Steering Control Device Dynamic Translation Settings
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Solution Overview
Problem
Existing vehicle steering systems, particularly steer-by-wire systems, do not adequately account for dynamic variables like yaw rate and lateral acceleration, limiting the driver's ability to influence vehicle dynamics and adjust steering behavior according to personal preference or safety needs.
Innovation Solution
A method and arrangement that allow drivers to select translation settings for their steering requests into target dynamic variables such as yaw rate and lateral acceleration, using a steering control device to determine and set the required vehicle steering angle, enabling more direct influence over vehicle dynamics and behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a steering system uses simple speed-dependent translation of steering wheel angle to wheel steering angle, then the system is simple and easy to operate, but the driver cannot directly influence vehicle dynamics and adjust steering behavior according to personal preference
Solution Approach 1:
The system dynamically adjusts the translation ratio between steering wheel angle and wheel steering angle based on selected translation settings. The steering angle controller receives the driver's steering input and applies a dynamic translation ratio to produce the wheel steering angle, allowing the vehicle's steering behavior to adapt to different driving scenarios and driver preferences while maintaining a relatively simple overall system architecture
Solution Approach 2:
The invention changes the translation ratio parameter based on selected translation settings. The steering angle controller adjusts this parameter to translate the driver's steering input into different wheel steering angles, enabling the vehicle to exhibit different steering behaviors (e.g., sports car-like or sedan-like characteristics) without requiring complex mechanical modifications
2Reliability
If the steering system translates steering inputs directly into wheel steering angle without considering dynamic variables, then the system response is fast and simple, but the vehicle does not behave appropriately in response to steering requests from the driver's perspective
Solution Approach 1:
The steering angle controller incorporates feedback by receiving the driver's steering input, applying the selected translation setting, and adjusting the wheel steering angle accordingly. This feedback mechanism ensures that the vehicle's steering behavior aligns with the driver's intentions and the selected translation setting, improving reliability while keeping the control algorithm relatively simple
3Adaptability or versatility
If the steering system provides multiple translation settings for different steering behaviors, then the driver can choose preferred vehicle behavior, but the system complexity increases
Solution Approach 1:
The steering angle controller is designed to handle multiple translation settings within a single unified system. The controller can receive driver steering input and apply different translation ratios based on selected settings, enabling the same hardware and software platform to provide multiple steering behaviors (e.g., sports car, sedan, truck characteristics) without requiring separate systems for each behavior type
Data Source
Figure 1~2
AI summary
The invention relates to a method for setting a vehicle steering angle with a vehicle steering system (1), wherein the vehicle steering angle can be set at least partly using an actuator (7) of the vehicle steering system (1), having the steps of: - providing a possible selection, by means of which the vehicle driver can select one of at least two transformation settings (U), each setting defining a transformation of a driver steering request (MH) into a target dynamic variable (SD); - obtaining a selected transformation setting (U); obtaining a driver steering request (MH); ascertaining a target dynamic variable (SD) of the vehicle (100) on the basis of the driver steering request (MH) and the selected transformation setting (U); and setting a required vehicle steering angle in order to achieve the target dynamic variable (SD). The invention additionally relates to an assembly (10) for carrying out such a method.