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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Growth Strategy for Taiwanese Suppliers in China OE Automotive Market - L Company Perspective.

Hsieh, Cheng-wen 11 September 2008 (has links)
China has become the most significant market in the world, since both the high demanding quantity and high potential in growth. China was ranked world wide number three for car sales and number two for car production volume in year 2007. In the meanwhile, according to the forecasting, China auto market will keeping in a growth rate higher than two digits in the coming five years. In contrast to the other major auto markets, USA, Europe and Japan, those markets are all keeping in low even minus sales growth cause from impacted by both the high gasoline price and economy depression. The purpose of this thesis is trying to fig out the competitive strategy and growth model for the Taiwan based automotive suppliers who already became China auto¡¦s supplier. Those suppliers have a very tough situation in China, due to them not only must face the giant global tier one but also the aggressively local based suppliers in China Auto market. The thesis will take the aspect of Taiwan based automotive suppliers, and probe into how those suppliers seeking the niche market and growth opportunity in such a severe market place. The specific objectives are: 1. Overview the Chinese automotive market and also predict the trend of such market. 2. Find the growth and also the competitive strategy for those suppliers. Through study the related thesis and publications, interview the insiders, analysis the row data/ industry survey reports and also combine with author¡¦s field experience in automotive, this thesis will come out below results: 1. General model for growth strategy. 2. The specific growth model for Taiwan based auto suppliers in China. 3. The competitive strategy for Taiwan based auto suppliers in China. 4. Suggestions for Chinese automotive suppliers.
2

Estudo de compensadores para a válvula borboleta eletrônica automotiva. / Study of compensator for automotive electronic throttle valve.

Guedes, Marcos Antonio de Carvalho 13 December 2013 (has links)
A válvula borboleta é o atuador principal do sistema de admissão de ar no motor a combustão interna ciclo Otto (MCI), determinando a massa de ar admitida para o sistema de gerenciamento eletrônico do motor (ECU) realizar os cálculos de controle da injeção eletrônica de combustível, e o momento de lançamento da centelha para o sistema de ignição eletrônica, atuando também no regime de funcionamento do MCI. Este trabalho explora o controle da válvula borboleta eletrônica automotiva, onde foram estudados diversos modelos de controle para a válvula borboleta. O controle visa responder a ECU que demanda um determinado ângulo de abertura da válvula borboleta, para o melhor funcionamento e gestão do MCI para cada região de operação do motor, sendo este ângulo de abertura determinado pela própria ECU. O principal objetivo do trabalho é buscar um melhor desempenho do controle da válvula borboleta, para responder com exatidão ao comando da ECU e, consequentemente, um desempenho ótimo do motor de combustão interna. Adicionalmente, o trabalho promove avanços parciais para o desenvolvimento de uma unidade eletrônica de gerenciamento do motor. / The throttle is the main actuator of the air intake system in an internal combustion engine Otto cycle (MCI), determining the mass of air admitted to the system of electronic engine management (ECU) in the calculations of the electronic injection control fuel, and the timing of the spark to launch the electronic ignition system, also working in the regime of operation of the MCI. This work explores the control of automotive electronic throttle valve, where many control for throttle valve was studied. The control ECU aims to answer that demand a certain opening angle of the throttle valve, to improve the functioning and management of MCI for each region of operation of the engine, and this opening angle determined by the ECU itself. The main objective is to seek a better control performance throttle valve to respond accurately to the command of the ECU and hence optimum performance of the internal combustion engine. In addition, the work promotes partial advances in the development of an electronic engine management unit.
3

Estudo de compensadores para a válvula borboleta eletrônica automotiva. / Study of compensator for automotive electronic throttle valve.

Marcos Antonio de Carvalho Guedes 13 December 2013 (has links)
A válvula borboleta é o atuador principal do sistema de admissão de ar no motor a combustão interna ciclo Otto (MCI), determinando a massa de ar admitida para o sistema de gerenciamento eletrônico do motor (ECU) realizar os cálculos de controle da injeção eletrônica de combustível, e o momento de lançamento da centelha para o sistema de ignição eletrônica, atuando também no regime de funcionamento do MCI. Este trabalho explora o controle da válvula borboleta eletrônica automotiva, onde foram estudados diversos modelos de controle para a válvula borboleta. O controle visa responder a ECU que demanda um determinado ângulo de abertura da válvula borboleta, para o melhor funcionamento e gestão do MCI para cada região de operação do motor, sendo este ângulo de abertura determinado pela própria ECU. O principal objetivo do trabalho é buscar um melhor desempenho do controle da válvula borboleta, para responder com exatidão ao comando da ECU e, consequentemente, um desempenho ótimo do motor de combustão interna. Adicionalmente, o trabalho promove avanços parciais para o desenvolvimento de uma unidade eletrônica de gerenciamento do motor. / The throttle is the main actuator of the air intake system in an internal combustion engine Otto cycle (MCI), determining the mass of air admitted to the system of electronic engine management (ECU) in the calculations of the electronic injection control fuel, and the timing of the spark to launch the electronic ignition system, also working in the regime of operation of the MCI. This work explores the control of automotive electronic throttle valve, where many control for throttle valve was studied. The control ECU aims to answer that demand a certain opening angle of the throttle valve, to improve the functioning and management of MCI for each region of operation of the engine, and this opening angle determined by the ECU itself. The main objective is to seek a better control performance throttle valve to respond accurately to the command of the ECU and hence optimum performance of the internal combustion engine. In addition, the work promotes partial advances in the development of an electronic engine management unit.
4

A Study on The Design of Automotive Electronics Product Based on Quality Function Deployment Method-A Case Study on Tire Pressure Monitoring Systems (TPMS)

Tu, Yao-hung 22 June 2007 (has links)
As the introduction of semiconductor¡Bcomputer¡Bnetwork communcation¡Bmulti-media technology¡K¡Ketc. and the development and application of relevant automotive electronics, the car has becoming a high technological product instead of a traditional and machnical conveyance. Based on IC Insights, over 40% of vehicles will be equipped with automotive electronics and the automotive electronics market will reach the scale of US$192 billion in 2010. The scale of market is expected to reach the record of US$400 billion that represented over 50% of vehicles will be equiped with automotive electronics in 2015. The automotive electronics was divided to six functional field including ¡§Powertrain¡¨¡B¡¨Body¡¨¡B¡¨Chassis¡BSecurity¡¨¡B¡¨Safety¡¨ and ¡§Driver information¡¨. According to the research of IEK, ¡§Tire Pressure Monitoring System¡¨ is the most potential product in ¡§Safety¡¨ field for Taiwan manufacturers of IT industry to invest their resource. Based on Strategy Analytics, the global market of Tire Pressure Monitoring System reaches the scale of US$200 million in 2004 and the growth is expected to reach the record of US$1,279 million in 2008 and 63.6% annual compound growth. Quality Function Deployment (QFD) is a systematical tool with customer orientated concept. Adopting QFD method to product design efficiently is able to shorten development time¡Breduce cost and improve quality to satisfy customer¡¦s needs in his or her mind. This research is completed by case study of Tire Pressure Monitoring System (TPMS) which is developed by certain Taiwan company with potentials that is chosen by specialists. In this research we try to collect related information about certain company and explore customer¡¦s real-life needs by conducting questionnaire surveys. Kano¡¦s two-dimensional quality model is applied to identify customer¡¦s critical quality requirements. Quality factor¡Bsub-system/component and process are deployed by the matrix method of QFD to recognize key items for improving product design.
5

Modelamento matemático e controle PI de uma válvula borboleta eletrônica. / Mathematical modeling and PI control of an electronic throttle valve.

Silva, Cynthia Thamíres da 23 March 2015 (has links)
Este trabalho apresenta uma investigação das propriedades dinâmicas da válvula borboleta eletrônica do sistema de admissão de ar de um motor a combustão interna. O objetivo é utilizar um modelo matemático da válvula borboleta com todos os seus parâmetros identificados para efetuar o controle da válvula e aplica-lo em ambiente real. Tendo o modelo e os parâmetros identificados, compara-se o comportamento real de uma válvula borboleta com o comportamento simulado, utilizando os mesmos sinais de entrada, de tal forma a validar o modelo desenvolvido. Utilizando o controle Proporcional Integral, foi possível mostrar a aplicabilidade da metodologia que pode ser estendida para projetos de controle mais complexos. Com o controle PI, o modelo matemático é validado e pode ser utilizado como base para projetos de controle mais complexos. O modelo aqui desenvolvido representa satisfatoriamente a dinâmica da válvula borboleta, sendo possível utilizá-lo em outros tipos de válvula borboleta. / This work presents an investigation on the dynamic properties of the electronic air intake throttle valve of an internal combustion engine. The objective is to use a mathematical model of throttle valve with all it\'s parameters identified to effect control of the valve and apply it in a real environment. Having identified model parameters, the real performance is compared to a throttle valve with the simulated behavior using the same input signals, in order to validate the developed model. Using the Proportional Integral control, it was possible to show the applicability of the methodology that can be extended to more complex control design. The model here developed satisfactorily represents the dynamics of the throttle valve, being able to use in other types of throttle valves.
6

Modelamento matemático e controle PI de uma válvula borboleta eletrônica. / Mathematical modeling and PI control of an electronic throttle valve.

Cynthia Thamíres da Silva 23 March 2015 (has links)
Este trabalho apresenta uma investigação das propriedades dinâmicas da válvula borboleta eletrônica do sistema de admissão de ar de um motor a combustão interna. O objetivo é utilizar um modelo matemático da válvula borboleta com todos os seus parâmetros identificados para efetuar o controle da válvula e aplica-lo em ambiente real. Tendo o modelo e os parâmetros identificados, compara-se o comportamento real de uma válvula borboleta com o comportamento simulado, utilizando os mesmos sinais de entrada, de tal forma a validar o modelo desenvolvido. Utilizando o controle Proporcional Integral, foi possível mostrar a aplicabilidade da metodologia que pode ser estendida para projetos de controle mais complexos. Com o controle PI, o modelo matemático é validado e pode ser utilizado como base para projetos de controle mais complexos. O modelo aqui desenvolvido representa satisfatoriamente a dinâmica da válvula borboleta, sendo possível utilizá-lo em outros tipos de válvula borboleta. / This work presents an investigation on the dynamic properties of the electronic air intake throttle valve of an internal combustion engine. The objective is to use a mathematical model of throttle valve with all it\'s parameters identified to effect control of the valve and apply it in a real environment. Having identified model parameters, the real performance is compared to a throttle valve with the simulated behavior using the same input signals, in order to validate the developed model. Using the Proportional Integral control, it was possible to show the applicability of the methodology that can be extended to more complex control design. The model here developed satisfactorily represents the dynamics of the throttle valve, being able to use in other types of throttle valves.
7

Sistemas de comunicação CAN FD: modelamento por software e análise temporal. / CAN FD communication systems: modeling software and temporal analysis.

Andrade, Ricardo de 26 September 2014 (has links)
O CAN (Controller Area Network) é um padrão no barramento de comunicação, amplamente difundido em aplicações industriais, particularmente em sistemas automotivos. Atualmente, um dos principais problemas no ramo automotivo é que esse barramento está com muitas mensagens no barramento, resultado da incorporação incremental de sistemas eletrônicos em automóveis, visto que há uma exigência maior de conectividade devido às exigências da sociedade e mercado. Como alternativa, vem sendo desenvolvida uma nova rede de comunicação, conhecida como CAN with Flexible Data-Rate (CAN-FD), que é um barramento com velocidade de transmissão de informação mais alta e maior capacidade de transporte de dados. Este projeto tem por objetivo principal explorar as funcionalidades da rede CAN-FD, através de simulações do trânsito de mensagens numa rede CAN-FD usando os dados de uma rede real CAN, e verificando a previsibilidade de ambas no âmbito de um protocolo que possa atender à demanda de sistemas complexos. A comparação é executada a partir de um conjunto de mensagens adicionadas na rede, para verificar os limites de transmissão de cada uma das redes, e os respectivos tempos de atraso das mensagens. Como um segundo estudo de caso, uma rede de controle em malha fechada foi desenvolvida, conectada a um barramento CAN e um barramento CAN-FD. Essa técnica de controle permitiu eliminar os ruídos que interferem no controle, e checar o limite em que o protocolo de comunicação consegue manter em uma malha de controle funcionando. Os resultados mostraram que é possível transmitir uma imensa quantidade de dados com o menor uso do busload (quantidade de mensagens transmitidas) no veículo através do uso do barramento CAN-FD, porém ainda não foi lançado no mercado um controlador do CAN-FD para realizar essa tarefa. Por outro lado, os dois protocolos, CAN-FD e CAN, tem suas previsibilidades comprometidas pois não conseguem enviar a mensagem quando o barramento está superior a 98,86% de carga. / The CAN (Controller Area Network) is a standard in the communication bus, widespread in industrial applications, particularly in automotive systems. Currently, one of the main problems in the automotive industry is that this bus is with many messages on the bus, the result of incremental incorporation of electronic systems in automobiles, since there is a greater demand for connectivity due to the demands of society and the market. Alternatively, it has been developed a new communications network, known as CAN with Flexible Data-Rate (CAN-FD), which is a bus with transmission speeds higher and higher capacity data transport information. This project\'s main objective is to explore the features of the network CAN-FD, through simulations of the traffic of messages on a CAN network FD using data from a real CAN network, and verifying the predictability both in the context of a protocol that can meet the demand complex systems. The comparison is performed from a set of messages added to the network to verify the boundaries of each of the transmission networks and the respective delay times of the messages. As a second case study, a network of closed-loop control was developed, connected to a CAN bus and CAN bus FD. This control technique has eliminated the noises that interfere with the control and check the extent that the communication protocol can keep a control loop running. The results showed that it is possible to transmit a huge amount of data with the lowest usage busload (amount of transmitted messages) to the vehicle through the use of CAN bus FD, but not yet released to market a CAN controller FD to accomplish this task . Moreover, both protocols, CAN-FD and CAN has its predictability compromised because they are unable to send the message when the bus is more than 98.86% load.
8

Sistemas de comunicação CAN FD: modelamento por software e análise temporal. / CAN FD communication systems: modeling software and temporal analysis.

Ricardo de Andrade 26 September 2014 (has links)
O CAN (Controller Area Network) é um padrão no barramento de comunicação, amplamente difundido em aplicações industriais, particularmente em sistemas automotivos. Atualmente, um dos principais problemas no ramo automotivo é que esse barramento está com muitas mensagens no barramento, resultado da incorporação incremental de sistemas eletrônicos em automóveis, visto que há uma exigência maior de conectividade devido às exigências da sociedade e mercado. Como alternativa, vem sendo desenvolvida uma nova rede de comunicação, conhecida como CAN with Flexible Data-Rate (CAN-FD), que é um barramento com velocidade de transmissão de informação mais alta e maior capacidade de transporte de dados. Este projeto tem por objetivo principal explorar as funcionalidades da rede CAN-FD, através de simulações do trânsito de mensagens numa rede CAN-FD usando os dados de uma rede real CAN, e verificando a previsibilidade de ambas no âmbito de um protocolo que possa atender à demanda de sistemas complexos. A comparação é executada a partir de um conjunto de mensagens adicionadas na rede, para verificar os limites de transmissão de cada uma das redes, e os respectivos tempos de atraso das mensagens. Como um segundo estudo de caso, uma rede de controle em malha fechada foi desenvolvida, conectada a um barramento CAN e um barramento CAN-FD. Essa técnica de controle permitiu eliminar os ruídos que interferem no controle, e checar o limite em que o protocolo de comunicação consegue manter em uma malha de controle funcionando. Os resultados mostraram que é possível transmitir uma imensa quantidade de dados com o menor uso do busload (quantidade de mensagens transmitidas) no veículo através do uso do barramento CAN-FD, porém ainda não foi lançado no mercado um controlador do CAN-FD para realizar essa tarefa. Por outro lado, os dois protocolos, CAN-FD e CAN, tem suas previsibilidades comprometidas pois não conseguem enviar a mensagem quando o barramento está superior a 98,86% de carga. / The CAN (Controller Area Network) is a standard in the communication bus, widespread in industrial applications, particularly in automotive systems. Currently, one of the main problems in the automotive industry is that this bus is with many messages on the bus, the result of incremental incorporation of electronic systems in automobiles, since there is a greater demand for connectivity due to the demands of society and the market. Alternatively, it has been developed a new communications network, known as CAN with Flexible Data-Rate (CAN-FD), which is a bus with transmission speeds higher and higher capacity data transport information. This project\'s main objective is to explore the features of the network CAN-FD, through simulations of the traffic of messages on a CAN network FD using data from a real CAN network, and verifying the predictability both in the context of a protocol that can meet the demand complex systems. The comparison is performed from a set of messages added to the network to verify the boundaries of each of the transmission networks and the respective delay times of the messages. As a second case study, a network of closed-loop control was developed, connected to a CAN bus and CAN bus FD. This control technique has eliminated the noises that interfere with the control and check the extent that the communication protocol can keep a control loop running. The results showed that it is possible to transmit a huge amount of data with the lowest usage busload (amount of transmitted messages) to the vehicle through the use of CAN bus FD, but not yet released to market a CAN controller FD to accomplish this task . Moreover, both protocols, CAN-FD and CAN has its predictability compromised because they are unable to send the message when the bus is more than 98.86% load.
9

Návrh zařízení pro demonstraci a testování produktu NCV7471 / Design of module for demonstration and testing of system basis chips NCV7471

Kresta, Martin January 2013 (has links)
Práce se zabývá návrhem automobilové elektronické řídicí jednotky (ECU) s funkcí partial networking definovanou normou ISO 11898-6. Cílem je navrhnout a vytvořit demonstrační ECU s použitím system basis chip NCV7471. Protože NCV7471 obsahuje standardní CAN transceiver, funkce partial networking je realizována pouze softwarem řídicí jednotky. Práce zvažuje možné způsoby realizace jak HW, tak SW části, tak aby byla zajištěna nízká spotřeba ECU v různých operačních módech, a snaží se sledovat současné trendy v automobilovém průmyslu.
10

Single Board Computer for Standardized Onboard Vehicle Network

Aristotelous, Andreas January 2016 (has links)
This master thesis project was carried in collaboration with Keolis AB. One of the company’s goals is to seek for a possible replacement to expensive custom hardware units by cheap single board computers. As a test case, a simple application is proposed, which implements driver identification by scanning the barcode of driving license (personnummer). The main objective of this project is to find a suitable single board computer, to implement the proposed driver identification application, to send the driving license number along with the timestamp in a web page and test the functionality of the single board computer according to procedures specified in ISO and IEC standards for road vehicles. A parser that analyzes the input string of a barcode reader was implemented in C programming language. The barcode reader scans a barcode or a QR code and the parser returns the content of the barcode symbol in ASCII character format. The driver license number as well as the timestamp should be published to a web page. A webpage was created using the Django Web Framework, which is a database-driven website. Each time a driving license barcode is scanned, a POST Http request method is performed and both the driving license and timestamp are stored in a SQLite database. Each time a GET request method is performed the data stored in the SQLite database is retrieved and presented in the website. The communication between the single board computer Raspberry Pi and the Django framework is achieved using cURL, which is an open source command line tool and library for transferring data with URL syntax. The data of the website will be manipulated in the backend. Moreover, heat and humidity environmental testing were performed as described in ISO and IEC standards for road vehicles, to evaluate the functionality of the system under certain environmental conditions. These tests showed the working temperature range and the humidity range that the Raspberry Pi can tolerate. As a conclusion, it can be stated that Raspberry Pi can be used in the passenger compartment with expected temperatures to be below 100 Celsius, but not in the engine compartment where temperatures more than 100 Celsius can occur. In addition, Raspberry Pi can perform in all the levels of humidity that has been tested. If it is necessary to be employed in other bus compartment with increased temperature, a more expensive robust embedded single board Linux computer should be chosen. Future work should include vibrations and immunity testing, in order to fully qualify with the ISO and IEC standards. These types of tests are costly and should therefore be performed by automotive manufacturers or other parties who are expected to bear such a cost. / Detta examensarbete genomfördes i samarbete med Keolis Sverige AB. Ett av företagets mål är att söka efter möjliga system som ersättning till dyra, specialanpassade hårdvaruenheter och istället övergå till billiga enkortsdatorer. Som ett testfall föreslås ett enkelt program, som genomför identifiering av föraren genom att skanna streckkoden på körkortet (personnummer). Huvudsyftet med projektet är att hitta en lämplig enkortsdator, att implementera den föreslagna föraridentifieringsapplikationen, skicka körkortsnumret/personnumret med tidsstämpel till en webbsida och testa funktionaliteten hos enkortsdator enligt testrutiner som beskrivs av ISO- och IEC-standarder för vägfordon. En parser som analyserar indatasträngen av en streckkodsläsare implementerades i programmeringsspråket C. Streckkodsläsaren skannar en streckkod eller en QR-kod och parsern returnerar innehållet i streckkoden på ASCIIteckenformat. Körkortsnumret samt tidsstämpel publiceras på en webbsida. En webbsida har skapats med Django Web Framework, som är en databasdriven webbplats. Varje gång körkortets streckkod skannas, skickas en POST http-begäransmetod som utförs varvid både körkort och tidsstämpel lagras i en SQLite databas. Varje gång en GET-begäran skickas, lagras data i SQLite databasen och presenteras på webbplatsen. Kommunikationen mellan enkortsdatorn Raspberry Pi och ett Django-ramverk uppnås med hjälp av cURL, som är ett kommandoradsverktyg med öppen källkod, och ett bibliotek för att överföra data med URL-syntax. Uppgifterna på webbplatsen manipuleras i backend. Miljötålighetsprovning med avseende på värme- och fuktighet har utförts för att utvärdera systemets funktionalitet under specifika miljöförhållanden. Testerna specificeras i ISO- och IEC-standarder för vägfordon. Dessa tester visade vilka arbetstemperaturer och vilken luftfuktighet som Raspberry Pi klarar. Det kan konstateras att Raspberry Pi kan användas i passagerarutrymmet, där temperaturen förväntas ligga under 100 Celsius, men inte i motorrummet där temperaturer högre än 100 Celsius kan förekomma. Vidare har Raspberry Pi visat sig fungera vid de nivåer av luftfuktighet som har förkommit i testerna. I de fall där systemet skall användas i miljöer med högre temperaturer bör en dyrare och mer robust inbyggd (embedded) Linux-enkortsdator väljas. Det framtida arbetet bör omfatta vibrations- och elstörningstester för att fullt ut säkerställa att systemet klarar gällande ISO- och IEC-standarder. Dessa typer av test är kostsamma och bör därför genomföras av fordonstillverkare eller andra aktörer som förväntas kunna bära en sådan kostnad.

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