Steering Device Secondary Handle Adaptive Control
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Solution Overview
Problem
Existing steering devices for motor vehicles with secondary handles primarily offer alternative control options rather than enhancing the primary handle's functionality, limiting their utility in varying operating conditions.
Innovation Solution
A secondary handle that dynamically influences the steering mechanics by interacting with the electrical actuator, with its functionality adjusted based on vehicle speed, sensor data, and other state variables to provide additional control options tailored to specific driving situations, such as sensitive directional control at high speeds and easier maneuvering at low speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the secondary handle is used as an alternative control option to the primary handle, then it provides additional control methods for drivers with physical impairments, but it does not enhance the overall steering functionality or adapt to varying driving conditions
Solution Approach 1:
The patent implements dynamic adaptability by enabling the secondary handle to assume different functional roles based on detected driving conditions. The control unit automatically adjusts the secondary handle's function - serving as auxiliary steering control during manual steering, as primary control during automated parking, or as emergency backup - thereby dynamically adapting to varying operational requirements without requiring physical modification of the handle itself
Solution Approach 2:
The system changes operational parameters by modifying the secondary handle's control characteristics according to driving conditions. The control unit adjusts parameters such as steering ratio, response sensitivity, and intervention level based on vehicle speed, steering angle, and detected maneuver type, transforming the secondary handle from a static alternative control into a context-adaptive control interface
2Device complexity
If the secondary handle provides fixed alternative control options, then it simplifies the control system design, but it limits the ability to provide context-dependent steering assistance
Solution Approach 1:
The patent employs feedback mechanisms where the control unit continuously monitors driving conditions including vehicle speed, steering wheel position, gear state, and parking sensor data. Based on this feedback, the system automatically determines the appropriate functional mode for the secondary handle, enabling context-adaptive control without requiring complex manual configuration or switching mechanisms
Solution Approach 2:
The control system performs self-service by autonomously determining when and how to activate different secondary handle functions based on detected operating conditions. The system automatically switches between modes such as auxiliary steering support, automated parking control, and emergency backup without requiring driver intervention or complex external control logic
3Force
If the secondary handle acts with full steering effect regardless of operating conditions, then it provides maximum steering input, but it may cause over-steering or unsafe maneuvers in situations requiring subtle corrections
Solution Approach 1:
The patent applies local quality by differentiating the steering effect magnitude based on the specific operating context. The control unit modulates the secondary handle's steering influence - applying full or amplified effect during automated parking maneuvers where precise positional control is needed, while applying reduced or proportional effect during normal driving to maintain stability and prevent over-correction
Data Source
Figure 1
AI summary
The steering device has a primary handle (5), which is coupled to a steering mechanism (8) by a mechanical connection (4) for influencing the driving direction of the motor vehicle. A secondary handle (6) is connected to a steering control unit (2) by an electric connection (7). The secondary handle interacts with a portion of the complete steering effect on the steering mechanism, which is attained by the electric actuator (3), where the portion is predetermined by the steering control unit.