ABSTRACT

ABSTRACT: This paper presents analytical research work on a new wheel rotational kinematics sensor concept as a part of agile tyre dynamics estimation and control. Unlike traditional Halleffect digital sensors, the signal in the proposed concept is continuously read as an analog signal. This significantly reduces a lag in the sensor reading update and thus makes information on wheel kinematic parameters available much faster for an estimation and control system. The paper gives a detailed mathematical model of mechanical and electro-magnetic domains of the new sensor as well as an analysis of its signal processing; mathematical models of two digital sensors are also presented. Computational results of the new sensor and the digital sensors virtually installed on a quarter-car model are presented to illustrate advantages of the new sensor concept.