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BMW develops steering technology for enhanced driver feedback

© A. Krivonosov
BMW patents steering system using vibrations and noise to improve road feedback in electric and steer-by-wire models, aiming for precision and classic feel.
Michael Powers, Editor

BMW is considering a new approach to steering in its future models. The company has patented technology designed to give drivers more precise road feedback.

Many BMW enthusiasts have noted that current models with electric power steering provide less feedback than older vehicles with hydraulic systems. The new development aims to address this issue. According to the patent, the steering wheel will generate specific vibrations that convey information about the car's behavior to the driver. The system uses what's called stochastic noise—special signals that create a sense of resistance and motion.

This technology is primarily intended for vehicles with steer-by-wire systems, where the steering wheel has no direct mechanical connection to the front wheels. In such setups, an electronic actuator creates steering force, mimicking traditional mechanical operation.

BMW engineers propose using different signal types, such as white, pink, or red noise. These allow for varied steering sensations depending on speed, acceleration, and road conditions.

Essentially, the system operates on a feedback principle similar to gaming steering wheels for simulators. But in a car, it can communicate information about tire grip, lateral forces, and road surface conditions to the driver.

Experts believe this technology could represent a significant step in the evolution of electronic steering systems, potentially combining modern electronic precision with the "alive" feel of classic steering.