Steering Wheel Rotation Control for Autonomous Driving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Steering wheels in vehicles are limited to standard driving positions, restricting their use during autonomous driving modes, as they require continuous driver input, which can lead to unnecessary handling and potential disengagement of self-driving modes.
Innovation Solution
A rotation control system for the steering wheel that switches between rotational and non-rotational conditions, using mechanisms like mechanical or electrical decoupling of the steering shaft from the steering gear, allowing the steering wheel to be fixed in a non-rotational state during autonomous driving, and enabling user-controlled switching via switches, buttons, or voice prompts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the steering wheel is kept in a fixed rotational position during autonomous driving mode, then driver comfort and convenience are improved by preventing unwanted interaction, but the steering wheel's functionality as a steering control device is reduced
Solution Approach 1:
The steering wheel system dynamically adjusts its rotational state based on driving mode. During autonomous driving mode, the steering wheel is configured to remain in a fixed rotational position to prevent unwanted driver interaction and improve comfort. During manual driving mode, the steering wheel returns to its normal rotational functionality. This dynamic state change allows the same component to serve different purposes in different operational contexts.
2Reliability
If the steering wheel is allowed to rotate freely during autonomous driving mode, then steering responsiveness is maintained, but unnecessary driver handling may occur leading to potential disengagement of self-driving mode
Solution Approach 1:
The system preemptively prevents unwanted driver interaction by configuring the steering wheel to remain in a fixed rotational position during autonomous driving mode. This preliminary action stops potential harmful behavior (unintentional steering inputs) before it can occur, thereby maintaining the stability and reliability of the self-driving mode without requiring reactive corrections.
3Adaptability or versatility
If the steering shaft is decoupled from the steering gear during autonomous driving mode, then the steering wheel can be used as a workspace or armrest expanding cabin space, but the mechanical connection for steering control is lost
Solution Approach 1:
The steering system is segmented into separable components: the steering wheel assembly and the steering gear. During autonomous driving mode, the steering shaft is decoupled from the steering gear, allowing the steering wheel to be used as a workspace or armrest. This segmentation enables independent functionality of each component based on operational mode, increasing adaptability while managing system complexity through conditional disconnection.
Data Source
AI summary
A rotation control system for a steering system of a vehicle includes a steering shaft. The rotation control system also includes at least one component operatively coupled to the steering shaft, the steering shaft switchable between a rotational condition and a non-rotational condition during operation of the vehicle, the rotational condition occurring during a manual driving mode and the non-rotational condition occurring during an autonomous driving mode. The rotational control system further includes a condition switching device for allowing a user to switch between the rotational condition and the non-rotational condition, the condition switching device comprising at least one of a switch, a button, and a voice prompt.