Tyre pressure monitoring using a dynamical model-based estimator

Abstract

In the last few years, various control systems have been investigated in the automotive field with the aim of increasing the level of safety and stability, avoid roll-over, and customise handling characteristics. One critical issue connected with their integration is the lack of state and parameter information.As an example, vehicle handling depends to a large extent on tyre inflation pressure. When inflation pressure drops, handling and comfort performance generally deteriorate. In addition, it results in an increase in fuel consumption and in a decrease in lifetime. Therefore, it is important to keep tyres within the normal inflation pressure range. This paper introduces a model-based approach to estimate online tyre inflation pressure. First, basic vertical dynamic modelling of the vehicle is discussed. Then, a parameter estimation framework for dynamic analysis is presented. Several important vehicle parameters including tyre inflation pressure can be estimated using the estimated states. This method aims to work during normal driving using information from standard sensors only. On the one hand, the driver is informed about the inflation pressure and he is warned for sudden changes. On the other hand, accurate estimation of the vehicle states is available as possible input to onboard control systems.

Terrain estimation via vehicle vibration measurement and cubature Kalman filtering

“…Vehicle ride response is usually studied by referring to a quarter-car (QC) model (Reina et al 2015). However, the standard QC model neglects the deformability of the supporting surface, and its applicability is limited to the traverse of hard terrain.…”

On the vibration analysis of off-road vehicles: Influence of terrain deformation and irregularity

“…The vertical motion induced by road irregularities directly influences comfort and handling performance of a vehicle (Reina et al., 2015). A classical “QC” model can be considered, as illustrated in Figure 5.…”

Assessing the Impact of the Change in the Tire Pressure on the Rolling Resistance and Fuel Consumption

“…The value of tire pressure affects its stiffness [1,2], lifespan as well as the vehicle stopping distance [3,4,5], its directional stability and performance while running [6, 7, 8,]; additionally, it influences the noisiness of driving [9,10], the value of rolling resistance together with the value of fuel consumption [11,12] and many other aspects that affect the level of driving safety and economy [13,14,15]. Such value of tire pressure is not stable, since it varies throughout its lifetime according to various factors.…”