CREEP CUT-OFF CONTROL DEVICE FOR ELECTRIC VEHICLE

A VEHICLE SPEED (VSP) ENTERS A CREEP-CUTOFF-PROHIBITING SPEED REGION LOWER THAN V1 WITH A FORWARD CREEP TORQUE BEING OUTPUTTED (T1), AND THEN THIS STATE CONTINUES FOR A TIME DURATION SET CORRESPONDING TO A TIMER VALUE NTM1 (T2). AT THIS TIME, A CREEP CUTOFF IS PROHIBITED BY SETTING A CREEP-CUTOFF-PR...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAMURA, YOHEI, KAZAMA, ISAMU
Format:	Patent
Sprache:	eng
Schlagworte:	CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A VEHICLE SPEED (VSP) ENTERS A CREEP-CUTOFF-PROHIBITING SPEED REGION LOWER THAN V1 WITH A FORWARD CREEP TORQUE BEING OUTPUTTED (T1), AND THEN THIS STATE CONTINUES FOR A TIME DURATION SET CORRESPONDING TO A TIMER VALUE NTM1 (T2). AT THIS TIME, A CREEP CUTOFF IS PROHIBITED BY SETTING A CREEP-CUTOFF-PROHIBITION FLAG NFLAG AT "1". A BRAKING FORCE BECOMES LARGER THAN OR EQUAL TO A CREEP-CUTOFF-PERMITTING BRAKING-FORCE VALUE TO SATISFY A CREEP-CUTOFF PERMITTING CONDITION RELATED TO THE BRAKING FORCE (T3) WHILE A CREEP-CUTOFF PERMITTING CONDITION RELATED TO THE VEHICLE SPEED HAS BEEN SATISFIED BECAUSE OF ALMOST ZERO OF THE VEHICLE SPEED (VSP). IN RESPONSE THERETO, THE CREEP-CUTOFF PERMITTING FLAG FLAG IS SET AT 1 AT T4. HOWEVER, THE CREEP TOQUE CONTINUES TO BE OUTPUTTED ALSO AFTER T4 WITHOUT THE CREEP CUTOFF, SO THAT A TORQUE REDUCTION ACCOMPANIED WITH STRANGENESS FEELING CAN BE PREVENTED.