Commercial Vehicle Steering Correction by Selective Wheel Braking
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Solution Overview
Problem
Existing driver assistance systems for commercial vehicles, particularly large or heavy vehicles, face challenges in efficiently adjusting steering angles without additional components, leading to increased effort, cost, and potential tire or clutch wear during maneuvers like parking and turning, and are difficult to implement safely due to their size and complexity.
Innovation Solution
A method utilizing individual wheel braking interventions to pivot vehicle wheels about a pivot axis, adjusting steering angles directly, thereby preventing collisions by influencing the vehicle's direction without additional components like electric motors, thus enhancing safety and reducing effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual wheel braking interventions are used to adjust steering angles, then safety and maneuverability are improved, but tire wear and energy consumption increase
Solution Approach 1:
The system dynamically adjusts steering angles by applying braking forces to individual wheels only when collision risk is detected, rather than continuously. The braking intervention is temporary and situation-dependent, allowing the system to maintain safety while minimizing tire wear through selective, dynamic activation rather than constant operation.
Solution Approach 2:
The system converts the potentially harmful effect of braking (tire wear) into a beneficial safety function. By using controlled braking interventions on individual wheels, the system generates steering corrections that prevent collisions, transforming what would normally be a wear-inducing operation into a protective safety mechanism that only activates when necessary.
2Device complexity
If individual wheel braking interventions are used to adjust steering angles, then device complexity is reduced, but energy consumption increases
Solution Approach 1:
The braking device performs multiple functions: it serves both as a safety mechanism for collision avoidance and as a steering adjustment mechanism. By using the existing braking system for dual purposes rather than adding a dedicated steering actuator, the system reduces overall device complexity while the energy consumption is minimized through selective activation only when collision risk is detected.
Solution Approach 2:
The braking system serves itself by using its own capability (braking force) to achieve steering adjustment without requiring additional dedicated steering actuators. This self-service approach eliminates the need for separate steering motors or mechanisms, reducing device complexity while energy consumption is kept low through on-demand operation.
3Reliability
If steering angles are adjusted during maneuvers, then collision prevention is improved, but maneuver precision is worsened
Solution Approach 1:
The system continuously monitors the vehicle's environment and maneuver state, using sensor feedback to detect collision risks in real-time. This feedback mechanism allows the system to apply braking interventions only when and where needed, making precise, targeted steering corrections that prevent collisions while maintaining overall maneuver precision through continuous monitoring and selective intervention.
Solution Approach 2:
The system performs preliminary detection of collision risks before they materialize, allowing preventive braking interventions to be applied in advance. By detecting potential hazards early and applying corrective braking before the collision occurs, the system maintains maneuver precision while ensuring collision prevention through proactive rather than reactive control.
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 effectively prevents collisions during maneuvers by adjusting steering angles through braking, reducing tire and clutch wear, and maintaining safety with minimal additional costs and space requirements, enhancing the vehicle's operational efficiency and comfort.
Implementation Method 1
one of the vehicle wheels is braked by a braking intervention effected by a braking device of the commercial vehicle, whereby the vehicle wheels are pivoted as a result of the braking intervention
Data Source
AI summary
A method for operating a driver assistance system of a commercial vehicle having two vehicle wheels pivotably arranged on a front axle is provided. An environment of the commercial vehicle is detected by a detection device of the driver assistance system. When there is an imminent collision with an object, which is formed separately from the commercial vehicle and located in the environment, is detected by the detection device during a stop approach, a parking maneuver, or a turning maneuvers of the commercial vehicle, one of the vehicle wheels is braked by a braking intervention effected by a braking device of the commercial vehicle so that the vehicle wheels are pivoted as a result of the braking intervention in order to prevent the collision of the commercial vehicle with the object.