04877nam 2200373 450 991064726290332120230324113634.03-8325-5578-1(CKB)5580000000512028(NjHacI)995580000000512028(EXLCZ)99558000000051202820230324d2022 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierAnalysis and Optimisation of a New Differential Steering Concept /Márton KuslitsBerlin, Germany :Logos Verlag Berlin GmbH,2022.1 online resource (147 pages) illustrationsList of Symbols and Acronyms IX -- 1 Introduction 1 -- 1.1 State of the Art in Differential Steering 3 -- 1.2 Motivation and Outline of the Thesis 6 -- 2 Vehicle Model with Differential Steering 9 -- 2.1 Model Definition and Kinematics 10 -- 2.2 Nonlinear Equations of Motion 15 -- 2.3 Tyre Models 18 -- 2.3.1 Modelling Considerations and Tyre Model Selection 18 -- 2.3.2 The Magic Formula Tyre Model 19 -- 2.3.3 Bore Torque Modelling 24 -- 2.3.4 Load Distribution and Load Transfer 27 -- 3 Symbolic Linearisation of Equations of Motion 29 -- 3.1 Symbolic Taylor Expansion 30 -- 3.2 State Reduction 34 -- 3.3 Representation in the Frequency Domain 35 -- 3.4 Application to the Vehicle Model 36 -- 3.4.1 Symbolic Manipulations on the Vehicle Model 36 -- 3.4.2 Validation of the Linearised Model 42 -- 4 Control of the Differential Steering System 45 -- 4.1 Full State Feedback Lateral Control for High-Speed Operation 45 -- 4.1.1 Closed-Loop System 46 -- 4.1.2 Feedback Gain Calculation Using the LQ-Principle 47 -- 4.1.3 Feedforward Gain Calculation 48 -- 4.1.4 Reference Model 49 -- 4.1.5 Gain Scheduling Extension 50 -- 4.2 Angle Tracking Controller for Low-Speed Operation 50 -- 4.2.1 PI Control Rule 51 -- 4.2.2 Control Design with Root Locus Method 51 -- 5 Simulations and Steering Characterisation 55 -- 5.1 Simulation Framework 55 -- 5.2 Simulation Studies 56 -- 5.2.1 Step Steer Simulation 56 -- 5.2.2 Steady-State Cornering 59 -- 5.2.3 Double Lane Change 61 -- 5.2.4 Low-Speed Manoeuvring 62 -- 5.3 Steering Performance Characterisation 63 -- 5.3.1 Dynamic Performance in the Time Domain 64 -- 5.3.2 Tracking Performance in the Frequency Domain 65 -- 5.3.3 Steady-State Cornering Performance 68 -- 5.3.4 Low-Speed Manoeuvring Performance 69 -- 6 Multi-Objective Steering Performance Optimisation 71 -- 6.1 Design Parametrisation 72 -- 6.2 Sensitivity Studies 73 -- 6.2.1 Preselection of Control Parameter τd 73 -- 6.2.2 Identification of the Most Influential Parameters 74 -- 6.3 Optimisation Strategy 79 -- 6.3.1 Formulation of the Optimisation Problem 79 -- 6.3.2 Optimisation Assistance by Response Surfaces 80 -- 6.3.3 Optimisation Procedure 82 -- 6.4 Discussion of Optimisation Results 86 -- 7 Disturbance Rejection of the Differential Steering System 91 -- 7.1 Wheel-Curb Collision Model 92 -- 7.2 Simulation Framework for Collision Investigations 96 -- 7.3 Collision Simulations 98 -- 8 Conclusions and Outlook 101 -- Appendix: Detailed Results of Model Derivation 103 -- A.1 Kinematics 103 -- A.2 Equations of Motion 108 -- A.3 Constraints 115 -- List of Figures 117 -- List of Tables 121 -- References 123.The emergence of electric drives opens up new opportunities in vehicle design. For example, powerful in-wheel motors pro -vide unprecedented flexibility in chassis design and are suitable for distributed drive solutions, although implying non-trivial vehicle dynamics control problems. This work aims at a new differential steering concept relying only on passive steering linkages where the necessary steering moment about the kingpins is generated by traction force differences produced by in-wheel motors. For the analysis of the proposed steering concept, a tailored multi-body system model is introduced along with the associated steering control system. In addition, this work explores the general applicability of such a new steering concept by using multi-objective optimisation. For this purpose, various design objectives and constraints are defined with respect to the dynamic, steady-state and low-speed steering performance of the vehicle. The resulting behaviour of the proposed steering concept is investigated by various simulation experiments demonstrating a comparable steering performance to that of conventional passenger cars.Electric vehiclesSteering-gearElectric vehicles.Steering-gear.623.862Kuslits Márton1348868NjHacINjHaclBOOK9910647262903321Analysis and Optimisation of a New Differential Steering Concept3086552UNINA03268nam 2200493 450 991081019300332120230721041715.01-4744-7017-310.1515/9781474470179(CKB)4100000010653670(MiAaPQ)EBC6141824(DE-B1597)616497(DE-B1597)9781474470179(OCoLC)1306538730(EXLCZ)99410000001065367020200621d2009 uy 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierIslamic aesthetics an introduction /Oliver LeamanEdinburgh :Edinburgh University Press,2009.1 online resource (220 pages)New Edinburgh Islamic surveys0-7486-1734-5 Frontmatter -- Contents -- Foreword -- Introduction -- 1. Eleven common mistakes about Islamic art -- 2. God as creator, calligraphy and symbolism -- 3. Religion, style and art -- 4. Literature -- 5. Music -- 6. Home and garden -- 7. The miraculousness of the Qur'an -- 8. Philosophy and ways of seeing -- 9. Interpreting art, interpreting Islam, interpreting philosophy -- Notes -- Bibliography -- Further reading -- Glossary -- Index of Qur'anic passages -- IndexGBS_insertPreviewButtonPopup('ISBN:9780748617357);Is there something unique about Islamic art? This book argues that there is not - that Islam does not play an leading role in the aesthetic judgements that we should make about objects created in the Islamic world.It is often argued that a very special sort of consciousness went into creating Islamic art, that it is very different from other forms of art, that Muslims are not allowed to portray human beings in their art, and that calligraphy is the supreme Islamic art form. Oliver Leaman challenges all these ideas, showing them to be misguided. Instead he suggests that the sort of criteria we should apply to Islamic art are identical to the criteria applicable to art in general, and that the attempt to put Islamic art into a special category is a result of orientalismKey FeaturesCriticises the influence of Sufism on Islamic aestheticsDeals with issues arising in painting, calligraphy, architecture, gardens, literature, films, and musicPays close attention to the Qur'anArgument includes examples from history, art, philosophy, theology and the artefacts of the Islamic worldThe reader is invited to view Islamic art as no more and no less than ordinary art, neither better nor worse than anything else that counts as art. It follows that there are no special techniques required in Islamic aesthetics as compared with any other form of aesthetics."New Edinburgh Islamic surveys.Islam and artIslamic artsAesthetics, ArabIslam and art.Islamic arts.Aesthetics, Arab.700.917671Leaman Oliver1950-476437MiAaPQMiAaPQMiAaPQBOOK9910810193003321Islamic aesthetics1237068UNINA03054oam 2200541 c 450 991056304910332120240922213722.010.3726/b12520(CKB)4340000000239198(oapen)https://directory.doabooks.org/handle/20.500.12854/31061(PH02)9783954794560(MiAaPQ)EBC31203211(oapen)doab31061(EXLCZ)99434000000023919820240525d1999 uy 0gerurnnunnnannuutxtrdacontentcrdamediacrrdacarrierEntwicklungen in slavischen Sprachen 1Volkmar Lehmann, Anja Anstatt1st, New ed.Frankfurt a.MPH0219991 online resource (332 p.), EPDFSpecimina philologiae Slavicae66sPeter Lang GmbH, Internationaler Verlag der Wissenschaften3-95479-456-X Tanja Anstatt: Die Entwicklung von Verb-Aktanten-Kombinationen vom Alt- zum Neurussischen - Anka Bergmann: Zur Entwicklung von Binomina im Russischen - Björn Hansen: Die Herausbildung und Entwicklung der Modalauxiliare im Polnischen - Volkmar Lehmann: Sprachliche Entwicklung als Expansion und Reduktion - Doris Marszk: Zur Entwicklung von Granularität in Birkenrindentexten - Julia Mende: Derivation und Reintepretation: Die Grammatikalisierung des russischen AspektsDer vorliegende Sammelband ist aus der Arbeit der gleichnamigen Arbeitsgruppe "Entwicklungen in slavischen Sprachen" (E1SS) hervorgegangen. Diese Arbeitsgruppe, der "ElSS-Salon", wurde im Oktober 1995 gegründet. Ausgehend von den allgemeinen Grundannahmen, dass die Struktur sprachlicher Kategorien 1. durch die kognitive Verarbeitung der Wirklichkeit, 2. durch die kommunikative Funktion der Äußerungen und 3. durch ihre Entwicklung zu erklären ist, setzt man sich die gemeinsame Beschäftigung mit der Rekonstruktion von sprachlichen Entwicklungen, mit deren Beschreibungsmöglichkeiten, Regularitäten und Erklärungen zum Ziel. Unter Entwicklung ist dabei sowohl Diachronie als auch Ontogenese zu verstehen, als deren Basis dieselben Prinzipien angenommen werden können. Im Rahmen dieser Fragestellung kommen Grundsätzliches wie auch Einzelfragen, Methodisches und konkrete Anwendung, sowohl eigene Forschung als auch die Ergebnisse aus der einschlägigen Literatur zur Sprache.linguisticsbicsscAnstattArbeitsgruppeEntwicklungenkognitive VerarbeitungLinguistikLiteratur zur SpracheSlavische SprachwissenschaftslavischenSprachenlinguisticsLehmann Volkmaraut1291802Anstatt AnjaedtPH02PH02BOOK9910563049103321Entwicklungen in slavischen Sprachen 13021940UNINA