Vehicle Stability Control Through Predictive and Optimal Tire Saturation Management

2012 ◽  
Author(s):  
Justin Sill ◽  
Beshah Ayalew
Keyword(s):  
Stability Control ◽  
Vehicle Stability ◽  
Distribution Problem ◽  
Scale Separation ◽  
Torque Distribution ◽  
Hydraulic Hybrid ◽  
Time Scale Separation ◽  
Vehicle Stability Control ◽  
Natural Time ◽  
Set Up

This paper presents a predictive vehicle stability control (VSC) strategy that distributes the drive/braking torques to each wheel of the vehicle based on the optimal exploitation of the available traction capability for each tire. To this end, tire saturation levels are defined as the deficiency of a tire to generate a force that linearly increases with the relevant slip quantities. These saturation levels are then used to set up an optimization objective for a torque distribution problem within a novel cascade control structure that exploits the natural time scale separation of the slower lateral handling dynamics of the vehicle from the relatively faster rotational dynamics of the wheel/tire. The envisaged application of the proposed vehicle stability strategy is for vehicles with advanced and emerging pure electric, hybrid electric or hydraulic hybrid power trains featuring independent wheel drives. The developed predictive control strategy is evaluated for, a two-axle truck featuring such an independent drive system and subjected to a transient handling maneuver.

The Vehicle Stability Test System Based on Active Brake Control for Overturning Prevention

2013 ◽  
Vol 694-697 ◽  
pp. 1340-1348
Author(s):  
Jian Zhu Zhao ◽  
Lu Zhang ◽  
Zhong Fu Zhang ◽  
Guo Ye Wang ◽  
Yan Chen
Keyword(s):  
Test System ◽  
Stability Control ◽  
Vehicle Stability ◽  
System Failure ◽  
Vehicle System ◽  
Vehicle Stability Control ◽  
Study Results ◽  
Set Up ◽  
Control Principle ◽  
Performance Research

Design the structure of the vehicle system for overturning prevention and set up the system dynamic model. Based on the Matlab/Simulink, establish the dynamic simulation system of the vehicle system for overturning prevention for the Chery A3 car. Using the brake / drive integrated ESP control principle, based on the simulation model, respectively simulate and analyze the ESP control performances of the vehicle system and the vehicle system for overturning prevention on different simulation conditions. The study results indicate that when there is no ESP control or ESP control system failure, the vehicle system for overturning prevention can simulate the ESP control performances of the vehicle system effectively, the ESP control performances of the vehicle system and the vehicle system for overturning prevention have remarkable consistency. The theory of the vehicle system for overturning prevention for the ESP control performances test provides a basis for the vehicle stability control performance research.

Novel Vehicle Stability Control Using Steer-by-Wire and Independent Four Wheel Torque Distribution

2003 ◽  
Author(s):  
Stefan Kueperkoch ◽  
Jasim Ahmed ◽  
Aleksandar Kojic´ ◽  
Jean-Pierre Hathout
Keyword(s):  
Control Algorithm ◽  
Stability Control ◽  
Front Wheel ◽  
Vehicle Stability ◽  
Actuator Failure ◽  
Torque Distribution ◽  
Vehicle Stability Control ◽  
Steer By Wire ◽  
Wheel Torque ◽  
Electrical Connections

The introduction of X-By-Wire technology opens new possibilities for vehicle stability control. This technology replaces the mechanical links currently existing between the driver and different actuators with electrical connections so that the driver can be decoupled from the control system. In this paper, we consider a X-By-Wire vehicle powered by four independent wheel motors and front wheel steer-by-wire. For such a vehicle, a control algorithm is developed that employs steering and individual wheel acceleration in addition to braking to enhance stability and improve performance. Such a vehicle offers advantages in case of actuator failure where the remaining actuators can act to ensure stability and we illustrate this in simulation using our control algorithm. Finally, we describe our experimental setup and present preliminary experimental results.

An Analytical Transient Tire Model

2001 ◽  
Vol 29 (2) ◽  
pp. 108-132 ◽  
Author(s):  
A. Ghazi Zadeh ◽  
A. Fahim
Keyword(s):  
Transient Behavior ◽  
Stability Control ◽  
Vehicle Stability ◽  
Tire Model ◽  
Steering Angle ◽  
First Order ◽  
Vehicle Stability Control ◽  
Proposed Model ◽  
Depth Study ◽  
And Performance

Abstract The dynamics of a vehicle's tires is a major contributor to the vehicle stability, control, and performance. A better understanding of the handling performance and lateral stability of the vehicle can be achieved by an in-depth study of the transient behavior of the tire. In this article, the transient response of the tire to a steering angle input is examined and an analytical second order tire model is proposed. This model provides a means for a better understanding of the transient behavior of the tire. The proposed model is also applied to a vehicle model and its performance is compared with a first order tire model.

Mixed H∞/H2 Output Feedback Stability Control for Dual-Motor Independent Drive Electric Vehicle

2013 ◽  
Vol 658 ◽  
pp. 602-608 ◽  
Author(s):  
Cheng Lin ◽  
Chun Lei Peng
Keyword(s):  
Electric Vehicle ◽  
Output Feedback ◽  
Stability Control ◽  
Vehicle Stability ◽  
Robust Performance ◽  
Output Feedback Controller ◽  
Vehicle Stability Control ◽  
Feedback Stability ◽  
Simulation Results ◽  
Yaw Moment

This paper presents the design of mixed H∞/H2Output Feedback Controller for Independent Drive Electric Vehicle Stability Control. It generates yaw moment by applying driving intervention at front Independent driving wheels according to the vehicle states. The performance of the proposed controller is evaluated through a series of simulations under different velocity and different mass. The simulation results show that the controller can help vehicle against a certain range of uncertainty (speeds and loads) and get excellent robust performance.

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