Nissan Announces New Steer By Wire Technology & Accident Avoidance System

Posted on Oct 21 2012 - 11:00am by Ganny

Nissan has announced a couple of proprietary driving and safety technologies that will be introduced in production Nissans in a year’s time. Independent Control Steering Technology is a first of its kind steer by wire system that dynamically controls the steering input and the Autonomous Emergency Steering System, which takes collision prevention a step further.

Independent Control Steering Technology

This technology replaces the mechanical connection between the steering wheel and the wheel with an electronic one, thus providing independent control over steering input and the tire angle. Being a digital connection, the new system is both faster than mechanical connections and provides constant inputs based on the driving condition using on board computers. Sensors constantly monitor the road conditions and prevent the tires from turning due to, say, a bump on the road. This reduces the amount of steering adjustments that are required to be constantly made by the driver, thus decreasing fatigue during long drives.

The new system also incorporates a camera based straight-line stability system. A camera mounted on the rear view mirror constantly monitors the lane the car is moving in and if detects, what it perceives as an unintended change in lane direction caused by road condition or crosswinds, the system compensates automatically, thus minimizing the stress on the driver.

The new steer by wire technology relies on not one but two engine control units to get the job done, the second ECU being a backup unit. However, in case the electronics fail a backup clutch initiates automatically, connecting the steering wheel and the wheels mechanically.

The new technologies under the trade name of “Driving as Intended” and “Driving with Peace of Mind”, will be available with top of the line Infiniti models in a year’s time.

Autonomous Emergency Steering System

This new collision avoidance system makes use of on board cameras and radar systems to monitor the surroundings of the car. Normally, collision avoidance systems work by applying the brakes when they detect a potential collision situation. The new system takes this technology a step further by adding steering control. During a situation, the brakes are applied automatically, however, if the system feels that further action is required to prevent the collision, the cameras search for a clear space in front of the car and if it finds one, informs the driver to steer into that area. If the driver does not respond fast enough the computers take over and steer the car automatically away from the hazard.

 

Via: Car and Driver