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Recent Patents on Mechanical Engineering

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ISSN (Print): 2212-7976
ISSN (Online): 1874-477X

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Research Article

Risk Assessment Model of Emergency Lane Change Behavior for Intelligent Vehicles

Author(s): Feng Yixuan, Zhang Huanhuan*, Yao Minjie and Wu Hongchao

Volume 17, Issue 3, 2024

Published on: 04 March, 2024

Page: [208 - 221] Pages: 14

DOI: 10.2174/0122127976290621240212054625

Price: $65

Abstract

Background: The condition that vehicles are prone to skidding during emergency lane changing, an anti-rollover constraint is added to the trajectory planning.

Methods: The evaluation index is constructed by the lateral load transfer rate LTR, so as to put forward a seventh-order polynomial trajectory planning method considering the anti-rollover. It improves the safety and stability of the planned trajectory of the intelligent vehicle when changing lanes in an emergency. The risk assessment index under different emergency lane changing modes is obtained through simulation tests, the phase plane method is used to classify the risk level and formulate a reasonable risk decision-making mechanism. A patented model for risk assessment considering the risk of instability is designed.

Results: The tests conducted on a low-friction road show that when the risk assessment factor is in the range of the steering lane change mode intervals, the steering controller maneuvers the vehicle to make an emergency lane change with a seventh-order polynomial trajectory.

Conclusion: The small fluctuation of the LTR verifies the feasibility of the model.

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