Condition of instrument of large a favourable turn coming back monitors the object-oriented research building a model that diagnoses a system with breakdown

500 million yuan. To avoid and reduce the happening of breakdown of group of large scale computer, the manpower material resources with each devoted and many national capital undertakes failure mechanism and breakdown diagnose technical research. On these foundations that study positive result, each research unit is aimed at different application development a few breakdown diagnose a system, some diagnosed a system to promotion application is produced at industry and had obtained very good economic benefits, be like system of the 3300 systems of Bently Nevada company of the United States, TDM, DDM, system of the TurbinAID of Westinghouse Electric Corporation, GenAID, ChemAID [2] , domestic Harbin Institute of Technology, tsinghua university, Xi'an traffic university, Zhejiang university, China in the breakdown that manage is versed in the unit such as the university is developed respectively diagnoses a system. These systems become industry to the enterprise decreases effectively and avoid the main measure that breakdown of group of large scale computer produces in the application of industrial spot. Mechanical failure diagnoses the demand that has two sides: It is to discover fault, decide namely breakdown happening; 2 it is the position that identifies breakdown happening, type, property, serious degree. Accordingly, breakdown diagnostic system is relative this double-dealing the requirement also should have condition to monitor the function that diagnoses two respects with breakdown, the organic knot that is these two functions is fit. The breakdown that studies development domestic and internationally at present diagnoses a system (include to already promoted the product to the market) will divide from the function, can divide what give priority to to be analysed in order to be based on signal processing and data to monitor model system, be like the M6000 of company of the 3300 systems of Bently Nevada company, Atlanta, diagnose with the intelligence that is based on knowledge model system, the 501 systems of system of the TurbinAID that is like Westinghouse Electric Corporation, GenAID, ChemAID and IRD company. But the development process that diagnoses a system to breakdown at present undertakes relatively comprehensive analysis, the document that builds a model does not see more, because this is aimed at breakdown to diagnose the requirement of these two respects of the system, mature monitor with diagnose two functions, use object-oriented technology, to breakdown diagnostic system undertakes the analysis of sufficient system, the information model that builds breakdown to diagnose a system, dynamic model and functional model, the development that diagnoses a system for breakdown of group of large scale computer provides academic basis. Law of 2 object-oriented analysises is object-oriented analytic method (Object-Oriented Analysis, abbreviation OOA) is integrated the function decomposes method, data to shed analytic law and information model law a few advantages of 3 kinds of methods, a kind of when rise new analysis method develops after uniting these advantages with object-oriented concept. It is a kind of when people uses object-oriented method at systems analysis and arise new methodology. The concept of OOA is Shlaer, s.

With Mellor, s.

Put forward 1988 [4] , be in research and development phase at present [5, 6] . Object-oriented analysis method is to build the thinking in him mankind to organize the method of a kind of analysis over mode. In traditional analytic method, arrive from problem space analytic result (namely systematic model) map is indirect, the thinking pattern that one of reasons analyse personnel place to use namely and the thinking mode presence that design personnel uses are apart from certainly. From go up at all the mankind's original thinking is used to organize mode in each link that the method of unified thinking mode develops in the system namely. Object-oriented analysis method is to build in him mankind on the foundation of thinking mode, objectively, the method of a kind of analysis that naturally uses objective world's original rule to develop applied system. Object-oriented analysis method can use below posture expresses: The communication that ＋ of object of ＝ of object-oriented analysis method classifies ＋ inheritance ＋ to be based on a message among them, a group of attribute that are enclosed to seeming and have a service only, it is an abstraction of some kind of thing in problem space, also contain a certain number of example of this kind of thing in problem space at the same time. After object-oriented analysis method is put forward in 80 time end, got rapid development. Method of object-oriented now analysis basically has two kinds, it is the object-oriented analysis means that Shlaer and Mellor offer [4] , this kind of method basically is tectonic 3 formalization model, namely information model (Information Model) , dynamic model (State Model) and functional model (Process Model) . Another kind is the object-oriented analysis means that Coad and Yourdon offer [3] , combined traditional analytic method and object-oriented feature, basically comprise by 5 measure: The cognizance of the object; Structural cognizance; Thematic cognizance; Attribute and the definition with associated example; Serve the definition with message correlation. The object-oriented analysis of 3 breakdown diagnostic system and build a model 3.

1 breakdown diagnoses the breakdown that systematic demand analyses to diagnose a system is one faces chemical industry high speed the online condition that large a favourable turn coming back fetterses is monitored and breakdown diagnoses a system (abbreviation M&D) . Signal of the craft parameter such as 17 signal of temperature of 12 oscillatory signal that this system needs to control unit to steam and its peak peak value, 17 plain bearing liner, pressure and discharge and 24 switch quantity undertakes online real time is collected, put store, show. To raise the accuracy that breakdown diagnoses, can oscillatory to 12 signal implements system of special still requirement the whole periodic sampling of dynamic signal keeps abreast of a real time spectrum; To realize accident recall function of the system, the system still must be had " black box " function. To realize these functions, the system uses fluctuation the means that computer machine synchronism works has the job. The indication of signal of the collection that issues a computer to basically be in charge of aircrew signal, static state and one part warning function (monitor) ; Go up of a data that the computer is in charge of breakdown diagnosing a system put analysis of lay aside, signal, breakdown to diagnose wait for the job. On, issue a computer to undertake through the network news news report and data are transmitted. The object-oriented analysis means that we offer with Shlaer and Mellor [4] to going up the breakdown of a machine diagnoses a system to undertake an analysis, build information model of the system, dynamic model and functional model. 3.

The model of information model information of 2 systems described the boy or girl friend in the system make known one's position the relation between structure and object. The global survey that information model offers substance of concept of problem of a research with chart form (view) . Each pane in graphical expression related to an object couplet. The object names with the name that researchs a field, give aleatoric grade. Every object attribute uses an asterisk or the discriminative sign with similar other marks. The relation between the object is described in model attempt with the line. Each concern indicates with phrase of a verb, also come with a grade to facilitate the record concerns each times mark. Object model also has particular administrative levels concern because of the administrative levels relation of the object. What classify degree as the object is different, the message that object model place conveys is different also. Yuan of object model of the system gives out only in the article, this is main core of the system. As object administrative levels decompose gradually, target information content is abounded gradually, elephantine model of the system is more and more specific also, till can till the systematic object model that the computer language realizes. Condition of instrument of large a favourable turn coming back monitors the information model that diagnoses a system with breakdown intelligence, if pursue 1 show. Graph instrument of 1 large a favourable turn coming back is monitored in line position no matter,diagnose systematic information model with breakdown static data, still be dynamic data, it is token the physical quantity of moving condition of instrument of large a favourable turn coming back, deposit by time order inside the database, facilitating analysis and diagnostic breakdown cause of formation. Library of file of database of library of database cent day, week library, month library, black box, trend and diagnostic database 6 stature libraries. As a result of the special requirement of the manufacturer, primitive undee data is deposited in database of day library, week library, month library, black box, trend data and diagnostic data are deposited in trend file library and diagnostic database. The data in day library, week library, month library undertakes by certain principle rare change. Data is rare the fundamental that change is: Know exactly about sth of the place in day library saves a group of data according to every 4 seconds; In week library every 2 minutes save a group of data; In lunar library save a group of data 15 minutes every. Black box library protects existence breakdown to produce hour around each 100 groups of data. The trend data of the special frequency that signal of all static state and dynamic signal deposit in trend file library; And the amplitude that diagnostic database deposits main frequency and phasic information. Graph the method that signal of 1 middling compasses analyses basically includes bar chart, spectrum graph, cascade graph, fall plan, baud graph, polar coordinates graph, orbit graph, time base graph, orbit graph and trend graph. Condition calls the police is the system is used multilayer perception implement nerve network is in to aircrew all static states of normal time and dynamic signal undertake study, next the moving position that the network uses acquired knowledge to judge current hour aircrew is normal. Groovy breakdown diagnostic principle and condition call the police basically same. Typical breakdown is to point to what send more here, common breakdown. According to the circumstance in the factory, this kind of breakdown basically includes: Axial of lopsided, rotor is touched rub, incorrect eddy of medium, oily film is moved, inferior humorous resonance, bearing and Feng Wasong are moved, eddy of thrust bearing attaint, vapour is moved, bearing becomes loose and differ bearing stiffness. The diagnostic knowledge that nerve network sums up to the real data of these breakdown and forefathers undertakes study, the diagnostic knowledge store that gets study is in authority matrix, use these knowledge to undertake diagnostic to the current condition of aircrew. Intelligent breakdown is diagnosed is to use the knowledge in the knowledge base to undertake diagnostic to the moving condition of aircrew. The diagnostic knowledge in the knowledge base is organized with the form of the object. The knowledge that breakdown includes to diagnose a need in intellectual object (code of network of generation type regulation, nerve, gene is regular) , get breakdown feature place the processing technique of necessary analytic method and inferential control and breakdown. Breakdown intelligence diagnoses the root node from breakdown to begin, according to the object medium inference controls to eventually node (final can the breakdown of fractionize) undertake. The node that can arrive finally diagnoses the conclusion that come out namely (breakdown) . Diagnostic system must have diagnostic knowledge to get a function automatically (machine study) ability realizes ego to perfect in applying actually. What knowledge diagnoses in this system is automatic get basically comprise by two parts: It is to pass the example that nerve network provides to the system to undertake study, another part is to use the gene algorithm study to systematic example. 3.

The condition model of the dynamic model system of 3 systems described all sorts of elements in the system of constant change. Condition model uses demonstrate and the control ingredient that implement a system. Condition model shows with state diagram, if pursue 2 show. State represents with node in the graph, mark with the number, represent the change between the condition that sparks by incident with arc, arrowhead direction represents the way that incident sparks. Graph the analysis with the condition object-oriented model of 2 systems assumes all objects have a lifecycle. A lifecycle is comprised by a few phase. Want to appoint the natural criterion of object example behavior in specific level. Lifecycle includes an object to be in the different position of different life period. The condition that developing is monitored in diagnosing a system with breakdown, the object lifecycle when the process moves automatically by following composition of a few phase: 1.

Collect condition data; 2.

Write network buffer; 3.

Read take a network to collect data; 4.

Undertake data proximate analysis; 5.

Undertake breakdown calls the police analysis; 6.

Undertake typical breakdown is diagnosed; 7.

Indication analysis result; 8.

Write a database. This is the lifecycle that the function monitors when the system moves commonly. Additional, because the program below Windows environment is the system of a many process, much user, following object can move activation by user hand through user interface or according to condition analysis by the system diagnostic result activations: Recall of database inquiry, accident; Trend analysis; Litre fall fast analysis; Undertake intelligent breakdown is diagnosed; Knowledge base management; Diagnostic knowledge machine learns; The system is acousto-optic call the police; All sorts of chart printout; Interactive interface. The lifecycle of the boy or girl friend that describes above can continue fractionize, till cannot be divided again till. Graph 2 it is the condition model that instrument condition monitors the large a favourable turn coming back that builds according to afore-mentioned analysis to diagnose a system with breakdown. This model gave out the lifecycle of main target in the system. Every block diagram in the graph shows a level of object lifecycle, and of an incident that a curve that takes arrowhead gives out on behalf of the object and message deliver a route. So called incident (Event) is when developing to another phase from a phase when an example of an object or the signal that when be being transferred to another object, issues. 3.

The model of process of functional model system of 4 systems uses a specification to be worth is how calculative, and do not consider behavioral series, strategy or object model. Between value of palpability of process model watch depend on relation and relevant function (functional) . Process model just constructs after tectonic information model and condition model. Build in object-oriented analysis data flow chart can be used in the model (DFD) will show systematic function model. Data flow chart (DFD) conduces to state the function depends on a relation. The function can describe with all sorts of means: Be like natural language, mathematical posture and pseudo code. The construction of process model carries out by the following measure: Make clear value of input, output; Build the DFD that reflects function dependence to pursue; Descriptive function; Restrain a condition clearly; Optimize a standard certainly. Data flow chart is how is using a specification to export a worth worth to come from the input. DFD presses administrative levels organization normally. Most likelihood carrying a layer on the head is comprised by single course, likely also by collect input, computation value, make a kill (output) a integrated process is formed. In each DFD administrative levels, can give the function that rolls out it from output value. If also be the input of whole picture to the input of the operation, can practice recurrence law. Otherwise, some operations are the value intermediate, must dog conversely. the DFD that carries a layer on the head medium process expands the DFD of lower administrative levels pursues. If the process in graph of the 2nd administrative levels still includes a few courses that can refine, they are OK still recurrence is patulous. Graph 3 stated large a favourable turn coming back fetterses to monitor the data carrying a layer on the head that diagnoses a system with intelligent breakdown to circulate a plan in line position, offerred value of systematic input, output. According to the graph the object model of 1 is mixed graph the dynamic model of 2 is OK shed data carrying a layer on the head the graph to expand the DFD that is lower administrative levels, spread out because of what length is restricted to be not made here. Pursue the data carrying a layer on the head of 3 systems circulates a plan system of M&D of 　 of implementation of system of 4 　 M&D is one when build by 3 object-oriented models faces chemical industry high speed to the online condition that large a favourable turn coming back fetterses is monitored and be diagnosed, besides the normal configuration of the computer, a card of photograph of ancient bronze mirror of a card of processing of date of the believe before issueing a machine hardware to still include 1, intelligence, PCL-1800 collects card, 2 PCL-813 card and monitoring of signal of a switch to get stuck; Go up a machine still inside the collateral processing system that buy handles card to be core with signal of number of TMS320C25 of American Texas company together (ATD-C25AT-C) , every second can implement this system 1 ten million instruction, can make IBM-PC/AT achieves the operation rate of super and small-sized machine. The photograph of intelligent ancient bronze mirror that develops by oneself board, believe the pulse frequency of date according to ancient bronze mirror, the PCL-1800 high speed that is as high as 330K through sampling frequency is being controlled after 32 times frequency is collected board, to 12 oscillatory signal implementation does periodic sampling; 2 sampling frequency is collected for the PCL-813 of 25K board the peak of oscillatory to 12 signal - the craft parameter such as signal of 17 peak value, temperature and 17 pressure, discharge undertakes collection; Signal criterion is measured when 24 switch by switch monitoring board (develop by oneself) undertake monitoring. Go up the data analysis that the digital signal processing system with a medium machine is in charge of diagnosing systematic place to need. On, the network that leaves a computer to choose pair of dot form through NWlite undertakes news news report and data are transmitted. The real time sex that issues a machine to be monitored to improve position, use a PC to interrupt a technology, use the Borland C++ language below DOS environment and Turbo Assembler assembly language to write; Go up a machine handle to realize much task, what with the analysis the graph shows is beautiful wait for a requirement, use undertake writing with Visual C++ language below Windows environment, go up a digital signal processing in machine board (DSP) interface program is written by TMS320C25 assembly language. CNC Milling