Steering Assist Torque for Evasive Maneuver Initiation
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Solution Overview
Problem
Inattentive or inexperienced drivers may fail to initiate timely evasive maneuvers during impending rear-impact accidents due to shock or false perceptions, leading to reduced chances of successfully avoiding collisions.
Innovation Solution
A motor vehicle system comprising a sensor device for detecting surroundings and an auxiliary device producing an indicative steering torque on the steering control, which generates a temporary, haptically perceivable steering suggestion to guide the driver in an evasive maneuver by displacing the steering control in an evasive direction without altering the vehicle's course significantly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system waits for driver input before initiating steering assist function, then the driver maintains control and the system avoids false interventions, but inattentive or inexperienced drivers cannot initiate evasive maneuvers in time due to shock or false perceptions
Solution Approach 1:
The system performs preliminary detection of hazard situations and calculates driving stages in advance, so that when a hazard is detected, the steering assist function can be initiated immediately without waiting for driver input. The trajectory calculation unit continuously computes drivable and stable trajectories, and the steering assessor unit continuously monitors steering wheel operation, enabling the system to act preemptively when a hazard is identified.
2Speed
If the system provides steering assistance by influencing the steering device, then evasive maneuvers can be initiated promptly, but the driver may lose situational awareness or override capability
Solution Approach 1:
The system continuously monitors the steering wheel operation via the steering assessor unit and provides real-time feedback to the driver through the steering assistance. The monitoring unit detects the driver's steering inputs, and the trajectory calculation unit adjusts the steering assist function based on this feedback, ensuring the driver maintains situational awareness and override capability while receiving timely assistance.
3Reliability
If the system continuously monitors steering wheel operation and vehicle surroundings, then timely hazard detection is achieved, but the system complexity and computational load increase
Solution Approach 1:
The system uses multi-functional units that perform multiple tasks. The sensor device detects both vehicle surroundings and steering wheel operation. The trajectory calculation unit calculates both drivable trajectories and stable trajectories. The steering assessor unit assesses both current steering wheel operation and hazard situations. This multi-functionality reduces overall system complexity while maintaining high reliability.
Data Source
AI summary
A motor vehicle including a sensor device detecting the current vehicle surroundings and an auxiliary device producing a steering torque on a steering control of the motor vehicle. A data processing device connected to the sensor device and the auxiliary device determines a free escape lane for the motor vehicle by considering the signals of the sensor device to determine the existence of an imminent impact or collision in a current driving situation. If an imminent impact or collision appears likely the data processing device actuates the auxiliary device to produce a temporary steering torque on the steering control. The steering control can be temporarily displaced, moved, or turned to a defined extent in an evasive steering direction to steer the motor vehicle into the free escape lane.