STEERING CONTROL DEVICE FOR VEHICLE

• Main Authors: YASUI YOSHIYUKI, KATO HIRAHISA, NAGAYA JUNYA
• Format: Patent
• Language: English
• Published: 22.10.2009
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; 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; MOTOR VEHICLES; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRAILERS; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To suppress "the sense of incompatibility that the steering force during a counter-steering operation is reduced contrary to expectation" felt by a skilled driver, when applying a stabilizing force to a steering operation member for inducing or assisting the counter-steering operation, when the counter-steering operation is necessary. SOLUTION: Stabilizing torque Tstb for inducing or assisting the counter-steering operation is calculated based on a yawing value Ygc (over-steer state quantity Jros, a longitudinal force difference hFx), corresponding to a yawing motion of a vehicle, and a counter-steer value Cstr representing a degree of counter-steer (a counter-steer attained value Cts, a counter-steer deficient value Cfs). The Tstb is applied to a steering wheel in a counter-steer direction. The Tstb is set larger, when Cts is smaller (Cfs is larger) (when an appropriate counter-steer operation is not performed), and is set smaller, when Cts is larger (Cfs is smaller) (when appropriate counter-steer operation is performed). COPYRIGHT: (C)2010,JPO&INPIT