| 摘要 |
<P>PROBLEM TO BE SOLVED: To detects a real rear wheel toe angle without disposing a stroke sensor at a direct-acting electric actuator. <P>SOLUTION: Rear wheel toe angle control devices 10 include the electric actuators 11 and an ECU 12 for driving the electric actuators 11 based on the real rear wheel toe angle δract. The ECU 12 calculates the stroke amount of the electric actuators 11 based on detection results of resolvers 17 set at the electric actuators 11, and then calculates the real rear wheel toe angle δract. The ECU 12 carries out calibration drive control for simultaneously driving left and right electric motors to a toe-in side until the relative movement of the housing of the electric actuators 11 and an output rod is regulated by a stopper under predetermined conditions. When calibration drive is carried out, a stroke amount calculation part calibrates the stroke amount at a position where the relative movement is regulated. <P>COPYRIGHT: (C)2011,JPO&INPIT |
