Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Faults and their influence on the dynamic behaviour of electric vehicles
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, Fordonsdynamik.ORCID-id: 0000-0001-7427-2584
2013 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
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.

sted, utgiver, år, opplag, sider
Stockholm: KTH Royal Institute of Technology, 2013. , s. x, 54
Serie
Trita-AVE, ISSN 1651-7660 ; 2013:48
Emneord [en]
fault classification, vehicle dynamics, electric vehicle, failure, fault-tolerant control, reconfiguration, fault handling
HSV kategori
Forskningsprogram
Järnvägsgruppen - Fordonsteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-131213OAI: oai:DiVA.org:kth-131213DiVA, id: diva2:654994
Presentation
2013-10-18, Hugin, Teknikringen 8, KTH, Stockholm, 10:00 (engelsk)
Opponent
Veileder
Merknad

QC 20131010

Tilgjengelig fra: 2013-10-10 Laget: 2013-10-09 Sist oppdatert: 2013-10-10bibliografisk kontrollert
Delarbeid
1. Survey on fault-tolerant vehicle design
Åpne denne publikasjonen i ny fane eller vindu >>Survey on fault-tolerant vehicle design
2012 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

Emneord
reliability, safety, wheel hub motor, diagnosis, control system, fault-tolerant control
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-98811 (URN)2-s2.0-84877594122 (Scopus ID)
Konferanse
26th Electric Vehicle Symposium, (EVS26), Los Angeles, CA, May 6-9, 2012
Forskningsfinansiär
TrenOp, Transport Research Environment with Novel Perspectives
Merknad

Qc 20120730

Tilgjengelig fra: 2012-07-30 Laget: 2012-07-03 Sist oppdatert: 2015-05-20bibliografisk kontrollert
2. Fault classification method for the driving safety of electrified vehicles
Åpne denne publikasjonen i ny fane eller vindu >>Fault classification method for the driving safety of electrified vehicles
2014 (engelsk)Inngår i: Vehicle System Dynamics, ISSN 0042-3114, E-ISSN 1744-5159, Vol. 52, nr 5, s. 704-732Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A fault classification method is proposed which has been applied to an electric vehicle. Potential faults in the different subsystems that can affect the vehicle directional stability were collected in a failure mode and effect analysis. Similar driveline faults were grouped together if they resembled each other with respect to their influence on the vehicle dynamic behaviour. The faults were physically modelled in a simulation environment before they were induced in a detailed vehicle model under normal driving conditions. A special focus was placed on faults in the driveline of electric vehicles employing in-wheel motors of the permanent magnet type. Several failures caused by mechanical and other faults were analysed as well. The fault classification method consists of a controllability ranking developed according to the functional safety standard ISO 26262. The controllability of a fault was determined with three parameters covering the influence of the longitudinal, lateral and yaw motion of the vehicle. The simulation results were analysed and the faults were classified according to their controllability using the proposed method. It was shown that the controllability decreased specifically with increasing lateral acceleration and increasing speed. The results for the electric driveline faults show that this trend cannot be generalised for all the faults, as the controllability deteriorated for some faults during manoeuvres with low lateral acceleration and low speed. The proposed method is generic and can be applied to various other types of road vehicles and faults.

sted, utgiver, år, opplag, sider
Taylor & Francis, 2014
Emneord
Vehicle safety, vehicle dynamics, fault analysis, fault classification, electric vehicles, ISO 26262
HSV kategori
Forskningsprogram
Farkostteknik
Identifikatorer
urn:nbn:se:kth:diva-131222 (URN)10.1080/00423114.2014.889317 (DOI)000337583100006 ()2-s2.0-84901643352 (Scopus ID)
Merknad

QC 20140509. Updated from manuscript to article in journal

Funder: Swedish Hybrid vehicle Center

Tilgjengelig fra: 2013-10-10 Laget: 2013-10-10 Sist oppdatert: 2017-12-06bibliografisk kontrollert
3. Fault-Tolerant Control of Electric Vehicles with In-Wheel Motors through Tyre-Force Allocation
Åpne denne publikasjonen i ny fane eller vindu >>Fault-Tolerant Control of Electric Vehicles with In-Wheel Motors through Tyre-Force Allocation
Vise andre…
2012 (engelsk)Inngår i: Proceedings of the 11th International Symposium on Advanced Vehicle Control, Seoul: Japan Society of Mechanical Engineers (JSAE) , 2012Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

This paper presents a fault handling strategy for electric vehicles with in-wheel motors. The ap-plied control algorithm is based on tyre-force allocation. One complex tyre-force allocation meth-od, which requires non-linear optimization, as well as a simpler tyre force allocation method are developed and applied. A comparison between them is conducted and evaluated against a standard reference vehicle with an Electronic Stability Control (ESC) algorithm. The faults in consideration are electrical faults that can arise in in-wheel motors of permanent-magnet type. The results show for both tyre-force allocation methods an improved re-allocation after a severe fault and thus re-sults in an improved state trajectory recovery. Thereby the proposed fault handling strategy be-comes an important component to improve system dependability and secure vehicle safety.

sted, utgiver, år, opplag, sider
Seoul: Japan Society of Mechanical Engineers (JSAE), 2012
Emneord
Fault-Tolerant Control, Force Allocation, Integrated Chassis Control
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-98810 (URN)
Konferanse
11th International Symposium on Advanced Vehicle Control, 9 - 12 September 2012, Seoul, Korea
Forskningsfinansiär
StandUpTrenOp, Transport Research Environment with Novel Perspectives
Merknad

QC 20130611

Tilgjengelig fra: 2012-07-03 Laget: 2012-07-03 Sist oppdatert: 2014-06-18bibliografisk kontrollert

Open Access i DiVA

Licentiate Summary Daniel Wanner(1068 kB)1354 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 1068 kBChecksum SHA-512
1c0162635e3bdcbdffb53fac47fa03259dadbc8a6a7331378a5717e3d2d9add985ef500296e302d88e8fbc65969c1e183e3d31daea5ad8d04799d733b82efb8e
Type fulltextMimetype application/pdf

Personposter BETA

Wanner, Daniel

Søk i DiVA

Av forfatter/redaktør
Wanner, Daniel
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 1354 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

urn-nbn

Altmetric

urn-nbn
Totalt: 877 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf