Safe Test System for the Turning Vehicles ESP Control Performances on the Lateral Restricted Vehicle System

2013 ◽  
Vol 694-697 ◽  
pp. 1334-1339
Author(s):  
Jian Zhu Zhao ◽  
Lu Zhang ◽  
Guo Ye Wang ◽  
Yan Chen ◽  
Zhong Fu Zhang
Keyword(s):  
Control Strategy ◽  
Test System ◽  
Stability Control ◽  
Control Test ◽  
Vehicle Dynamic ◽  
Vehicle System ◽  
Test Conditions ◽  
Vehicle Dynamic Simulation ◽  
Driving Stability ◽  
Great Uniformity

Project the lateral restricted vehicle system to establish a safe and efficient vehicle driving stability control test system. Aimed at Chery A3 car, based on Matlab/Simulink, establish the lateral restricted vehicle dynamic simulation system. Used the braking and driving integrated ESP control strategy, separately analyze the ESP control performances of the independent vehicle system and the lateral restricted vehicle system on three test conditions including neutral steering, under steering, over steering. The research results indicate that the ESP control performances of the lateral restricted vehicle system and the independent vehicle system have great uniformity on the three test conditions, provide a basis for the vehicle driving stability control test research.

The Vehicles ESP Test System Based on Active Braking Control

2012 ◽  
Vol 588-589 ◽  
pp. 1552-1559
Author(s):  
Lu Zhang ◽  
Guo Ye Wang ◽  
Guo Yan Chen ◽  
Zhong Fu Zhang
Keyword(s):  
Control System ◽  
Test System ◽  
Stability Control ◽  
Control Test ◽  
Control Performance ◽  
Vehicle System ◽  
Braking Control ◽  
Set Up ◽  
The Stability ◽  
Driving Stability

This paper proposes an active braking control dynamical system in order to establish a safe and efficient vehicle driving stability control test system. Aiming at Chery A3 sedan, set up the active braking control dynamic simulation system base on MATLAB/Simulink. Adopting the brake driving integration ESP control strategy, analyze and verify the stability control performance of independent vehicle system and vehicle ESP test system based on active braking control respectively in under steering and excessive steering two test conditions. The analyzing results indicate that the test system based on active braking control can effectively assist vehicle travelling in the absence of ESP control or ESP control system failure; when vehicle has ESP control system, the driving stability control performance of this system and independent vehicle system has remarkable consistency. The active braking control system provides a basis for research of vehicle driving stability control test.

Research for the Turning Vehicles ESP Control Performances on the Yaw Elastic Restriction Vehicle System

2012 ◽  
Vol 229-231 ◽  
pp. 325-330
Author(s):  
Guo Ye Wang ◽  
Lu Zhang ◽  
Guo Yan Chen ◽  
Zhong Fu Zhang
Keyword(s):  
Vehicle Dynamics ◽  
Stability Control ◽  
Dynamics Simulation ◽  
Control Performance ◽  
Vehicle System ◽  
Test Conditions ◽  
Vehicle Systems ◽  
Set Up ◽  
The Stability ◽  
Driving Stability

Project the structure of the yaw elastic restriction vehicle system, and set up the system dynamic model. Establish yaw elastic restriction vehicle dynamics simulation system based on Matlab/Simulink aimed at Chery A3 sedan. Adopting the brake driving integration ESP control strategy, analyze and verify the stability control performance of independent vehicle systems and yaw elastic restriction vehicle system respectively in neutral steer, understeer and oversteer three test conditions. The results of the study show that the stability control performance of yaw elastic restriction vehicle system and independent vehicle systems has remarkable consistency. This provides a basis for vehicle driving stability control test.

Study on Fuzzy Control for Vehicle Dynamic Stability

2012 ◽  
Vol 430-432 ◽  
pp. 1747-1750
Author(s):  
Feng Du ◽  
Zhi Wei Guan ◽  
Guang Hui Yan
Keyword(s):  
Fuzzy Control ◽  
Control Strategy ◽  
Fuzzy Controller ◽  
Rear Wheel ◽  
Stability Control ◽  
Vehicle Stability ◽  
Vehicle Dynamic ◽  
Control Effect ◽  
Vehicle Stability Control ◽  
Driving Stability

To ensure vehicle stability in critical and dangerous working conditions, a vehicle stability control strategy is proposed, which is to generate compensating yaw moment by using the combined action of active rear-wheel steering and differential braking. A corresponding fuzzy controller for the proposed control strategy is designed. To verify the control effect of fuzzy controller, the numerical simulation by using vehicle dynamic model is performed in critical condition. The simulation results show that the designed fuzzy control system can efficiently prevent the vehicle to lose driving stability during critical turning.

Rigid ring with Bouc–Wen tire model for vehicle dynamic analysis

2016 ◽  
Vol 231 (19) ◽  
pp. 3530-3540
Author(s):  
SD Na ◽  
DW Park ◽  
WS Yoo
Keyword(s):  
Dynamic Response ◽  
Equations Of Motion ◽  
Test System ◽  
Ride Quality ◽  
Tire Model ◽  
Vehicle Dynamic ◽  
Static State ◽  
Rigid Ring ◽  
Vehicle Dynamic Simulation ◽  
Suspension Model

Tires are one of the main automobile components that affect driving performance and ride quality. The rigid ring tire model had been widely used to characterise a vehicle rolling over uneven road surfaces. The stiffness of an rigid ring tire is calculated in the quasi-static state; however, this model is limited in its ability to represent the dynamic response of a tire. In this study, a Bouc–Wen type force element was included in the rigid ring tire model to enhance the dynamic response of a tire, and the effectiveness of the proposed rigid ring with Bouc–Wen model was demonstrated. To validate the proposed rigid ring with Bouc–Wen tire model, two experiments were performed. The first one was performed using a flat-trac test system, and the second one was a full-car test performed over a single cleat by using accelerometers and velocity sensors. For the vehicle dynamic simulation, the equations of motion of the vehicle were established using a functional suspension model defined in terms of the kinematic and compliance characteristics of the wheel and chassis. The simulation results obtained using the proposed rigid ring with Bouc–Wen tire model were compared with the experimental results, which showed both efficiency and accuracy of the propsed model.

A Fuzzy Synthesis Control Scheme and Optimization for Vehicle Dynamic Stability System

2007 ◽  
Author(s):  
Yunqing Zhang ◽  
Si Gao ◽  
Lingyang Li ◽  
Liping Chen ◽  
Jingzhou Yang ◽  
...  
Keyword(s):  
Fuzzy Control ◽  
Control Strategy ◽  
High Speed ◽  
Control Method ◽  
Stability Control ◽  
Surface Model ◽  
Vehicle Stability ◽  
Control Parameters ◽  
Vehicle Dynamic ◽  
Sideslip Angle

Vehicle stability control system can enhance the vehicle stability and handling in the emergency situations through the control of traction and braking forces at the individual wheels. This paper presents a Fuzzy synthesis control strategy with an ideal 2-DOF linear model and optimization of the control parameters. The control strategy consists of Fuzzy control of two control objectives (yaw velocity ω and sideslip angle β). Fuzzy functions can adjust and control these two objectives and through Matlab Fuzzy control unit & ADAMS multi-body vehicle dynamic model we obtain optimized simulation. The co-simulation scenario is on iced road with a single sine steering angle input and in a high speed. The control parameters are optimized and analyzed by a combined optimization algorithm (Genetic Algorithm (GA) and Nonlinear Programming Quadratic Line search (NLPQL) method) combined with response surface model (RSM). The simulation results show that the handling stability and safety of the vehicle can be enhanced by the Fuzzy control method that can adapt complex road and driving conditions.

Shared Control Strategy for Vehicle Stability on U-Split Road

2019 ◽  
Author(s):  
Liangyao Yu ◽  
Lanie Abi ◽  
Zhenghong Lu ◽  
Yaqi Dai
Keyword(s):  
Control Strategy ◽  
Response Speed ◽  
Steering System ◽  
Stability Control ◽  
Front Wheel ◽  
Shared Control ◽  
Steering Wheel ◽  
Vehicle Dynamic ◽  
Stability Performance ◽  
The Stability

Abstract The steer-by-wire (SBW) system eliminates the mechanical connection between the steering wheel and the carriage wheel. It eliminates various limitations of the traditional steering system, so that the steering ratio of the car can be freely designed and the steering by wire system can achieve good active front wheel steering (AFS) function. In the study of the stability control of vehicles on the μ-split road, there are mainly two methods, one based on vehicle trajectory maintenance and the other based on vehicle dynamic stability control. Both of these control methods have delays, which is not conducive to the trajectory flowing ability of the vehicle when driving on the μ-split road. A shared control strategy is proposed to improve the vehicle’s stability. The purpose of this study is to establish different variable transmission ratio characteristic curves according to the different input signals of the driver and the vehicle, such as angular change speed, steering wheel angle, etc. Based on these conditions, a new model combining driver’s intention with vehicle dynamic model is established, so as to achieve the purpose of judging the stability of vehicle in advance, to reduce the delay time of control and to improve the response speed, which will improve the stability performance of the vehicle.

The Vehicles ESP Safe Test System Based on Aid Wheels Breaking Control Vehicle System

2012 ◽  
Vol 605-607 ◽  
pp. 1710-1716
Author(s):  
Lu Zhang ◽  
Guo Ye Wang ◽  
Feng Zhu Yu ◽  
Zhong Fu Zhang
Keyword(s):  
Control System ◽  
Test System ◽  
Stability Control ◽  
Vehicle System ◽  
Vehicle Stability Control ◽  
Study Results ◽  
Braking Control ◽  
Set Up ◽  
Control Principle ◽  
Performance Research

The structure of the aid wheels braking control vehicle system is projected, and the system dynamic model is set up. Based on the Matlab/Simulink, establish the dynamic simulation system of the aid wheels braking control vehicle system 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 aid wheels braking control vehicle system in different simulation conditions, under steer and over steer. The study results indicate that, based on the aid wheels braking control vehicle system, when there is no ESP control or ESP control system failure, the system can ensure the safety of vehicle effectively; and when with ESP control system, the ESP control performances of the aid wheels braking control vehicle system and the vehicle system have remarkable consistency. The aid wheels braking control vehicle system provides a basis for the vehicle stability control performance research.

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