REAR WHEEL TOE ANGLE CONTROLLER AND REFERENCE POSITION CALIBRATION METHOD OF ELECTRIC ACTUATOR IN REAR WHEEL TOE ANGLE CONTROLLER

摘要

[TASK] The wheel alignment of rear wheels can be properly set without using an alignment tester if the rear wheels are equipped with a rear wheel toe angle control device. [SOLUTION] In a calibration drive control, an ECU (12) actuates electric actuators (11) until the front wheel steering angle (´f) becomes zero or the rear wheel toe angles (´r) are symmetric to each other (steps S3 and D4) to thereby achieve a symmetric toe angle position (Ssym) (step S5). Then, the ECU (12) actuates the electric actuators (11) from the symmetric toe angle position (Ssym) by a same amount so as to cause the rear wheel toe angles to be a neutral value, and a reference position (SO) to be substantially equal to a standard operational position (Sstd) or an axial force (AF) to be substantially equal to a standard axial force (AFstd) (step S7). At this time, the operational position detected value (Sdtc) may be reset as the reference position (SO) (step S10).