Steerable Wheel Angle Control for Inclined Parking
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Solution Overview
Problem
Existing methods for securing vehicles against rolling away on longitudinally inclined roadways are insufficient, particularly in varying surroundings conditions, as they require active driver intervention and may not adequately prevent vehicles from rolling into obstacles.
Innovation Solution
A method that activates the parking brake, assesses the roadway inclination, and adjusts the steerable wheel angle based on surroundings conditions, including the presence and height of curbs, lateral distance, and wheel diameter, using sensors to prevent rolling away and potential collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver manually sets the wheel angle to prevent rolling away, then the vehicle can be secured against unintended rolling, but the driver must actively intervene and the securing may be insufficient in unfavorable cases
Solution Approach 1:
The system automatically determines the optimal wheel angle and activates the parking brake without requiring driver intervention. The parking assistance system independently assesses the parking situation, calculates the appropriate steering angle, and executes the securing maneuver, making the system self-sufficient and eliminating reliance on driver action.
Solution Approach 2:
The system continuously monitors parking conditions including vehicle inclination angle, surrounding obstacles, and curb positions. Based on this feedback, the control unit dynamically adjusts the wheel angle to optimize the securing effect, ensuring reliable prevention of rolling away while adapting to changing conditions.
2Ease of operation
If a fixed wheel angle is used to prevent rolling away, then the securing action is simple, but it may cause the vehicle to roll into obstacles or curbs in varying surroundings conditions
Solution Approach 1:
The wheel angle is dynamically adjusted based on real-time detection of surrounding conditions. The system identifies obstacles, curbs, and road inclination, then continuously optimizes the steering angle to prevent rolling away while avoiding collisions with detected objects, making the securing action adaptive rather than static.
Solution Approach 2:
The system changes the wheel angle parameter according to detected surroundings conditions. By measuring the inclination angle and identifying obstacle positions, the control unit modifies the optimal steering angle to balance the prevention of rolling away with the avoidance of obstacles, adapting to each specific parking scenario.
3Reliability
If the wheel angle is adjusted to prevent rolling away on inclined roadways, then vehicle security is improved, but the system must account for multiple varying parameters such as curb height, lateral distance, and wheel diameter
Solution Approach 1:
The parking assistance system performs multiple functions: it detects road inclination, identifies obstacles and curbs, measures lateral distances, determines wheel diameter, and calculates the optimal wheel angle. This multi-functional system handles all varying parameters through a single integrated control unit, managing complexity while ensuring comprehensive vehicle security.
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
This method ensures secure parking by dynamically adjusting the wheel angle to prevent vehicles from rolling onto the roadway or into obstacles, enhancing safety in diverse parking scenarios without relying solely on driver action.
Implementation Method 1
ascertaining an angle of inclination of a vehicle inclination that is effected by the longitudinal inclination of the roadway
Data Source
AI summary
A method and corresponding device for turning at least one steerable wheel of a motor vehicle during parking on a longitudinal inclination of a roadway includes activating a parking brake of the motor vehicle, ascertaining the inclination angle of the vehicle inclination that is effected by the longitudinal inclination of a roadway, and turning the steerable wheel to achieve a wheel angle as a function of at least one specifiable and/or ascertained parameter. The setting of the magnitude of the wheel angle takes place as a function of at least one surroundings situation of the motor vehicle, ascertained using at least one sensor. The corresponding device cooperates with a parking brake, an inclination angle sensor, a steering device, and a surroundings recording device having at least one sensor.