Estimation of vehicle velocity based on suspension signals

Author

Borner, Marcus ; Semmler, Sascha ; Isermann, Rolf

Author_Institution

Lab. of Control Eng. & Process Autom., Darmstadt Univ. of Technol., Darmstadt, Germany

fYear

2001

fDate

4-7 Sept. 2001

Firstpage

283

Lastpage

288

Abstract

An accurate estimation of the vehicle velocity is one of the greatest challenges in modern vehicle systems. The velocity is needed for the Antilock Braking System (ABS) and Traction Control System (TCS) as well as for the Electronic Stability Program (ESP) and cannot be measured directly. Using at least two fist sensors, which measure the vertical frequency component of a front wheel and the related rear wheel, the phase difference between both signals gives knowledge about the velocity of the vehicle. The presented algorithm is based on cross correlation function to estimate the velocity using the sensors described above. Different methods are described which improve both the resolution and the accuracy of the output signal v_ref.

Keywords

automobiles; braking; suspensions (mechanical components); traction; velocity measurement; wheels; ABS; ESP; TCS; antilock braking system; car; cross correlation function; electronic stability program; front wheel; modern vehicle systems; phase difference; suspension signals; traction control system; vehicle velocity estimation; vertical frequency component measurement; Acceleration; Correlation; Estimation; Sensors; Suspensions; Vehicles; Wheels; cross correlation; fault detection; global chassis control; redundancy; velocity estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (ECC), 2001 European

Conference_Location

Porto

Print_ISBN

978-3-9524173-6-2

Type

conf

Filename

7075920