1：What is it?
DAS (Direct-Acting Steering) is a steering system that replaces traditional mechanical connections with a fully electronically controlled system.
2：Advantages:
Direct digital signal input: The system eliminates mechanical components that may cause steering delay, resulting in more precise and responsive steering.
By eliminating mechanical connections, the steering wheel is not affected by impacts from the road to the wheels, providing enhanced comfort.
Customizable settings allow for adjustments to steering assist and steering ratio, enabling personalized driving experiences.
3：Did you know?
In terms of road feel, the DAS system collects data on road conditions and wheel vibrations through sensors. It then uses steering feedback actuators to simulate the road feel and even the feedback force when turning the wheel.
Without mechanical connections, the intrusion of the steering column in the event of a collision is reduced, improving vehicle safety.
The transmission component retains mechanical transmission parts, so when the electronic system fails, the clutch automatically engages, allowing the driver to maintain control of the vehicle.
4：Principle:
The DAS Line-Controlled Active Steering system has a similar structure to traditional steering systems, consisting of a steering wheel, steering column, and steering mechanism. However, it incorporates three sets of ECU (Electronic Control Unit), a steering feedback actuator behind the steering wheel, and a clutch. The three sets of ECU receive signals from the steering wheel's movement and transmit them to three sets of motors. Two of the motors control the wheel's rotation angle and speed, while one motor simulates road feedback forces. An additional mechanical structure is included as a backup in case all three sets of ECUs fail.
