differential steering of in-wheel electric vehicle provides the functions of both active steering and power assisted steering with the coupling control of force and displacement transfer characteristic of system. a collaborative optimization model of the differential power-assisted steering system of in-wheel electric vehicle is built, with steering economy as the main system optimization goal,...

In this paper, kinetic and kinematic modeling of a 4 wheel steering vehicle is done and its movement is controlled in an optimal way using Linear Quadratic Regulator (LQR). The results are compared with the same control of two-wheel steering case and the advantages are analyzed. In 4 wheel steering vehicles which are nowadays more applicable the number of controlling actuators are more than the...

This paper discuses sensor steering mechanism (SSM) for a laterally guided vehicle with a rear wheel steering mechanism. The authors have demonstrated the geometry of SSMs for front wheel steering type and reverse phase four-wheel steering type vehicles. SSMs allow stable lateral guiding performance for automated vehicles following a path with straight and curved portions created by a guideway....

This paper proposes SSM(Sensor Steering Mechanism) for lateral guided vehicle with rear wheel steering mechanism. Authors demonstrated the geometry of SSM for the front wheel steer type and the reverse phase four-wheel steer type one. SSM presents a stable lateral guiding performance for automated vehicle which follows a straight and curved path created by guideway. The other hand, SSM is not e...

Steer-By-Wire ( SBW ) has several advantages of packaging flexibility , advanced vehicle control system ,and superior performance . SBW has no mechanical linkage between the steering gear and the steering column. It is possible to control the steering wheel and the front-wheel steering independently. SBW system is composed of two motors controlled by ECU. One motor in the steering wheel is to i...

The paper presents a cross-coupling controller for a four-wheel steering mobile robot with independently actuated steering and driving of each wheel. The aim of the controller is to minimize slippage during transient states of the vehicle control. Linear approximation of the criterion for no slippage is adopted for the design of the LQR-based cross-coupling controller of steering actuators. Dri...

Since car manufacturers pursue in the development of environmental -friendly vehicle, the demand for extensive research on stability, controllability, and reliability of electric vehicles (EVs) increases. Electric powered and by-wire control technology allow manufacturers to build independent four -wheel steering of an allwheel drive in-wheel EV. In past research, we investigated the advantages...

A self-propelled agricultural sprayer was modified to enable both front and rear wheel steering through electrohydraulic control valves. These modifications, in conjunction with a digital controller, enabled the vehicle to be four-wheel steered in multiple modes. The research focused on modeling and evaluating the effect of multi-mode four-wheel steering on vehicle handling characteristics and ...

What are the differences between two wheel steering and four wheel steering? The aim of this project is to compare these two in terms of advantages gained from four wheel steering. A simulation is conducted on ADAMS Cars platform based on the RCV (Research Concept Vehicle) model, developed at KTH in Stockholm. Sammanfattning Vad är skillnaden mellan tvåhjulsstyrning och fyrhjulsstyrning? Syftet...

The development of Integrated Chassis Control (ICC) systems is a major area of current interest in automotive research. Roughly speaking, research on this topic has been motivated by the desire for increased vehicle safety, increased comfort, and better performance by taking into account and utilising the interactions that exists between the different subsystems of the vehicle. While research o...