资源描述:
《汽车专业英文》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、SpincontrolforcarsStabilitycontrolsystemsarethelatestinastringoftechnologiesfocusingonimproveddirivingsafety.Suchsystemsdetecttheinitialphasesofaskidandrestoredirectionalcontrolin40milliseconds,seventimesfasterthanthereactiontimeoftheaveragehuman・Theycorrectvehiclepath
2、sbyadjustingenginetorqueorapplyingtheleft-or-right-sidebrakes,orboth,asneeded.ThetechnologyhasalreadybeenappliedtotheMcrccdcs-BcnzS600coupe・Automaticstabilitysystemscandetecttheonsetofaskidandbringafishtailingvehiclebackoncourseevenbeforeitsdrivercanreact・Safetyglass,s
3、eatbelts,crumplezones,airbags,antilockbrakes,tractioncontrol,andnowstabilitycontrol.Thecontinuingprogressionofsafetysystemsforcarshasyieldedyetanotherdevicedesignedtokeepoccupantsfrominjury.Automaticstabilitysystemscandetecttheonsetofaskidandbringafishtailingvehiclebac
4、koncourseevenbeforeitsdrivercanreact.Stabilitycontrolsystemshelpdriversrecoverfromuncontrolledskidsincurves,thusavoidingspinoutsandaccidents・Usingcomputersandanarrayofsensors,astabilitycontrolsystemdetectstheonsetofaskidandrestoresdirectionalcontrolmorequicklythanahuma
5、ndrivercan.Everymicrosecond,thesystemtakesa"snapshot,”calculatingwhetheracarisgoingexactlyinthedirectionitisbeingsteered.Ifthereistheslightestdifferencebetweenwherethedriverissteeringandwherethevehicleisgoing,thesystemcorrectsitspathinasplit-secondbyadjustingenginetorq
6、ueand/orapplyingthecat'sleft-orright-sidebrakesasneeded・Typicalreactiontimeis40milliseconds-seventimesfasterthanthatoftheaveragehuman.Astabilitycontrolsystemsensesthedriversdesiredmotionfromthesteeringangle,theacceleratorpedalposition,andthebrakepressurewhiledeterminin
7、gthevehicle'sactualmotionfromtheyawrate(vehiclerotationaboutitsverticalaxis)andlateralacceleration,explainedAntonvanZanten,projectleaderoftheRobertBoschengineeringteam・VanZanteiTsgroupandateamofengineersfromMcrccdcs-Bcn厶ledbyprojectmanagerArminMuller,developedthefirstf
8、ullyeffectivestabilitycontrolsystem,whichregulatesenginetorqueandwheelbrakepressuresusingtractioncontrolcomponentstom