A Study on Integrated Control for Four-Wheel Steering System to Enhance Vehicle Lateral Stability

2012 ◽  
Vol 466-467 ◽  
pp. 1285-1289
Author(s):  
Bin Yang ◽  
Mao Song Wan ◽  
Qing Hong Sun
Keyword(s):  
Integrated Control ◽  
Steering System ◽  
Dynamics Model ◽  
Lateral Dynamics ◽  
Yaw Rate ◽  
Design Paradigm ◽  
Nonlinear Dynamics Model ◽  
The Individual ◽  
Good Vehicle ◽  
Integrated Control System

This paper presents the design of integrated control for four-wheel steering (4WS) vehicle. A vehicle nonlinear dynamics model is built based on a lateral dynamics simplified linear model. A more accurate sideslip and yaw rate controller is used for lateral dynamics model of 4WS vehicle. Then a vehicle model based on the individual channel and partial decoupling design paradigm is identified from the vehicle dynamics. The sideslip and yaw rate controller is based on a linear multivariable combined with lateral dynamics model and the front and rear steering angles. The results of a stability analysis and simulations are presented to show that the 4WS integrated control system can markedly enhance good vehicle lateral maneuverability.

Control of Handling Stability in Four-Wheel Steering Vehicles Based on Individual Channel Design

2011 ◽  
Vol 480-481 ◽  
pp. 1074-1078 ◽  
Author(s):  
Bin Yang ◽  
Mao Song Wan ◽  
Qing Hong Sun
Keyword(s):  
Linear Model ◽  
Control Structure ◽  
Steering System ◽  
Steering Control ◽  
Channel Design ◽  
Lateral Dynamics ◽  
Yaw Rate ◽  
System A ◽  
Design Paradigm ◽  
The Individual

This paper presents a new steering control structure for vehicles equipped with four-wheel steering system. A linear model of the lateral dynamics is used in this paper. This control structure is based on a simplified linear model of the lateral dynamics of such vehicles and aims to decouple the control of sideslip from the control of yaw rate. The control design is based on a linear multivariable plant and the front and rear steering angles, According to the Individual Channel Design paradigm. The proposed control structure has been applied to design sideslip and yaw rate controllers using a more accurate model of the lateral dynamics of four-wheel steering vehicles. Simulations are used to illustrate the performance and robustness of the designed controllers.

The Integrated Control of Semi-Active Suspension and Electronic Stability Program Based on Fuzzy Logic Method

2010 ◽  
Vol 29-32 ◽  
pp. 2059-2064
Author(s):  
Jian Hua Guo ◽  
Liang Chu ◽  
Xiao Bing Zhang ◽  
Fei Kun Zhou
Keyword(s):  
Fuzzy Logic ◽  
Integrated Control ◽  
Integrated System ◽  
Ride Quality ◽  
Electronic Stability Program ◽  
Vehicle Handling ◽  
Logic Control ◽  
Fuzzy Logic Method ◽  
The Individual ◽  
Integrated Control System

In this paper, an integrated system of SAS/ESP is proposed to improve vehicle handling performance and stability. The 15DOF vehicle model which describes the dynamics of the integrated system is established. A fuzzy logic control strategy is presented to control the integrated system. The simulation results show that the integrated control system can obviously improve vehicle maneuverability and ride quality much more than the individual control.

Integrated Vehicle Dynamic Control Through Coordinating Control of Steering and Suspension System

2005 ◽  
Author(s):  
Wuwei Chen ◽  
Hansong Xiao ◽  
Liqiang Liu ◽  
Jean W. Zu
Keyword(s):  
Control System ◽  
Ride Comfort ◽  
Integrated Control ◽  
Electrical Power ◽  
Dynamic Control ◽  
Steering System ◽  
Suspension System ◽  
Optimal Control Strategy ◽  
Vehicle Performance ◽  
Integrated Control System

This paper addresses the problem of integrated control of Electrical Power Steering System (EPS) and Active Suspension System (ASS). Through integrating EPS with ASS, a full car dynamic model is established. Based on the integrated model, a random sub-optimal control strategy based on output feedback is designed to fulfill the integrated control of both EPS and ASS. The characteristics of the integrated control system are analyzed using Matlab/Simulink and a series of comparisons are made with the system without control and the ASS-only/EPS-only system. The simulation results show that the integrated control scheme can not only enhance the steering quality, but also significantly isolate the road excitation. Moreover, the integrated control system has a great improvement on anti-roll and anti-pitch abilities. The proposed research provides a theoretical solution for simultaneously improving the multiple vehicle performance indices including maneuverability, handling stability, ride comfort, and safety.

Integrated Control of Vehicle Chassis Based on PID

2014 ◽  
Vol 644-650 ◽  
pp. 25-28
Author(s):  
En Guo Dong ◽  
Jie Xuan Lou ◽  
Lei Zhang
Keyword(s):  
Control System ◽  
Control Method ◽  
Integrated Control ◽  
Dynamic Performance ◽  
Steering System ◽  
System Control ◽  
Vehicle Performance ◽  
Vehicle Chassis ◽  
Integrated Control System ◽  
Better Than

In control system of vehicle chassis, two integrated control sub-systems of chassis have achieved some better results than a single sub-system control. However the two integrated sub-system control can not improve some dynamic performance on vehicle when other sub-system of chassis is disturbed. In order to improve vehicle dynamic performance of some sub-system, an integrated control method based on multi-system with suspension, steering system and brake system is designed. In the model, a 14-DOF vehicle model is used, and an integrated control method based on multi-system of chassis is designed in software of Matlab/Simulink with an integrated controller of PID. Simulation results show that the overall vehicle performance based on the three integrated control systems of chassis is better than those of two integrated control system.

scholarly journals Enhancing lateral dynamic performance of all-terrain vehicles using variable-wheelbase chassis

2020 ◽  
Vol 12 (5) ◽  
pp. 168781402091777
Author(s):  
Wen-Hao Wang ◽  
Xiao-Jun Xu ◽  
Hai-Jun Xu ◽  
Fa-Liang Zhou
Keyword(s):  
Working Conditions ◽  
Dynamic Performance ◽  
Numerical Calculations ◽  
Dynamics Model ◽  
Lateral Dynamics ◽  
Yaw Rate ◽  
Lateral Disturbance ◽  
Vehicle Chassis ◽  
Yaw Moment ◽  
Vehicle Lateral Dynamics

A six-wheel vehicle chassis scheme with a variable wheelbase is proposed to improve the lateral dynamic performance of vehicles. The yaw moment is varied by changing the wheelbase to enhance the lateral dynamic performance of the vehicle. A vehicle lateral dynamics model is established using this approach. The effects of the wheelbase variation on the lateral yaw rate gain, steering stability, and steering error are analysed via numerical calculations. A strategy for wheelbase variation under different working conditions is proposed to enhance the lateral dynamic performance. In addition, by studying the response of the vehicle to various lateral disturbance forces, it is verified that the wheelbase change can enhance the lateral anti-disturbance capability of the vehicle. The simulation verifies the effectiveness of the wheelbase change strategy under a variety of driving conditions.

Establishment and comparison of a spatial dynamics model for virtual track train with different steering modes

2021 ◽  
pp. 146441932110240
Author(s):  
Zhonghui Yin ◽  
Jiye Zhang ◽  
Haiying Lu
Keyword(s):  
Pid Controller ◽  
Dynamic Performance ◽  
Spatial Dynamics ◽  
Steering System ◽  
Front Wheel ◽  
Proportional Integral Derivative ◽  
Dynamics Model ◽  
Proposed Model ◽  
Suspension Control ◽  
Curved Section

To solve the urbanization and the economic challenges, a virtual track train (VTT) transportation system has been proposed in China. To evaluate the dynamic behavior of the VTT, a spatial dynamics model has been developed that considers the suspension system and the steering system. Additionally, the model takes into account road irregularity to make simulations more realistic. Based on the newly proposed dynamic model and a designed proportional–integral–derivative (PID) controller, simulation frames of the vehicle and of the VTT are established with the path-tracking performance. The results show that the vehicle and the VTT can run along a desired lane with allowable errors, verifying the proposed model. The vehicle and VTT with the four-wheel steering system show a better dynamic performance than the models with the front-wheel steering system in the curved section. Moreover, the simulation frame can be further applied to dynamics-related assessments, parameter optimization and active suspension control strategy.

Differential steering-based electric vehicle lateral dynamics control with rollover consideration

2019 ◽  
Vol 234 (3) ◽  
pp. 338-348
Author(s):  
Hui Jing ◽  
Rongrong Wang ◽  
Cong Li ◽  
Jinxiang Wang
Keyword(s):  
Electric Vehicles ◽  
Measurement Problem ◽  
Low Cost ◽  
Steering System ◽  
Front Wheel ◽  
Steering Control ◽  
Lateral Velocity ◽  
Lateral Dynamics ◽  
Vehicle Rollover ◽  
Differential Steering

This article investigates the differential steering-based schema to control the lateral and rollover motions of the in-wheel motor-driven electric vehicles. Generated from the different torque of the front two wheels, the differential steering control schema will be activated to function the driver’s request when the regular steering system is in failure, thus avoiding dangerous consequences for in-wheel motor electric vehicles. On the contrary, when the vehicle is approaching rollover, the torque difference between the front two wheels will be decreased rapidly, resulting in failure of differential steering. Then, the vehicle rollover characteristic is also considered in the control system to enhance the efficiency of the differential steering. In addition, to handle the low cost measurement problem of the reference of front wheel steering angle and the lateral velocity, an [Formula: see text] observer-based control schema is presented to regulate the vehicle stability and handling performance, simultaneously. Finally, the simulation is performed based on the CarSim–Simulink platform, and the results validate the effectiveness of the proposed control schema.

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