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1、SpincontrolforcarsStabilitycontrolsystemsarethelatestinastringoftechnologiesfocusingonimproveddirivingsafety.Suchsystemsdetecttheinitialphasesofaskidandrestoredirectionalcontrolin40milliseconds,seventimesfasterthanthereactiontimeoftheaveragehuman.Theycorr
2、ectvehiclepathsbyadjustingenginetorqueorapplyingtheleft-or-right-sidebrakes,orboth,asneeded.ThetechnologyhasalreadybeenappliedtotheMercedes-BenzS600coupe.Automaticstabilitysystemscandetecttheonsetofaskidandbringafishtailingvehiclebackoncourseevenbeforeits
3、drivercanreact.Safetyglass,seatbelts,crumplezones,airbags,antilockbrakes,tractioncontrol,andnowstabilitycontrol.Thecontinuingprogressionofsafetysystemsforcarshasyieldedyetanotherdevicedesignedtokeepoccupantsfrominjury.Automaticstabilitysystemscandetectthe
4、onsetofaskidandbringafishtailingvehiclebackoncourseevenbeforeitsdrivercanreact.Stabilitycontrolsystemshelpdriversrecoverfromuncontrolledskidsincurves,thusavoidingspinoutsandaccidents.Usingcomputersandanarrayofsensors,astabilitycontrolsystemdetectstheonset
5、ofaskidandrestoresdirectionalcontrolmorequicklythanahumandrivercan.Everymicrosecond,thesystemtakesa"snapshot,”calculatingwhetheracarisgoingexactlyinthedirectionitisbeingsteered.Ifthereistheslightestdifferencebetweenwherethedriverissteeringandwherethevehic
6、leisgoing,thesystemcorrectsitspathinasplit-secondbyadjustingenginetorqueand/orapplyingthecat'sleft-orright-sidebrakesasneeded.Typicalreactiontimeis40milliseconds-seventimesfasterthanthatoftheaveragehuman.Astabilitycontrolsystemsensesthedriver'sdesiredmoti
7、onfromthesteeringangle,theacceleratorpedalposition,andthebrakepressurewhiledeterminingthevehicle'sactualmotionfromtheyawrate(vehiclerotationaboutitsverticalaxis)andlateralacceleration,explainedAntonvanZanten,projectleaderoftheRobertBoschengineeringteam.Va
8、nZanten'sgroupandateamofengineersfromMercedes-Benz,ledbyprojectmanagerArminMuller,developedthefirstfullyeffectivestabilitycontrolsystem,whichregulatesenginetorqueandwheelbrakepressuresusingtractioncontrolcomponentst