ELECTRIC POWER STEERING DEVICE

There is provided an electric power steering device capable of detecting steering torque with high accuracy without use of a torque sensor, and capable of performing appropriate steering assistance control. An alternative torque correction value (Tc) is operated by comparing alternative torque (T0)...

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Bibliographische Detailangaben
Hauptverfasser:	OUMI, TAMOTSU, TSUNODA, MIKIHIKO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MOTOR VEHICLES PERFORMING OPERATIONS PHYSICS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TESTING TRAILERS TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	There is provided an electric power steering device capable of detecting steering torque with high accuracy without use of a torque sensor, and capable of performing appropriate steering assistance control. An alternative torque correction value (Tc) is operated by comparing alternative torque (T0) operated based on an angle signal at normal time of the torque sensor (3) with a torque detection value (Ti) detected by the torque sensor (3), and is then stored. Then, at normal time of the torque sensor (3), the steering assistance control is performed based on the torque detection value (Ti) detected by the torque sensor (3), whereas when an abnormality happens in the torque sensor (3), the steering assistance control is performed based on corrected alternative torque (T1) obtained by correcting the alternative torque (T0) by the alternative torque correction value (Tc).