This paper presents the design of a H∞ controller dedicated to the lateral driving assistance including lane keeping and yaw dynamic enhancement. It is used to add a steering torque to that of the driver in order to improve the rejection of external disturbances (such as lateral wind) despite uncertainties such as road adhesion, longitudinal velocity, and driver dynamics. The simulation results...

The paper addresses the robust design of a lateral stability controller for ground vehicles. Nonlinear vehicle dynamics are modeled by an approximate hybrid piecewise–affine model. Control of the vehicle yaw rate and lateral velocity of the center of gravity is achieved through steering and four wheels independent braking. Uncertainty in actuation is explicitly taken into account by introducing...

This paper evaluates EPS control strategies for improving vehicle handling and steering feel during high speed avoidance maneuver. Theoretical analysis of frequency response of steering angle and vehicle lateral acceleration relative to steering torque input is performed. Closed-loop simulation studies are also conducted by adopting a driver model to describe the human steering behavior. Based ...

In this paper, the composite nonlinear feedback (CNF) technique is applied for yaw tracking control of active front steering system with the objectives to improve the transient performance of yaw rate response. For lateral and yaw dynamics analysis, nonlinear and linear vehicle models are utilized as actual vehicle plant and for controller design respectively. The designed controller is evaluat...

Traction control system (TCS) comprises the slip control subsystem and the directional stability subsystem. The slip controller can enhance the traction performance by maintaining the slipratio within a proper range. Additional information about the lateral behavior of the vehicle is necessary to enhance the directional stability during the cornering or lane change on the slippery roads. With a...

In this work, an optimal control scheme with adaptive weighting coefficients is presented which coordinates different vehicle dynamics control objectives, thus ruling out possible conflicts among them. In a new approach, the weighting coefficients in optimal control are adjusted according to the vehicle state in the phase plane in such a way that a priority is given to each objective of handlin...

A Steer-By-Wire (SBW) control scheme is proposed for enhancing the lateral stability and handling capability of a super lightweight vehicle by using the energy optimal control method. Tire dissipation power and virtual power, which is the product of yaw moment and the deviation of actual yaw rate from the target yaw rate, were selected as performance measures to be minimized. The SBW control sc...