Steer-by-Wire Feedback Torque Control for Traction Steer Disturbance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In steer-by-wire vehicles, traction steer disturbances due to driver feedback torque can affect the resistance felt at the steering wheel, leading to inconsistent steering feedback.
Innovation Solution
A system that utilizes sensors to gather data, processes it to determine the likelihood of traction steer disturbances, and adjusts the steering wheel resistance via a motor to mitigate these disturbances based on calculated corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If driver feedback torque is provided in steer-by-wire vehicles, then steering feedback is enhanced, but traction steer disturbances cause inconsistent resistance at the steering wheel
Solution Approach 1:
The system continuously monitors steering rack load and wheel acceleration through sensors, processes this information through controllers to determine disturbance likelihood, and adjusts motor torque in real-time to maintain consistent steering feedback while compensating for traction steer disturbances
Solution Approach 2:
The motor acts as an intermediary between the driver's steering input and the actual wheel movement, injecting compensatory torque to counteract disturbances. The control system serves as another intermediary that processes sensor data and determines the appropriate compensation strategy
2Ease of operation
If resistance is adjusted to counteract traction steer disturbances, then steering feedback consistency is improved, but system complexity increases
Solution Approach 1:
The control system is divided into distinct functional modules: sensor data acquisition, disturbance likelihood determination, torque calculation, and motor control execution. This segmentation allows each module to handle specific tasks independently, managing overall system complexity
Solution Approach 2:
The system uses its own sensor data and control capabilities to automatically detect and compensate for disturbances without external intervention. The multi-vehicle system also shares disturbance information autonomously to improve collective steering consistency
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides consistent steering feedback by adjusting resistance to counteract traction steer disturbances, enhancing the driver's steering experience.
Implementation Method 1
a motor that is coupled to the steering wheel... selectively adjusting resistance for a steering wheel of the steering system, in accordance with instructions that are provided via the one or more processors and that are executed via the motor
Data Source
AI summary
In an exemplary embodiment, a system is provided that includes one or more sensors and one or more processors of a vehicle having a steering system. The one or more sensors are configured to obtain sensor data as to the vehicle. The one or more processors are coupled to the one or more sensors, and are configured to at least facilitate determining a likelihood of a traction steering disturbance occurring for the vehicle; and selectively adjusting resistance for a steering wheel of the steering system, in accordance with instructions that are provided via the one or more processors and that are executed via a motor that is coupled to the steering wheel.