Stability analysis of robustly decoupled car steering system with nonlinear tire model

2002 ◽  
Author(s):  
A. Stotsky ◽  
X. Hu
Keyword(s):  
Stability Analysis ◽  
Steering System ◽  
Tire Model

scholarly journals Modelling and Stability Analysis of Articulated Vehicles

2021 ◽  
Vol 11 (8) ◽  
pp. 3663
Author(s):  
Tianlong Lei ◽  
Jixin Wang ◽  
Zongwei Yao
Keyword(s):  
Stability Analysis ◽  
Critical Velocity ◽  
Equations Of State ◽  
Steering System ◽  
Analysis Model ◽  
Nonlinear Dynamic Model ◽  
Equilibrium Equations ◽  
Eigenvalue Method ◽  
Articulated Vehicles ◽  
The Stability

This study constructs a nonlinear dynamic model of articulated vehicles and a model of hydraulic steering system. The equations of state required for nonlinear vehicle dynamics models, stability analysis models, and corresponding eigenvalue analysis are obtained by constructing Newtonian mechanical equilibrium equations. The objective and subjective causes of the snake oscillation and relevant indicators for evaluating snake instability are analysed using several vehicle state parameters. The influencing factors of vehicle stability and specific action mechanism of the corresponding factors are analysed by combining the eigenvalue method with multiple vehicle state parameters. The centre of mass position and hydraulic system have a more substantial influence on the stability of vehicles than the other parameters. Vehicles can be in a complex state of snaking and deviating. Different eigenvalues have varying effects on different forms of instability. The critical velocity of the linear stability analysis model obtained through the eigenvalue method is relatively lower than the critical velocity of the nonlinear model.

Vehicle Shimmy Modeling With Pacejka's Magic Formula and the Delayed Tire Model

2020 ◽  
Vol 15 (3) ◽  
Author(s):  
Tian Mi ◽  
Gabor Stepan ◽  
Denes Takacs ◽  
Nan Chen
Keyword(s):  
Degrees Of Freedom ◽  
Steering System ◽  
Tire Model ◽  
Magic Formula ◽  
Advantages And Disadvantages ◽  
Contact Models ◽  
Three Degrees Of Freedom

Abstract This paper investigates a three-degrees-of-freedom (DoF) shimmy model of vehicle front wheels with steering system and dependent suspension. The contact models of rigid ground and elastic tire are analyzed from the viewpoint of predicting shimmy. Pacejka's magic formula and the delayed tire model are compared by means of stability charts in various parameter domains. Conclusions are obtained regarding the advantages and disadvantages of the use of the delayed tire model.

Feasibility Analysis of Open-Loop Rollover Control of Heavy Freight Vehicles

1999 ◽  
Author(s):  
P. J. Liu ◽  
S. Rakheja ◽  
A. K. W. Ahmed
Keyword(s):  
Time Delays ◽  
Three Dimensional ◽  
Steering System ◽  
Stability Control ◽  
Open Loop ◽  
Tire Model ◽  
Vehicle Model ◽  
Braking System ◽  
Instability Control ◽  
Abs Algorithm

Abstract In this paper, a comprehensive three-dimensional heavy vehicle model is developed to investigate the effectiveness of an open-loop roll instability control. The steering system compliance, roll steer, bump steer, ackerman steer and wrap steer are incorporated in the vehicle model, along with comprehensive tire model and ABS algorithm. Time delays due to driver’s reaction and the transportation lag of the braking system are characterized by a variable called reaction delay. The rollover indicators in terms of roll safety factor, tractor and trailer lateral accelerations and roll angles, and the rearmost axle roll angle are investigated for their effectiveness for open-loop roll stability control in various cornering and evasive maneuvers, road conditions, braking efforts, and different reaction delays.

A stability analysis of an automobile tire by using multi-mass tire model

2017 ◽  
Vol 2017.23 (0) ◽  
pp. 704
Author(s):  
Yeongwoo KIM ◽  
Shoichiro TAKEHARA ◽  
Yoshiaki TERUMICHI ◽  
Yu KOKETSU ◽  
Zenichiro SHIDA ◽  
...  
Keyword(s):  
Stability Analysis ◽  
Tire Model ◽  
Automobile Tire

A Parameterized Simulation Model for Multi-Axle Vehicle

2011 ◽  
Vol 186 ◽  
pp. 170-175
Author(s):  
Li Qiang Jin ◽  
Chuan Xue Song
Keyword(s):  
Simulation Model ◽  
Present Model ◽  
Equations Of Motion ◽  
Steering System ◽  
Slip Angle ◽  
Vehicle Stability ◽  
Tire Model ◽  
Body System ◽  
Turning Motion ◽  
Turning Radius

This paper presents a mathematical model for multi-axle vehicles Inclusive of steering system, suspension system, tire model, body system. Considering possible factors related to turning motion such as vehicle configuration and suspension, equations of motion were constructed to predict steerability and stability of these vehicles. Turning radius, slip angle at the mass center, and each wheel velocity were obtained by numerically solving the equations. The simulation model is made by MATLAB based on the mathematic equation. To analyze the influence of the wheelbase layout on vehicle stability, driving performance and stability of the vehicle with three wheelbase layout is simulated based on the present model. It is concluded that the wheelbase between second axle and third axle should be long to get better stability when vehicle turning with rear axles.

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