A PCA-based Modeling Approach for Estimation of Road-tire Forces by In-tire Accelerometers
Sprache des Vortragstitels:
The 19th World Congress of the International Federation of Automatic Control
Sprache des Tagungstitel:
The knowledge of the forces acting between tire and road is crucial for modern vehicle control
systems. Typically, such forces are estimated on the basis of indirect measurements and rely on complex
mathematical models. Sensors embedded in the tire (e.g. accelerometers) offer the possibility of directly
reaching the area of the tire-road interaction, and of delivering signals during the wheel rotation. Such
signals reflect the tire state and the force exchanged between tire and road.
In this paper an innovative approach to estimate such forces is presented. It exploits the signal delivered
during the wheel rotation by an accelerometer glued to the inner side of the tire tread. The approach
consists in processing the signal by means of the Principal Component Analysis (PCA). The results
of experimental activities employing a real vehicle provide evidence to support the feasibility and the
soundness of the proposed approach.