Autonomous Vehicle Lateral Maneuvering for Collision Avoidance
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Solution Overview
Problem
Automated driving systems face challenges in autonomously maneuvering vehicles to create space for rearward vehicles, reducing the likelihood of being struck, especially when relative velocities and distances are critical and lateral movements are necessary to avoid collisions.
Innovation Solution
The system includes actuators for controlling steering, shifting, acceleration, or braking, in conjunction with sensors providing location and velocity data, allowing the controller to determine relative velocities and distances, and automatically maneuver the vehicle laterally to create space by shifting positions relative to obstacles and lane markings based on threshold conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle maintains its current lateral position in the driving lane, then the vehicle follows standard driving behavior, but the risk of being struck by rearward vehicles increases when relative velocity and distance thresholds are exceeded
Solution Approach 1:
The system dynamically adjusts the vehicle's lateral position based on real-time sensor data. When the relative velocity between the host vehicle and a rearward object exceeds a first threshold and the distance falls below a second threshold, the controller automatically maneuvers the vehicle laterally within the driving lane. This dynamic adjustment allows the vehicle to adapt its position to create space for rearward vehicles, reducing collision risk while maintaining normal driving behavior under standard conditions.
2Reliability
If the vehicle automatically maneuvers laterally to create space for rearward vehicles, then collision risk is reduced, but the complexity of the control system increases
Solution Approach 1:
The controller is designed to perform multiple functions: it monitors sensor data, determines relative velocity and distance, evaluates threshold conditions, and executes lateral maneuvers when necessary. This multi-functional approach consolidates collision avoidance capabilities within the existing control system, reducing the need for separate dedicated systems while maintaining comprehensive safety functionality.
Solution Approach 2:
The system continuously receives sensor data about the environment, particularly the position and velocity of rearward objects. The controller processes this feedback information, compares it against predefined thresholds, and automatically adjusts the vehicle's lateral position when conditions warrant intervention. This closed-loop feedback mechanism enables intelligent decision-making without requiring overly complex control architecture.
3Extent of automation
If the vehicle uses sensor data to determine relative velocity and distance for lateral maneuvering, then autonomous space creation is achieved, but the measurement and detection requirements become more stringent
Solution Approach 1:
The system employs sensors as intermediary devices to measure the position and velocity of rearward objects. These sensors provide the necessary data for the controller to calculate relative velocity and distance, enabling autonomous decision-making. The intermediary sensors bridge the gap between the physical environment and the control system, translating physical quantities into actionable information.
Data Source
AI summary
An automotive vehicle includes at least one actuator configured to control vehicle steering, shifting, acceleration, or braking, at least one sensor configured to provide signals indicative of a location and velocity of an object external to the vehicle relative to the vehicle, and at least one controller in communication with the at least one actuator and the at least one sensor. The at least one controller is configured to, in response to a signal from the at least one sensor indicating that a relative velocity between a rearward object and the vehicle exceeds a first threshold and a distance between the rearward object and the vehicle falls below a second threshold, automatically control the at least one actuator to maneuver the vehicle from a first lateral position with respect to a current driving lane to a second lateral position with respect to the current driving lane.