In this paper, the design and development of the Delphi Driver Protection Module (DDPM) using a systems and virtual engineering approach is presented. LS-DYNA software tool was used in virtual prototype studies. The DDPM consists of driver side energy absorbing components. The components included in this module are 1) an adaptive Energy Absorbing (EA) steering column, 2) driver air bag, 3) stee...

Steer-by-wire system (SBW), in which the conventional mechanical linkages between the steering wheel and the front wheel are removed, is suited to active steering control, improving vehicle stability, dynamics and maneuverability. And SBW is applied to autonomous steering control to assist the driver. Conventional controller for SBW system is designed by general feedback control method. However...

A recursive least square RLS algorithm for estimation of vehicle sideslip angle and road friction coefficient is proposed. The algorithm uses the information from sensors onboard vehicle and control inputs from the control logic and is intended to provide the essential information for active safety systems such as active steering, direct yaw moment control, or their combination. Based on a simp...

Conventional angle sensors can measure only 360°,but passenger car steering wheel turns through +/-720 (a total of 4 complete turns). In this paper we describe iGMR based steering wheel angle sensor implementation which can be used as a rotation sensor to measure +/720°. KeywordSteering Wheel Angle Sensor, IGMR, Angle Sensor, GMR.

This thesis presents new results in the design and the integration of the active front/rear steering control with front/rear electronic differential in four wheel drive and steering vehicles; an application to vision based autonomous lane keeping control is also deployed. In four wheel steering vehicles it is shown that the lateral speed and yaw rate dynamics can be asymptotically decoupled by ...

This thesis presents a compilation of methods to consider when mapping steering functions and results as vehicle dimensions change. It is concluded that some final tuning inevitably will be required as major changes are performed. It is however possible to create qualified starting points using a set of simple rules as presented. Considered properties are steering wheel size, wheelbase, steerin...

The paper presents a fault tolerant control (FTC) strategy for maintaining the lateral stability of a 4WS4WD autonomous vehicle in presence of an unknown component fault. It is designed using the flatness theory and the backstepping technique, and consists in actively controlling the vehicle’s rearwheel steering system. In a normal situation, only the front-wheel steering actuator is used since...

Considering driving safety and comfort, this paper proposed a roll and yaw integrated control method utilizing four wheel steering based on disturbance observer (hereinafter DOB) and 2-degree-of-freedom (hereinafter 2DOF) control approach. Firstly, vehicle model for controller design as well as the desired roll and yaw motion were explained; then the controller design was carried out based on t...

Most terrestrial vehicles are steered via a first-order control for vehicle heading, such as a conventional steering wheel. A joystick which provides second-order control of vehicle heading is used to steer some underground coal shuttle cars. A desktop virtual simulation of the situation was employed to compare the steering accuracy of 24 novice participants randomly assigned to either first-or...

Shuttle cars are an unusual class of vehicle in operation in underground coal mines. A directional control-response incompatibility has previously been described in some models which are steered using a steering wheel oriented perpendicular to the direction of travel. Other models are steered via a joystick. A virtual simulation of a joystick steered shuttle car was utilised to determine whethe...