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1、CHAPTER1THEFUZZYWORLDWhat’stheprocessofparallelparkingacar?Firstyoulineupyourcarnexttotheoneinfrontofyourspace.Thenyouanglethecarbackintothespace,turningthesteeringwheelslightlytoadjustyourangleasyougetclosertothecurb.Nowturnthewheeltobackupstraightand—nothing.Yourreartire’sw
2、edgedagainstthecurb.OK.Goforwardslowly,steeringtowardthecurbuntilthereartirestraightensout.Fine—except,you’retoofarfromthecurb.Drivebackandforthagain,usingshallowerangles.Nowstraightforward.Good,butalittletooclosetothecarahead.Backupafewinches.Thunk!Oops,that’sthebumperofthec
3、arinback.Forwardjustafewinches.Stop!Perfect!!Congratulations.You’vejustparallel-parkedyourcar.Andyou’vejustperformedaseriesoffuzzyoperations.Notfuzzyinthesenseofbeingconfused.Butfuzzyinthereal-worldsense,like“goingforwardslowly”or“abithungry”or“partlycloudy”—thedistinctionsth
4、atpeopleuseindecision-makingallthetime,butthatcomput-ersandotheradvancedtechnologyhaven’tbeenabletohandle.1FuzzyLogicAPracticalApproachbyF.MartinMcNeillandEllenThroChapter1:TheFuzzyWorld2Whatkindofproblems?Forone,waitingforanelevatoratlunchhour.Howdoyouprogramelevatorssothatt
5、heypickupthemostpeopleintheleastamountoftime?Orhowdoyouprogramelevatorstominimizethewaitingtimeforthemostpeople?Supposeyou’reoperatinganautomatedsubwaysystem.Howdoyouprogramatraintostartupandslowdownatstationssosmoothlythatthepassengershardlynotice?Forthatmatter,howcanyouprog
6、ramabrakesystemonanautomo-bilesothatitworksefficiently,takingroadandtireconditionsintoaccount?Perhapsyouhaveamanufacturingprocessthatrequiresaverysteadytemperatureoveramanyhours.What’sthemostefficientandreliablemethodforachievingit?Or,supposeyou’refilminganunpredictableandfas
7、t-movingeventwithyourcamcorder—say,abirthdaypartyof10three-year-olds.Whatkindofacameraletsyoumovewiththeactionandstillendupwithaverynonjerkyimagewhenyouplayitback?Or,takeaproblemfarfromtherealmofmanufacturingandengineer-ing,suchas,howdoyoudefinethetermfamilyforthepurposesofin
8、clusioninhealthinsurancepolicy?Doallthesesituationshavesomethinginco
