Integrated LQR Control of Automobile Anti-Rollover System and Electrical Power Steering System

2014 ◽  
Vol 505-506 ◽  
pp. 349-355 ◽  
Author(s):  
Cong Liao ◽  
Xin Ye Wu ◽  
Hong Wu Huang ◽  
Qiu Fang
Keyword(s):  
Control System ◽  
Electric Power ◽  
Active Suspension ◽  
Steering System ◽  
System Model ◽  
Optimal Control Strategy ◽  
Electric Power Steering ◽  
Power Steering System ◽  
Power Steering ◽  
Electric Power Steering System

Based on the interference characteristics of the active suspension anti-rollover control system and electric power steering system, combining vehicle active suspension anti-rollover control system model, electric power steering system model and the steering model, the automobile system dynamic model was established. The optimal control strategy of LQR(linear quadratic regulator) was designed, and integrated control system of the anti-rollover control system and electric power steering was realized. Under Matlab/Simulink, the simulation was done and the results show that the presented control scheme can improve handiness of electric power steering system, and has a good anti-roll and anti-pitch ability.

Design and Stabilization Analysis of the Parabola-Type Assistance Characteristic of Electric Power Steering System

2013 ◽  
Vol 779-780 ◽  
pp. 556-559 ◽  
Author(s):  
Guo Qing Geng
Keyword(s):  
Control System ◽  
Electric Power ◽  
Computer Control ◽  
Steering System ◽  
Computer Control System ◽  
Electric Power Steering ◽  
Power Steering System ◽  
Curve Type ◽  
Power Steering ◽  
Electric Power Steering System

In order to realize the curve-type assistance characteristic of the electric power steering system , the parabola-type assistance characteristic is brought out, and realizing it by designing the electric power steering system which is controlled by computer. And then math model of computer control system is constructed, and adopting Z-transform to analysis the stabilization of the system. The result shows that computer control system can realize the curve-type assistance characteristic.

Fast fault-tolerant control of electric power steering systems in the presence of actuator fault

2018 ◽  
Vol 233 (12) ◽  
pp. 3088-3097 ◽  
Author(s):  
Manel Allous ◽  
Kais Mrabet ◽  
Nadia Zanzouri
Keyword(s):  
Electric Power ◽  
Electric Motor ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Steering System ◽  
Adaptive Observer ◽  
Electric Power Steering ◽  
Power Steering System ◽  
Power Steering ◽  
Electric Power Steering System

Electric power steering is an advanced steering system that uses an electric motor to improve steering comfort of the car. As a result, the failures in the electric motor can lead to additional fault modes and cause damage of the electric power steering system performance. Hence, to ensure the stability of this latter, the present paper proposes a new method to reconfigure the fault control. A novelty approach of fast fault estimation based on adaptive observer is also proposed. Moreover, to guarantee optimal and fast control, a fault-tolerant control based on inverse bond graph modeling is designed to construct the behavior of the nominal system. The simulation and the experimental results on a real electric power steering system reveal the importance of the control strategy and show that the proposed approach works as intended.

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