Robust Control with Uncertain Disturbances for Vehicle Drift Motions
Abstract
:1. Introduction
2. Vehicle Drift Motion Mechanism Analysis
2.1. Vehicle Dynamics Model
2.1.1. Vehicle Dynamics Model Equations
2.1.2. Tire Force
2.1.3. Roll Safety Analysis
2.2. Motion Mechanism Analysis in Steady States
2.2.1. Rear Axle Steady-State Equations
2.2.2. Front Axle Steady-State Equations
2.3. Motion Mechanism Analysis in Transient States
2.3.1. Rear Axle Transient-State Equations
2.3.2. Front Axle Transient-State Equations
3. Robust Control in Drift Conditions
4. Simulation and Discussion
4.1. Motion Mechanism Analysis Result
4.2. Simulation Result
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
DOF | degree of freedom |
LQR | linear quadratic regulator |
index | to denote the front and rear axle respectively |
trajectory radius around mass center | |
vehicle mass | |
vehicle body mass (sprung mass) | |
front-wheel steering angle | |
vehicle velocity | |
vehicle longitudinal velocity | |
vehicle lateral velocity | |
vehicle sideslip angle | |
vehicle yaw rate | |
vehicle roll angle | |
distance from gravity center to front or rear axle | |
height of gravity center from the roll axis | |
height of gravity center | |
aerodynamic drag force | |
air density | |
aerodynamic drag coefficient | |
frontal area of vehicle | |
combined roll damping coefficient | |
combined roll stiffness coefficient | |
moment of inertia with respect to roll axis | |
moment of inertia with respect to yaw axis | |
moment of inertia with respect to roll and yaw axis | |
moment of inertia with respect to roll axis after wheel lift-off | |
moment of inertia with respect to roll and yaw axis after wheel lift-off | |
wheel rotation angular velocity | |
wheel effective rolling radius | |
slip angle at each wheel | |
normalized combined slip ratio at each tire | |
friction coefficient between tire and road surface | |
normalized resultant force at the tire | |
() | longitudinal or lateral slip ratio at each tire |
() | longitudinal or lateral velocity of the wheel center |
() | longitudinal slip or cornering stiffness of the tire respectively |
() | normalized longitudinal or lateral slip ratio at each tire |
() | longitudinal or lateral friction coefficient between tire and road surface |
() | normalized longitudinal or lateral force at each tire |
() | longitudinal, lateral or vertical force at each tire |
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Parameter | Unit | Value |
---|---|---|
(vehicle mass) | kg | 1126.7 |
(vehicle body mass) | kg | 1111.0 |
(distance from gravity center to front axle) | m | 1.265 |
(distance from gravity center to rear axle) | m | 1.335 |
(height of gravity center) | m | 0.518 |
(friction coefficient) | 0.7 |
(m) | (m/s) | (rad) | (rad/s) | (rad) | ||
---|---|---|---|---|---|---|
(a) | 16 | 9.5 | −0.56 | 0.7 | −0.29 | 0.72 |
(b) 1 | 9.6 | 8 | −0.08 | 0.84 | 0.13 | 0.07 |
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Xu, D.; Wang, G.; Qu, L.; Ge, C. Robust Control with Uncertain Disturbances for Vehicle Drift Motions. Appl. Sci. 2021, 11, 4917. https://doi.org/10.3390/app11114917
Xu D, Wang G, Qu L, Ge C. Robust Control with Uncertain Disturbances for Vehicle Drift Motions. Applied Sciences. 2021; 11(11):4917. https://doi.org/10.3390/app11114917
Chicago/Turabian StyleXu, Dongxin, Guoye Wang, Longtao Qu, and Chang Ge. 2021. "Robust Control with Uncertain Disturbances for Vehicle Drift Motions" Applied Sciences 11, no. 11: 4917. https://doi.org/10.3390/app11114917