A car-steering problem with random adhesion coefficient

On car steering torques at parking speeds

The steering torque at the handwheel, necessary to steer a car at zero speed, is discussed. Measurements made on a tyre alone on a static rig and measurements made on a car in normal trim are complemented by a mathematical system model. The model uses parameter values deriving partly from the tyre rig results, partly from the car specification and partly from the car results. It provides simula...

Automatic Car Steering Using Robust Unilateral Decoupling

In this paper a steering controller is derived using robust unilateral decoupling control. By this method automatic car steering can be split into two subtasks: a) good lane tracking of a point mass for stepwise change of the curvature of the lane reference and for lateral force disturbances and b) good yaw stabilization in the presence of yaw torque disturbances. In the design process the trac...

Development of Four Wheel Steering System for a Car

Production cars are designed to understeer and rarely do they oversteer. If a car could automatically compensate for an understeer/oversteer problem, the driver would enjoy nearly neutral steering under varying operating conditions. Four-wheel steering is a serious effort on the part of automotive design engineers to provide near-neutral steering. Also in situations like low speed cornering, ve...

Constant Coefficient Tests for Random Coefficient Regression

Random coe cient regression models have been applied in di erent elds and they constitute a unifying setup for many statistical problems. The nonparametric study of this model started with Beran and Hall (1992) and it has become a fruitful framework. In this paper we propose and study statistics for testing a basic hypothesis concerning this model: the constancy of coe cients. The asymptotic be...

Generating Random Graphs with Tunable Clustering Coefficient