外文文献原稿和译文原稿IntroductionIn the modern industrial control field,along with the rapid developmentof computer technology,the emergence of a new trend o fintelligent control, namely to machinesimulationhuman thinkingmode, using reasoning, deduce and induction,so the means, the production control, thisisartificialintelligence.One expertsystem,fuzzy logicand neuralnetwork is the artificial intelligence of several keyresearch hot spot. Relativeto the expert system,the fuzzy logicbelongs to the category of c omputational mathematicsandcontainthe genetic algorithm,the chaos theoryandlinear theoryetc,it comprehensive of operators practice experience,has thedesign issimple andeasy to use, strong anti-interference abilityand reaction speed,ea sy tocontrol and adaptiveability, etc. In recent years, ina process control,built to touch, estimation, identify,diagnosis, the stockmarket forecast,agriculturalproductionandmilitary sciences toawiderange ofapplications.To carry o ut in-depthresearch and application offuzzy control technology, the paperintroduces thebasic theory offuzzycontrol technology and development,andto some in the application ofthepower electronics areintroduced.Fuzzy Logic andFuzzyControl1,fuzzy logic and fuzzy controlconceptIn1965,the university of California, Berkeley, computer expertsLoftyZadeh put forward"fuzzylogic" concept,the root lies inthearea'slogic orclear logic distribution, usedto define theconfused,unable to quantify orthe problem ofp recision,for ˙ in a man'svonbased on"true-false" reasoningmechanism, and thus createa electronic circuit and integrated circuit of theBoolean algorithm, fuzzy logic to fill thegapsin specialthings insampling and analysis ofblank.On the basisof fuzzy logic fuzzy set theory, aparticular things as the set of features membership, he can be in"is" and"no" within the scop eofthe takebetween any value. And fuzzy logicis reasonablequantitativemathematicaltheory,the mathematical basis forfundamental for isto deal with thesethe statistical uncertai nimprecise information.Fuzzy control based onfuzzylogic isa processo fdescription of the control algorithm.For parameters preciselyknownmathematical model, wecan use Berd grap hor chart toanalyststhe Nyquist process to obtain th eaccuratedesign parameters.Andfor some complex system, such as particle reaction, meteorological forecast equipment, establishing a reasonable and accurate mathematicalmodel is very difficult,and for power transmissionspeedof vectorcontrol problems,although it can be measured byt he modelthat,butfor many variables andnonlinearvariation, the accuratecontrol is very difficult. And fuzzy control technology only on the basis ofthepractical experience and the operator andintuitive inference,also relies ondesign personnel an dresearch and developmentpersonnel of experience and knowledge accumulation,itdoes not needto establish equipment model,so basically is adaptive,and havestrong robustnes s.After manyyears development, therehave been manysuccessful application ofthefuzzy control theory of the case, s uch asRutherford, Carter and Ostergaardwere applied and metallurgical furnaceand heat exchangerscontroldevic e.2,the analysis method is discussedIndustrial control stabilityof the systemisdiscussedthe premise of the problem, because of the nonlinear and not to the unity of the description,make a judgment,sothefuzzy co ntrolsystem analysis method ofstability analysis has beena hot spot,comprehensive in recentyears youof scholars paper published thesystem stability analysis has these several circumstances :1), LiPuYa panov method: direct method based on the discrete t ime (D-T)and continuous time fuzzy control stabilityanalysis and designmethod, the stability condition of the relative comparis onconservative.2), sliding variablestructuresystem analysis method3),round stability criterionmethods: use sector bounded nonlinearconcept, according to the stability criterion, led to the stability of thefuzzycontrol.4),POPOVcriterion5), othermethodssuch asrelationship matrix analys is, exceed stable theory, phase-plane, matrix inequality or conve xoptimization method,fuzzyhole-hole mapping etc, detailed information and relevantliterature many, in this one no longer etc.Set Design ofFuzzy ControlThe design of the fuzzy control is a very complicated process,in general, take thedesign steps and tools is more normative.Thefuzzycontroller generaluse of the special software andhardwa re,universalhardwarechip in on the marketat present ismore, includingmain products are shownbelow. And special IC has developedveryfast,itspecial IC and softwarecont roller integratesin together.In the processof design,thedesignof thegeneral to take stepsfor:1,consideringwhether the subject by fuzzycontrol system.That is considered the routine controlmode ofmay.2, from equipment operation personnel place togetas much information.3 and selecting the mathematical model could, if use the conventionalmethod design,estimate the equipment performance characteristics.4, determinethe fuzzy logiccontrolobject.5, determine the inputand output variables.6,determine thevariables asdetermined the belonging of the range.7, confirmthe variables of the corresponding rules.8, determinethe scale coefficients.9,ifhaveaready-made, mathematical model of fuzzycontroller with already certainof system simulation, observation equipment performance,and constantly adjustrules and scale coefficientsuntilreachingsatisfaction performance. Or to design fuzzy controller.10,real-timeoperation controller, constantly adjust to the best performance.FuzzyControlApplication and ProspectAs artificial intelligence of anewresearch field, thefuzzycontrol absorb lessons from the traditional design method and other newtechnology's essence,in manyfields has madeconsiderableprogress. In the new typeof powerelectronic andautomatic controlsystem,some expertsin the linearadding theconditions ofthe poweramplifier, the application of thefuzzy control based on the servo motor control,in the fuzzycontrol syst em withthe PIDand model referenceadaptive control(MRAC)comparison proved the advantages of the method of fuzzycontrol. Fuzzy turn sentgain tuned controller viewsofthe induction motor drive system vector controlFuzzycontrol as a is the development of new technology, now inmost experts also to focus onapplicationsystemresearch, and make considerable achievement, butin the theory resea rch and system analysisor relative backward, somuch so that some scholars have questionedits theoretical basis andeffective. In view ofthiscanbe clear that the fuzzy control thecombinationof theory and practice isstillneedstobe further explored. Thedevelopment prospects are veryattractive, andin recent years,its theoreticalstudy also madesignificant progress.In thepast forty years of thedevelopment process, the f uzzycontrol alsohas somelimitations: 1) control precisionlo w,performance is not high,stability is poorer;2)theory system is not complete. 3) theadaptive ability low.Fortheseweaknesses,the fuzzy control and someothernew technology, suchas neuralnetwork(NN), genetic algorithm,and t he combination of to a higherlevel ofapplicationdevelopmentexpand the huge space.SummaryFuzzy control as a comprehensiveapplication example, in the globalinformationthe push ofwave, in the nextfewd ecades, to the rapiddevelopment of economy will injectne wvitality,the expert thinks,thenext generation ofindust rial control isthe basis of fuzzy control and neural network, and chaos theory as the pillar oftheartificial intelligence.Wi ththe fuzzycontroltheory research and further more perfect of, the scope ofapplicationofthe growingand supportingthe development and manufactureofIC,thefuzzycontrolwill be open tothe field of industrial automation development oflightapplicationprospect, but also tothevarious areas of the researchers suggestmore important task.译文引言在现代工业控制领域,伴随着计算机技术的突飞猛进,出现了智能控制的新趋势,即以机器模拟人类思维模式,采用推理、演绎和归纳等手段,进行生产控制,这就是人工智能。