A Novel Method to Assess 4WS Vehicle Stability Based on Vehicle Sideslip Angle and Angular Velocity Phase Plane Method Dongfeng Off-road Vehicle Company Limited

Format:

Book

Conference/Event

Author/Creator:

Peng, Dengzhi, author.

Contributor:

Liu, Qing

Wang, Long

Xia, Zuguo

Conference Name:

Automotive Technical Papers (2024-01-01 : Warrendale, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2024

Summary:

Vehicle dynamic control could improve vehicle performance. Vehicle stability is vital to the determination of vehicle dynamic control strategy. The phase plane method is one of the most common methods to judge vehicle stability. To determine the 4WS (four-wheel steering) vehicle stability status faster and more accurately, a novel method to assess the vehicle stability is based on the vehicle sideslip angle and angular velocity () phase plane. At first, the 2 DOF (degree of freedom) model with a nonlinear tire model is established to acquire phase plane. Then the boundary of the stability region generated by the current method is compared. A crosspoint-ellipse method is provided based on the boundary comparison with the ideal boundary. The boundary function determined by the crosspoint-ellipse method is fitted based on vehicle dynamic theory and the boundary analysis with different steering angles, velocity, and road adhesion coefficient. At last, the transition area between the stable and unstable region is acquired by considering the uncertainty of the road adhesion coefficient. The provided method could describe the stable boundary closer to the ideal region with a relatively simple function, which could lay a good foundation for vehicle dynamic control

Notes:

Vendor supplied data

Publisher Number:

2024-01-5004

Access Restriction:

Restricted for use by site license