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

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Integrated Control of Vehicle Chassis Based on PID

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.644-650.25 ◽

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.

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Integrated Design for Steering System and Suspension

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.494-495.159 ◽

2014 ◽

Vol 494-495 ◽

pp. 159-162

Author(s):

En Guo Dong ◽

Lei Zhang ◽

Li Xue Liang

Keyword(s):

Simulation Model ◽

Ride Comfort ◽

Control Method ◽

Design Method ◽

Integrated Control ◽

Integrated Design ◽

Steering System ◽

Suspension System ◽

Vertical Acceleration ◽

Integrated Simulation

A design method of integrated control for suspension system and steering system is proposed based on vehicle ride comfort and handling stability. A car simulation model is built applying the software of MATLAB and ADAMS. The construction and characteristic of the integrated simulation model of the suspension system and steering system is illustrated in detail which uses fuzzy method and PID method. Using the simulation model, body vertical acceleration, roll angle and yaw angular velocity are measured in three status which include no control condition, the individually control for active suspension, and the integration control respectively. The simulation data show that the integrated control method synchronously ensures the ride comfort and handling stability.

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