Rear wheel toe angle control device and method for calibrating a reference position of an electric actuator in a rear wheel toe angle control device

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 (δf) becomes zero or the rear wheel toe angles (δr) 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 (S0) 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 (S0) (step S10).