Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Survey on fault-tolerant vehicle design
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Vehicle Dynamics.ORCID iD: 0000-0001-7427-2584
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Vehicle Dynamics.ORCID iD: 0000-0002-4048-3452
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Vehicle Dynamics.ORCID iD: 0000-0001-8928-0368
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Vehicle Dynamics.ORCID iD: 0000-0002-1426-1936
2012 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Fault-tolerant vehicle design is an emerging inter-disciplinary research domain, which is of increasedimportance due to the electrification of automotive systems. The goal of fault-tolerant systems is to handleoccuring faults under operational condition and enable the driver to get to a safe stop. This paperpresents results from an extended survey on fault-tolerant vehicle design. It aims to provide a holisticview on the fault-tolerant aspects of a vehicular system. An overview of fault-tolerant systems in generaland their design premises is given as well as the specific aspects related to automotive applications. Thepaper highlights recent and prospective development of vehicle motion control with integrated chassiscontrol and passive and active fault-tolerant control. Also, fault detection and diagnosis methods arebriefly described. The shift on control level of vehicles will be accompanied by basic structural changeswithin the network architecture. Control architecture as well as communication protocols and topologiesare adapted to comply with the electrified automotive systems. Finally, the role of regulations andinternational standardization to enable fault-tolerant vehicle design is taken into consideration.

Place, publisher, year, edition, pages
2012.
Keyword [en]
reliability, safety, wheel hub motor, diagnosis, control system, fault-tolerant control
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-98811Scopus ID: 2-s2.0-84877594122OAI: oai:DiVA.org:kth-98811DiVA: diva2:539161
Conference
26th Electric Vehicle Symposium, (EVS26), Los Angeles, CA, May 6-9, 2012
Funder
TrenOp, Transport Research Environment with Novel Perspectives
Note

Qc 20120730

Available from: 2012-07-30 Created: 2012-07-03 Last updated: 2015-05-20Bibliographically approved
In thesis
1. Faults and their influence on the dynamic behaviour of electric vehicles
Open this publication in new window or tab >>Faults and their influence on the dynamic behaviour of electric vehicles
2013 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The increase of electronics in road vehicles comes along with a broad variety of possibilitiesin terms of safety, handling and comfort for the users. A rising complexityof the vehicle subsystems and components accompanies this development and has tobe managed by increased electronic control. More potential elements, such as sensors,actuators or software codes, can cause a failure independently or by mutually influencingeach other. There is a need of a structured approach to sort the faults from avehicle dynamics stability perspective.This thesis tries to solve this issue by suggesting a fault classification method and faulttolerantcontrol strategies. Focus is on typical faults of the electric driveline and thecontrol system, however mechanical and hydraulic faults are also considered. Duringthe work, a broad failure mode and effect analysis has been performed and the faultshave been modeled and grouped based on the effect on the vehicle dynamic behaviour.A method is proposed and evaluated, where faults are categorized into different levelsof controllability, i. e. levels on how easy or difficult it is to control a fault for the driver,but also for a control system.Further, fault-tolerant control strategies are suggested that can handle a fault with acritical controllability level. Two strategies are proposed and evaluated based on thecontrol allocation method and an electric vehicle with typical faults. It is shown thatthe control allocation approaches give less critical trajectory deviation compared to noactive control and a regular Electronic Stability Control algorithm.To conclude, this thesis work contributes with a methodology to analyse and developfault-tolerant solutions for electric vehicles with improved traffic safety.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. x, 54 p.
Series
Trita-AVE, ISSN 1651-7660 ; 2013:48
Keyword
fault classification, vehicle dynamics, electric vehicle, failure, fault-tolerant control, reconfiguration, fault handling
National Category
Vehicle Engineering
Research subject
Järnvägsgruppen - Fordonsteknik
Identifiers
urn:nbn:se:kth:diva-131213 (URN)
Presentation
2013-10-18, Hugin, Teknikringen 8, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20131010

Available from: 2013-10-10 Created: 2013-10-09 Last updated: 2013-10-10Bibliographically approved
2. Controlling over-actuated road vehicles during failure conditions
Open this publication in new window or tab >>Controlling over-actuated road vehicles during failure conditions
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The aim of electrification of chassis and driveline systems in road vehicles is to reduce the global emissions and their impact on the environment. The electrification of such systems in vehicles is enabling a whole new set of functionalities improving safety, handling and comfort for the user. This trend is leading to an increased number of elements in road vehicles such as additional sensors, actuators and software codes. As a result, the complexity of vehicle components and subsystems is rising and has to be handled during operation. Hence, the probability of potential faults that can lead to component or subsystem failures deteriorating the dynamic behaviour of road vehicles is becoming higher. Mechanical, electric, electronic or software faults can cause these failures independently or by mutually influencing each other, thereby leading to potentially critical traffic situations or even accidents. There is a need to analyse faults regarding their influence on the dynamic behaviour of road vehicles and to investigate their effect on the driver-vehicle interaction and to find new control strategies for fault handling.

A structured method for the classification of faults regarding their influence on the longitudinal, lateral and yaw motion of a road vehicle is proposed. To evaluate this method, a broad failure mode and effect analysis was performed to identify and model relevant faults that have an effect on the vehicle dynamic behaviour. This fault classification method identifies the level of controllability, i.e. how easy or difficult it is for the driver and the vehicle control system to correct the disturbance on the vehicle behaviour caused by the fault.

Fault-tolerant control strategies are suggested which can handle faults with a critical controllability level in order to maintain the directional stability of the vehicle. Based on the principle of control allocation, three fault-tolerant control strategies are proposed and have been evaluated in an electric vehicle with typical faults. It is shown that the control allocation strategies give a less critical trajectory deviation compared to an uncontrolled vehicle and a regular electronic stability control algorithm. An experimental validation confirmed the potential of this type of fault handling using one of the proposed control allocation strategies.

Driver-vehicle interaction has been experimentally analysed during various failure conditions with typical faults of an electric driveline both at urban and motorway speeds. The driver reactions to the failure conditions were analysed and the extent to which the drivers could handle a fault were investigated. The drivers as such proved to be capable controllers by compensating for the occurring failures in time when they were prepared for the eventuality of a failure. Based on the experimental data, a failure-sensitive driver model has been developed and evaluated for different failure conditions. The suggested fault classification method was further verified with the conducted experimental studies.

The interaction between drivers and a fault-tolerant control system with the occurrence of a fault that affects the vehicle dynamic stability was investigated further. The control allocation strategy has a positive influence on maintaining the intended path and the vehicle stability, and supports the driver by reducing the necessary corrective steering effort. This fault-tolerant control strategy has shown promising results and its potential for improving traffic safety.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. xii, 84 p.
Series
TRITA-AVE, ISSN 1651-7660 ; 2015:23
Keyword
vehicle dynamics, vehicle safety, driver-vehicle interaction, failure analysis, wheel hub motor failure, over-actuation, fault-tolerant control
National Category
Vehicle Engineering
Research subject
Vehicle and Maritime Engineering
Identifiers
urn:nbn:se:kth:diva-166819 (URN)978-91-7595-597-1 (ISBN)
Public defence
2015-06-05, Kollegiesalen, Brinellvägen 8, KTH, Stockholm, 09:30 (English)
Opponent
Supervisors
Note

QC 20150520

Available from: 2015-05-20 Created: 2015-05-19 Last updated: 2015-05-20Bibliographically approved

Open Access in DiVA

Poster(1660 kB)412 downloads
File information
File name FULLTEXT01.pdfFile size 1660 kBChecksum SHA-512
98f418b56e70fb242a9a2e1647cfa21dd37d903b3d3594c498cf4565424efd414d04d77fe2c186b1de76f7d76d0fb02fb79cbdb0692c5cfdd342171ff2fb9538
Type fulltextMimetype application/pdf
fulltext(131 kB)626 downloads
File information
File name FULLTEXT02.pdfFile size 131 kBChecksum SHA-512
3573a6feaf0461b681ae271a1c0a7b18aab2141d3773a442d2c18c5c74e0dabcff11cc50f93d2b17d5a66e955d263f7dd7c70a641ff9b5e72f8f3cb2948c367e
Type fulltextMimetype application/pdf

Other links

ScopusConference website

Authority records BETA

Wanner, DanielStensson Trigell, AnnikaDrugge, LarsJerrelind, Jenny

Search in DiVA

By author/editor
Wanner, DanielStensson Trigell, AnnikaDrugge, LarsJerrelind, Jenny
By organisation
Vehicle Dynamics
Vehicle Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 1038 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

urn-nbn

Altmetric score

urn-nbn
Total: 753 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf