving process, and eschew to lead in the additive
16、lapse to engender the deformation because of the shock of the driving mechanics, the driving mechanics exploits the designing of fission constitutional formula to disbranch the measurement plain and the driving mechanics, then descend the influence of the driving mechanics by a long way. We need to
17、measure five dots on the diagonal of every surface(it can be taken into one dot in the crossover). In this way, the microcomponent not only rotates 90 degree, but also rolls over 180 degree on the pipleline.By protracting favourable bandy on the measurement plain, we can make the microcomponent rota
18、te favourable angular degree according to the primary locus, and to realize the turning of the microcomponent by designing the spatial texture of the industry chain.B classification organThe microcomponent is transferred to the classification organ down the slipway. The classification organ classifi
19、es the microcomponent by virtue of controlling stepper motor to rotate homologous angular degree when the PLC accepting classification information. The PLC controls the stepp motor in the way of PTO. PTO mode can export much impulse train, and enable impulse train to queue to establish conduit line.
20、 It can be classified two enominations including single conduit line and multiple conduit line1. This system adopts the multiple conduit line, and establishs the list in variable memory block to control periodic time of output impulse and pulse number, then achieves to control the stepper motor rate
21、 and angular degree exactly.The PLC reckons heterogeneous conditions by inductive switch in the classification process. For instance, the arrival signal, the align signal, the classification completion signal. If The PLC discovers false condition, it will deliver homologous alarm signal to the indus
22、trial control computer, then the operating force can eliminate the bug.C The control sectionThe PLC is the nucleus of the control section, which carried out the command of the industry control computer by the communication of them. When the industrial control computer interfaces with PLC, because PL
23、C exploits standard RS-485, which is not compatible with the industrial control computer RS-232, we must switch over by PC/PPI communication cable2. The industrial control computer is the administrator of all the system, .It controls the sensor to measures the geometrical parameter of the microcompo
24、nent on the industry chain, and calculates to get the classification information of the microcomponent. The PLC is the manipulative nucleus of all the system, it completes the facility which includes the activation governing, the condition sense, the implementation of the dictation and so on. The PL
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