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Dissertations / Theses on the topic 'Frictional braking'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Eggleston, David. "An investigation into frictional surface interactions and their effect on brake judder." Thesis, Sheffield Hallam University, 2000. http://shura.shu.ac.uk/19601/.

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The chemical nature of the Transfer Film (T.F.) or Third-Body Layer (T.B.L.) formed at the friction interface of an automotive friction brake during off-brake motoring has been studied using Energy Dispersive X-ray (E.D.X.) analysis and Scanning Electron Microscopy (S.E.M.). Although these third-body layers are deposited on both mating surfaces of the friction couple, special attention has been paid to those formed on the disc brake rotor surface. Concurrently, detailed investigations have been undertaken examining the temperature-dependent, physico-chemical interactions of friction material c

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2

Kalakos, Dimitrios, and Bernhard Westerhof. "Heavy Vehicle Braking using Friction Estimation for Controller Optimization." Thesis, KTH, Fordonsdynamik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223318.

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In this thesis project, brake performance of heavy vehicles is improved by the development of new wheel-based functions for a longitudinal slip control braking system using novel Fast Acting Braking Valves (FABVs). To achieve this goal, Volvo Trucks' vehicle dynamics model has been extended to incorporate the FABV system. After validating the updated model with experimental data, a slip-slope based recursive least squares friction estimation algorithm has been implemented. Using information about the tire-road friction coefifcient, the sliding mode slip controller has been made adaptive to dif

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3

Loizou, Andreas, Hong Sheng Qi, and Andrew J. Day. "Analysis of heat partition ratio in vehicle braking processes." Institution of Mechanical Engineers, 2009. http://hdl.handle.net/10454/2834.

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Yes<br>An examination of the heat partition ratio between the friction surfaces of a disc braking system is presented using finite element analysis (FEA). This includes a 2D static analysis of two semi-infinite bodies in contact with and without an interface layer which represents the interface tribo-layer (ITL). An analytical approach with a finite difference solution was used for cross-comparison with the static FE models. Results from the static model have provided the boundary conditions for a 2D dynamic model, where one rectangular block slides on another (fixed) rectangular block.

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4

Hammerström, Lars. "Mechanisms and Phenomena in Braking and Gripping." Doctoral thesis, Uppsala University, Department of Engineering Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6974.

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<p>Applications relying on a high static friction include various types of fixtures, couplings, bolted joints, torsion joints, etc. The common characteristic of these applications is that they rely on the friction force to maintain the relative position of two mating surfaces. Also applications relying on high dynamic friction are common, the main example being brakes, where a low friction could be devastating.</p><p>The plateau model for the friction of brakes has been refined. By using advanced electron microscopy, it has been shown that during braking a partly amorphous friction film, compr

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5

Flitcroft, S. M. "The friction and wear characteristics of a sintered metal motorcycle friction braking material, under wet and dry conditions." Thesis, Brunel University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278371.

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6

Sarip, S. Bin. "Lightweight friction brakes for a road vehicle with regenerative braking : design analysis and experimental investigation of the potential for mass reduction of friction brakes on a passenger car with regenerative braking." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5486.

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One of the benefits of electric vehicles (EVs) and hybrid vehicles (HVs) is their potential to recuperate braking energy. Regenerative braking (RB) will minimize duty levels on the brakes, giving advantages including extended brake rotor and friction material life and, more significantly, reduced brake mass and minimised brake pad wear. In this thesis, a mathematical analysis (MATLAB) has been used to analyse the accessibility of regenerative braking energy during a single-stop braking event. The results have indicated that a friction brake could be downsized while maintaining the same functio

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7

Waddad, Yassine. "Multiscale thermomechanical strategies for rough contact modeling : application to braking systems." Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10049/document.

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Les phénomènes de contact (rugosité, frottement, usure, etc.) sont importants dans le fonctionnement des freins à friction. Ils peuvent influencer leurs performances en modifiant l'état de surface et des matériaux. Afin de cerner ce problème, les industriels se basent sur des méthodes de type essai/erreur qui sont coûteuses et peu efficaces face aux exigences actuelles.L'objectif de cette thèse est de proposer une alternative consistant à modéliser numériquement les systèmes, tels qu'un frein à friction, avec des hypothèses réalistes au niveau du contact contrairement aux approches classiques

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8

Mann, Ruddy. "Experiments and thermomechanical modelling of braking application & friction material characterization with loading history effect." Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10016.

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L’expansion actuelle du secteur de la haute vitesse ferroviaire vers des vitesses d’exploitation et chargements plus importants conduit à la nécessité d’améliorer les systèmes de freinage garantissant leurs performances malgré l’énergie supplémentaire à dissiper.La méthodologie actuelle de développement de ces matériaux étant principalement basée sur un retour d’expérience essai/erreur, l’objectif vise donc à développer une méthodologie alternative incorporant des modèles théoriques et numériques pour la conception de matériaux de friction. Cependant, les difficultés s’avèrent multiples avec d

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9

Zaini. "Control strategies for blended braking in road vehicles : a study of control strategies for blended friction and regenerative braking in road vehicles based on maximising energy recovery while always meeting the driver demand." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/7341.

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In HEV and EV, higher fuel economy is achieved by operating the ICE and electric motor in the most efficient region and by using regenerative braking. Such a braking system converts, transfers, stores and reuses kinetic energy which would otherwise be dissipated as heat through friction brakes to the environment. This research investigates the control of braking for a mixed-mode braking system in a these vehicles based on the proportion of braking energy that can be stored. Achieving mixed-mode braking requires the ‘blending’ of the two systems (regenerative and friction), and in brake blendin

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10

Neis, Patric Daniel. "Projeto e construção de um tribômetro com controle independente da temperatura do disco." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/75736.

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A presente tese descreve as etapas de desenvolvimento de um equipamento (tribômetro) e metodologia de ensaio para caracterização do efeito isolado da temperatura sobre o atrito medido em materiais de fricção utilizados em freios veiculares. O projeto deste equipamento foi baseado nas funcionalidades e limitações encontradas nas principais máquinas e procedimentos de ensaio para freios automotivos. São apresentados e discutidos detalhes do projeto mecânico e de automação do tribômetro, bem como são levantadas suas incertezas de medição instrumentais e precisão. Além disso, é proposta uma nova m

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11

Galas, Radovan. "Friction Modification within Wheel-Rail Contact." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-367508.

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Předložená disertační práce se zabývá experimentálním studiem modifikátorů tření a maziv pro temeno kolejnice, které jsou aplikovány do kontaktu kola a kolejnice za účelem optimalizace adheze a redukce hluku. Hlavním cílem práce bylo objasnit vliv aplikovaného množství a složení těchto látek na adhezi v kontaktu. Hlavní pozornost byla věnována zejména potencionálním hrozbám souvisejících s kriticky nízkou adhezí, která může nastat po aplikaci těchto látek. Experimentální studium probíhalo v laboratorních i reálných podmínkách, konkrétně v tramvajovém provozu. V případě laboratorních experiment

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12

Drabison, John Stephen II. "Experimental Investigation of Judder in a Floating Disc-Caliper Braking System with Focus on Pad Geometry." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1276795212.

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13

Loizou, Andreas. "Modelling and simulation of themo-mechanical phenomena at the friction interface of a disc brake.An empirically-based finite element model for the fundamental investigation of factors that influence the interface thermal resistance at the friction interface of a high energy sliding pair in a disc brake." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5489.

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The fundamental theories of heat generation and transfer at the friction interface of a brake assume either matching or not matching surface temperatures by having a varying or uniform heat partition ratio respectively. In the research presented the behaviour of heat partition has been investigated in a fundamental study based on experimental measurements of temperature and the associated modelling and simulation of heat transfer in a brake friction pair. For a disc brake, an important parameter that was identified from the literature study is the interface tribo-layer (ITL), which has

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14

Portugal, André Fernandes Vaz. "Validation of a FEM-based tool and implementation of tyres' dry and wet braking prediction." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/22755.

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Mestrado em Engenharia Mecânica<br>In the present document, a new explicit FEM-based software developed to optimize tyre pattern geometry is presented. The new software calculates forces and displacements in tyre tread components after applying a load and a longitudinal shear displacement. To overcome long meshing and calculation times, simplifications are made. In this work, the usability of the simplifications is checked and the new software is adjusted and validated through the use of other FEM-based software in the market (Abaqus). To perform the validation, models are created, reproducin

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15

Loizou, Andreas. "Modelling and simulation of themo-mechanical phenomena at the friction interface of a disc brake : an empirically-based finite element model for the fundamental investigation of factors that influence the interface thermal resistance at the friction interface of a high energy sliding pair in a disc brake." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5489.

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The fundamental theories of heat generation and transfer at the friction interface of a brake assume either matching or not matching surface temperatures by having a varying or uniform heat partition ratio respectively. In the research presented the behaviour of heat partition has been investigated in a fundamental study based on experimental measurements of temperature and the associated modelling and simulation of heat transfer in a brake friction pair. For a disc brake, an important parameter that was identified from the literature study is the interface tribo-layer (ITL), which has been mo

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16

Berté, Emmanuel. "Mesure de champs thermiques de surface par thermographie bichromatique en situation de frottement haute énergie." Thesis, Ecole centrale de Lille, 2015. http://www.theses.fr/2015ECLI0033/document.

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Dans les contacts fortement dissipatifs, la dissipation d'énergie par frottement conduit à des sollicitations thermiques très sévères qui peuvent avoir des répercussions conséquentes sur les performances, la durabilité des organes de friction, l'environnement ou la santé humaine. La connaissance des champs thermiques des surfaces de frottement est un enjeu de premier ordre. Dans le cas de mesures sans contact du rayonnement calorifique, elle s'avère difficile du fait de l'émissivité inconnue de ces surfaces, qui varie spatialement et temporellement lors du frottement. Les travaux ont concerné

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17

Коптовець, Олександр Миколайович, Александр Николаевич Коптовец та О. М. Koptovets. "Розвиток наукових основ розробки гальмівних систем рухомого складу шахтного рейкового транспорту високого технічного рівня". Thesis, Видавництво НГУ, 2013. http://ir.nmu.org.ua/handle/123456789/778.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.05.06 – гірничі машини. – Державний вищий навчальний заклад «Національний гірничий університет» Міністерства освіти і науки, молоді та спорту України, Дніпропетровськ, 2013.<br>Диссертация на соискание учетной степени доктора технических наук по специальности 05.05.06 – горные машины. – Государственное высшее учебное заведение «Национальный горный университет» Министерства образования и науки, молодежи и спорта Украины, Днепропетровск, 2013.<br>У дисертаційній роботі розв'язана актуальна наукова п

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18

Parajuli, Prabin. "EXPERIMENTAL INVESTIGATION OF CORROSION OF COATED CAST IRON ROTORS IN THE AUTOMOTIVE INDUSTRY." OpenSIUC, 2020. https://opensiuc.lib.siu.edu/theses/2711.

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Electric and hybrid vehicles uses regenerative braking, where application of the brake triggers the electric motor to work as a generator to produce electricity, which in turn charges the battery. This results in much less use of the friction brake, changing the corrosion and wear behavior of the rotor surface. There is a need for research on this topic, since fully electric or hybrid vehicles are replacing combustion engines due to concerns about global warming and climate change. Here the corrosion behavior of coated cast iron vehicle rotors in 3.5wt% NaCl is studied. The corrosion study has

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19

Ekermann, Sara. "Konceptstudie för att korta bromssträckan hos personbilar i nödsituationer." Thesis, Linköpings universitet, Maskinkonstruktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-80041.

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Utifrån en problemställning formulerad av Trafikverkets skyltfond har produktutvecklingsföretaget Prodelox drivit ett projekt med syfte att testa kreativa idéer för att minska bromssträckan för personbilar i nödsituationer. Som en del i projektet har ett examensarbete genomförts vilket resulterat i denna rapport. Examensarbetet ämnar sammanställa en mängd idéer på alternativa metoder att bromsa bilar, för att sedan välja ut tre av dessa för praktiska tester. Idén med att korta bromssträckan grundar sig i trafiksäkerhetsarbetet i kombination med introduktionen av nya tekniska system som kan för

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20

Ho, Hon Ping. "The Influence of Braking System Component Design Parameters on Pedal Force and Displacement Characteristics. Simulation of a passenger car brake system, focusing on the prediction of brake pedal force and displacement based on the system components and their design characteristics." Thesis, University of Bradford, 2009. http://hdl.handle.net/10454/7447.

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This thesis presents an investigation of braking system characteristics, brake system performance and brake system component design parameters that influence brake pedal force / displacement characteristics as ‘felt’ by the driver in a passenger car. It includes detailed studies of individual brake system component design parameters, operation, and the linear and nonlinear characteristics of internal components through experimental study and simulation modelling. The prediction of brake pedal ‘feel’ in brake system simulation has been achieved using the simulation modelling package AMESim. Eac

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21

Collignon, Mathilde. "Compréhension des mécanismes de dégradation de disques de frein pour véhicule « poids lourd » et définition de nouvelles solutions matériaux." Thesis, Ecole centrale de Lille, 2013. http://www.theses.fr/2013ECLI0001/document.

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L’objectif de cette thèse est de proposer de nouvelles solutions matériaux moins sensibles à la fissuration par fatigue thermique induite en frottement, première cause de remplacement des disques de frein de véhicule « poids lourd ». Les performances en freinage doivent être équivalentes à celles obtenues avec le couple de matériaux actuels : disque de frein en fonte à graphite lamellaire- garniture en matériau de friction composite à matrice semi-métallique. L’étude repose sur une approche multidisciplinaire des phénomènes et des couplages induits en freinage. Elle comporte quatre parties : l

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Zermegh, Tomáš. "Zvyšování tepelných, elektrických a mechanických vlastnosti bezpečnostních brzd." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254463.

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This thesis is dealing with a detailed analysis of electromechanical brake used in emergency situations to stop the electric motor. Environmental influences, bad material proposal or bad design parameters can significantly limit the behaviour of a brake. The thesis presents several approaches to avoid these limitations, to limit the reaction time and achieve better results. The attached programs can be used either for innovation, or for the new brake design based on the entry requirements.

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Gerthoffert, Jonathan. "Prévision des performances de freinage des avions sur les pistes contaminées à partir des mesures de frottement." Thesis, Ecole centrale de Nantes, 2017. http://www.theses.fr/2017ECDN0018.

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Les performances de freinage des avions sont fortement dépendantes de l’état de surface des pistes et la présence d’eau sur la piste peut sévèrement dégrader ces performances. Les exploitants d’aéroports ont alors l’obligation d’informer les pilotes sur l’état de surface de la piste afin que ces derniers puissent estimer leur distance d’atterrissage. Les appareils de mesure du frottement sont un outil largement utilisé pour caractériser l’état de surface de la piste. Cependant, les résultats de mesure de ces appareils sont dépendants de la vitesse, de la masse, des dimensions des pneumatiques

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Hentati, Nesrine. "Matériaux composites à matrice organique pour garnitures de frein : analyse des liens entre le procédé d’élaboration, la microstructure, les propriétés et le comportement tribologique : analyse des liens entre le procédé d’élaboration, la microstructure, les propriétés et le comportement tribologique." Thesis, Ecole centrale de Lille, 2014. http://www.theses.fr/2014ECLI0012/document.

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Les matériaux composites organiques pour garniture de frein à friction sont le fruit d’une élaboration complexe, composée d’une succession d’étapes (mélange de constituants, préformage à froid, moulage à chaud, post-cuisson) ce qui rend difficile la maitrise du lien entre procédé, propriétés et comportement de ces matériaux en particulier du fait des synergies entre les constituants formant le mélange d’une part, et entre la composition et le procédé de fabrication d’autre part. Les travaux de thèse se sont focalisés sur deux étapes de fabrication, le moulage à chaud et la post cuisson, avec l

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Mbodj, Coumba. "Rôle des paramètres matériaux et structuraux dans l’homogénéisation numérique des composites C/C. Cas des sollicitations tribologiques de freinage." Thesis, Lyon, INSA, 2011. http://www.theses.fr/2011ISAL0028/document.

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Afin de comprendre les mécanismes d’usure et de frottement des composites carbone/carbone (C/C) utilisés en freinage aéronautique, un modèle numérique est utilisé pour dissocier les effets mécaniques des effets physico-chimiques et thermiques. Le modèle repose sur l’utilisation d’une approche par éléments finis et de techniques d’homogénéisation appliquées à un volume élémentaire représentatif (VER) du matériau à l’échelle mésoscopique frottant sur une surface rigide ou déformable. A cette échelle, le matériau est décrit par une matrice en carbone et des paquets de fibres de carbone appelés to

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Champagne, Matthieu. "« Endommagement utile » et « dialogue surface/volume » : Investigations numérique et expérimentale du comportement des composites C/C sous sollicitations tribologiques." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2013ISAL0135.

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Le matériau composite carbone/carbone ou C/C est utilisé en temps que matériau de friction en freinage aéronautique. Matériau complexe tant du point de vue de sa description microstructurale que de son comportement sous sollicitations tribologiques, il a été l’objet de nombreuses études visant à mieux comprendre les mécanismes régissant sa réponse (frottement, endommagement, usure) à ces sollicitations. Dans cette étude nous nous focalisons sur l’aspect mécanique de cette réponse. En particulier, nous nous intéressons aux endommagements présents dans le matériau : nous souhaitons étudier tant

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Singla, Narinder. "Etude expérimentale de la relation entre l'occurrence de bruit et l'aire de portance dans un contact sec glissant." Thesis, Ecole centrale de Lille, 2019. http://www.theses.fr/2019ECLI0020.

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Les freins à friction peuvent induire des vibrations et du bruit, notamment le crissement, qui constitue un enjeu de santé publique majeur. Le crissement résulte d’une instabilité dynamique, responsable de vibrations de grande amplitude et d’émissions sonores intenses. Si le phénomène est bien connu en soi, l'origine des occurrences de crissement demeure mal comprise. Il est reconnu que le crissement est lié à de nombreux facteurs, parmi eux notamment l'usure des organes de friction. La nature multi-échelle des couplages physiques, la complexité des matériaux de friction et la nature fermée du

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Ghezzi, Ilaria. "Tribological and vibro-acoustic behaviour of a lubricated contact subjected to the stick-slip phenomenon : The case of the spring-brake system." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI116.

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Les travaux de thèse proposent une approche complémentaire, combinant analyses dynamiques et tribologiques, au problème de stick-slip d’un contact graissé, dans un frein mécanique à ressort. L’instabilité de stick-slip est le résultat du couplage entre la réponse dynamique du système mécanique (frein) et la réponse locale du contact lubrifié à l’interface de freinage. La réponse locale du contact graissé a d’abord été caractérisée par des tests expérimentaux effectués sur tribomètre. Ensuite, les conditions qui conduisent à l'instabilité ont pu être investiguées en détail, à l’aide d’un modèle

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Бакал, Є. О. "Проєкт вантажного автомобіля з дослідженням сил тертя та зносу поршня в з’єднанні поршень-поршневий палець". Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/23207.

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Бакал, Є. О. Проєкт вантажного автомобіля з дослідженням сил тертя та зносу поршня в з’єднанні поршень-поршневий палець : випускна кваліфікаційна робота : 274 «Автомобільний транспорт» / Є. О. Бакал ; керівник роботи В. В. Кальченко ; НУ "Чернігівська політехніка", кафедра автомобільного транспорту та галузевого машинобудування. – Чернігів, 2021. – 160 с.<br>При виконанні випускної кваліфікаційної роботи магістра, визначив масові показники й параметри автомобіля, провів розрахунок двигуна автомобіля, розрахували показники динамічності автомобіля, його гальмівні властивості та паливну економічн

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Метьолкін, О. С. "Проєкт легкового автомобіля з дослідженням сил тертя та зносу поршня в з’єднанні поршень-поршневий палець". Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/23209.

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Метьолкін, О. С. Проєкт легкового автомобіля з дослідженням сил тертя та зносу поршня в з’єднанні поршень-поршневий палець : випускна кваліфікаційна робота : 274 «Автомобільний транспорт» / О. С. Метьолкін ; керівник роботи В. В. Кальченко ; НУ "Чернігівська політехніка", кафедра автомобільного транспорту та галузевого машинобудування. – Чернігів, 2021. – 162 с.<br>При виконанні кваліфікаційної роботи, визначено масові показники й параметри автомобіля, проведено розрахунок двигуна автомобіля, розраховано показники динамічності автомобіля, його гальмівні властивості та паливну економічність. У

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Qi, Hong Sheng, K. Noor, and Andrew J. Day. "Interface temperatures in friction braking." 2002. http://hdl.handle.net/10454/885.

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Yes<br>Results and analysis from investigations into the behaviour of the interfacial layer (Tribolayer) at the friction interface of a brake friction pair (resin bonded composite friction material and cast iron rotor) are presented in which the disc/pad interface temperature has been measured using thermocouple methods. Using a designed experiment approach, the interface temperature is shown to be affected by factors including the number of braking applications, the friction coefficient, sliding speed, braking load and friction material. The time-dependent nature of the Tribo-Iayer form

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Qi, Hong Sheng, and Andrew J. Day. "Investigation of disc/pad interface temperatures in friction braking." 2007. http://hdl.handle.net/10454/2277.

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Qi, Hong Sheng, and Andrew J. Day. "Investigation of Disc/Pad Interface Temperatures in Friction Braking." 2006. http://hdl.handle.net/10454/7974.

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yes<br>Maintaining appropriate levels of disc-pad interface temperature is critical for the overall operating effectiveness of disc brakes and implicitly the safety of the vehicle. Measurement and prediction of the distribution and magnitude of brake friction interface temperatures are difficult. A thermocouple method with an exposed hot junction configuration is used for interface temperature measurement in this study. Factors influencing the magnitude and distribution of interface temperature are discussed. It is found that there is a strong correlation between the contact area ratio and the

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Joshi, Kamal. "Braking Availability Tester (BAT) for Winter Runway." Thesis, 2013. http://hdl.handle.net/10012/7762.

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This thesis is concerned with the development of a new measurement device for the realistic assessment of braking capability of landing airplanes for winter runways. Landing represents one of the most safety-critical phases of aircraft operation. Aircraft runway excursion incidents occur due to the unpredictability of the runway pavement condition. This is especially true during winter time when the runway is often covered by deformable contaminants. Several accidents are discussed that list the deteriorated condition of the runway pavement and the inability to accurately report this conditi

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Tai-YuanWang and 王泰元. "The Effect of Varying Friction coefficient of Pavement on Braking Distance." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/30683330952018233166.

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碩士<br>國立成功大學<br>土木工程學系碩博士班<br>101<br>The car accidents were due to the tire locked on braking or the insufficient friction of the pavement. It is necessary to realize the effect of the friction coefficient of pavement by design different friction coefficient on pavement and using different type of braking system. Also the different speeds will be tested. This study will set a model in ABAQUS and simulate the braking distance in different situations. By the result, the ABS can reduce about 10~15% braking distance. On the other hand, using the friction coefficient of 1.0 and 1.5 paved one by one

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Ren-WeiLee and 李仁維. "Application of Tire/Road Friction Estimation to Autonomous Emergency Braking System." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/56042663562630593400.

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碩士<br>國立成功大學<br>電機工程學系<br>103<br>The objective of the research is to improve the performance and application scope of the Autonomous Emergency Braking System (AEBS). To accomplish this purpose, we apply the tire/road friction estimation technique to adjust the ermergency braking control strategy. With this method, the system can meet the AEB requirement with higher score. The results imply that the AEBS with tire/road friction estimation on slippery road can improve the performance.

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Gao, Xiang. "Modeling and control of antilock braking systems utilizing dynamic friction tire model." Thesis, 2001. http://spectrum.library.concordia.ca/1549/1/MQ68453.pdf.

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The development of high-performance antilock braking systems that provide reliability, steerability, and stability during braking in different road conditions, i.e., wet, icy or dry road surface, has attracted much attention in the automobile industry. This thesis addresses the controller designs for antilock braking systems (ABS) in vehicles. Simplified quarter vehicle models with special emphasis on the modeling of tire and dynamic tire-road interaction is utilized to develop and test the proposed controllers. The novelty of the present research is in the utilization and formulation of a ne

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Chang, Po-Ju, and 張博儒. "An Intelligent Wheelchair Anti-lock Braking System Design with Friction Coefficient Estimation." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/9wt7tf.

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碩士<br>國立交通大學<br>電控工程研究所<br>106<br>In the future, the population’s aging problem will become increasingly serious. For medical care, action-assisted vehicles are one of the solutions. Wheelchair is a common mobility assistance equipment and the safety of the user is an important issue. For the ordinary wheelchairs, most of them use a fixed handbrake or disc brake to allow the users to stop the wheelchair. However, improper use of brakes tends to cause slippage, and there is no concept of the anti-lock braking system for the wheelchair. Therefore, this paper applies this idea to intelligent whee

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KAN, MING-KAI, and 甘銘凱. "Fuzzy Control of Anti-lock Braking System for Motorcycle Using Adaptive Parameter Estimator and Road Friction Identification." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/g873ax.

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Sarip, S. Bin, Andrew J. Day, Peter Olley, and Hong Sheng Qi. "Analysis of the transient thermomechanical behaviour of a lightweight brake disc for a regenerative braking system." 2013. http://hdl.handle.net/10454/9721.

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no<br>Regenerative braking would extend the working range of an EV or HV provided that any extra energy consumption from increased vehicle mass and system losses did not outweigh the saving from energy recuperation, also reduce duty levels on the brakes themselves, giving advantages including extended brake rotor and friction material life, but more importantly reduced brake mass, minimise brake pad wear. The objective of this research is to define thermal performance on lightweight disc brake models. Thermal performance was a key factor which was studied using the 3D model in FEA simulations.

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Qiu, L., Hong Sheng Qi, and Alastair S. Wood. "Two-dimensional finite element analysis investigation of the heat partition ratio of a friction brake." 2017. http://hdl.handle.net/10454/14280.

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Yes<br>A 2D coupled temperature-displacement FE model is developed for a pad-disc brake system based on a restricted rotational pad boundary condition. The evolution of pressure, heat flux, and temperature along the contact interface during braking applications is analysed with the FE model. Results indicate that different rotational pad boundary conditions significantly impact the interface pressure distribution, which in turn affects interface temperature and heat flux distributions, and suggest that a particular pad rotation condition is most appropriate for accurately modelling frict

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Coimbra, Miguel António Xavier. "Implementação de metodologias experimentais para estudar o comportamento de travões de bicicleta." Master's thesis, 2013. http://hdl.handle.net/10316/99530.

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Dissertação de Mestrado em Engenharia Mecânica, especialidade de Projeto Mecânico e Sistemas de Produção, apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.<br>This thesis is focused on the performance and durability of the caliper braking system that equips road cycling competition bikes, specifically on the contact stage. Test results regarding this materials are not published, therefore theory was based on friction fundamental books and experimentation was adapted from aluminum rims testing. A pin-on-disc automated test was setup measuring friction force and wear

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Качановецький, Віталій Ігорович, та Vitalii Ihorovych Kachanovetskyi. "Проект дільниці ремонтного цеху для технічного обслуговування і діагностування гальмівних систем автобусів СКІФ-5204 з дослідженням процесу прогнозування залишкового ресурсу силових агрегатів". Master's thesis, 2020. http://elartu.tntu.edu.ua/handle/lib/33504.

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Роботу виконано на кафедрі автомобілів Тернопільського національного технічного університету імені Івана Пулюя Міністерства освіти і науки України. Захист відбудеться 22 грудня 2020 р. о 09:30 годині на засіданні екзаменаційної комісії № 10 у Тернопільському національному технічному університеті імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Текстильна, 28, навчальний корпус № 9, ауд. 106.<br>В кваліфікаційній роботі розроблено технологію технічного обслуговування і діагностування гальмівних систем автобусів СКІФ-5204, а також досліджено процес прогнозування залишкового ресурсу силови

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Pinto, Samantha Theresa. "Optimizing Airport Runway Performance by Managing Pavement Infrastructure." Thesis, 2012. http://hdl.handle.net/10012/6903.

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The research described herein is composed of four major areas of practice. It examines the overall performance of runways and provides tools designed to improve current runway operations and management with particular emphasis on contaminated surfaces. Presented in this thesis is an overview of how to design airport pavements in order to achieve optimal friction by specifically focusing on material selection and construction techniques for rigid and flexible pavements. Rubber buildup and the impact rubber accumulation has on decreasing runway friction, particularly in a range of climatic co

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