liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Virtual Vehicle Pitch Sensor
Linköping University, Department of Electrical Engineering.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

An indirect tire pressure monitoring system uses the wheel rolling radius as an indicator of low tire pressure. When extra load is put in the trunk of a car, the load distribution in the car will change. This will affect the rolling radius which in its turn will be confused with a change in the tire pressure. To avoid this phenomenon, the load distribution has to be estimated. In this thesis methods for estimating the pitch angle of a car and an offset in the pitch angle caused by changed load distribution are presented and when an estimate is derived, a load distribution can be derived. Alot of available signals are used but the most important are the longitudinal accelerometer signal and the acceleration at the wheels derived from the velocity of the car. A few ways to detect or compensate for a non-zero road grade are also presented. Based on the estimated offset, a difference between the front and rear axle heights in the vehicle can be estimated and compensating for the changed load distribution in an indirect tire pressure monitoring system will be possible.

Place, publisher, year, edition, pages
2011. , 52 p.
Keyword [en]
Load distribution, Pitch angle offset, Longitudinal accelerometer, Road grade, Axle height
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-69944ISRN: LiTH-ISY-EX--11/4472--SEOAI: diva2:433280
Subject / course
Automatic Control
Available from: 2011-08-09 Created: 2011-08-09 Last updated: 2011-11-29Bibliographically approved

Open Access in DiVA

Thesis_HB(881 kB)280 downloads
File information
File name FULLTEXT01.pdfFile size 881 kBChecksum SHA-512
Type fulltextMimetype application/pdf

By organisation
Department of Electrical Engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 280 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 163 hits
ReferencesLink to record
Permanent link

Direct link