System Description: Description
- RAS control unit controls the rear active steer.
- RAS system consists of RAS control unit and RAS actuator components.
- RAS control unit controls the RAS actuator assembly according to the steering angle and vehicle speed.
- Self-diagnosis can be performed with CONSULT at each control unit to another RAS control unit.
- It transmits/receives each signal from the Following Control: unit via CAN communication line:
| Component parts | Function |
|---|---|
| Steering angle sensor | It mainly transmits the following signals to RAS control unit via CAN communication:
|
| ABS actuator and electronic unit (control unit) | It mainly transmits the following signals to RAS control unit via CAN communication:
|
| ECM | It mainly transmits the following signals to RAS control unit via CAN communication:
|
| Unified meter and A/C amp. | It mainly transmits the following signals from RAS control unit via CAN communication:
|
Model Following Control:
- Situation [A]:
The rear wheels turn to the opposite phase of front wheels for a moment so as to improve the start-up of yaw rate (steering angle speed).
- Situation [B]:
The rear wheels turn to the same phase of front wheels after securing the necessary yaw rate (steering angle speed) to cornering.