Abstract
Keywords:
Vehicle dynamics, tyre, camber angle, measurement.
Abstract:
Within the framework of vehicle dynamics, the integration into the global vehicle model of a model describing its interaction with the ground is vital. This paper focuses on the accurate measurement of the camber angle which is one of the main inputs of tyre models. Considering the different existing approaches, the direct measurement of the rim angle using a wheel-mounted device following the rim movements has been chosen and is presented here. The developed measuring principle consists in fitting three accurate laser distance sensors to a plate connected to the rim through ball-bearings. The laser sensors are oriented so as to measure three distances between the rim-parallel-plate and the road. These distances are then used to estimate the camber angle between this plate and the road-normal plane. Dynamic tests with the laboratory test car have been carried out and the results obtained are discussed.