Dissertations / Theses: 'Controller Area Network (Computer network)'

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Lambert, Aric Brian. "A controller area network simulation application program for Microsoft Windows." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/958782.

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My thesis is to design a Controlled Area Network (CAN) simulator For Microsoft Windows. In a modern world we deal with complex mechanical systems that require special electronic control to guarantee ultimate safety and efficiency. These electronic control systems are responsible for monitoring subsystems within the mechanical systems. A good example of this is the motor vehicles that are being driven on the road today. These vehicles have been designed with increased safety and efficiency, such as electronic controlled anti lock breaks, fuel injection, and power control steering. To run all of these components, the car needs a very well designed protocol to be able to control series of messages being passed from one subsystem to another. To determine which message being passed has higher priority than any other messages. To deal with such circumstances, the Controlled Area Network (CAN) was designed. The purpose of the CAN simulator is to gather statistical information concerning the arbitration, message transfer, error detection, error signaling, and retransmision. The CAN simulating model will consist of one to sixty nodes. Each node is considered as a subsystem for the CAN simulator. The subsystems will be characterized as the breaks, engine, transmission, or any part of a car which needs to be connected to the CAN system. Each node will send one to ten messages through the CAN system. The CAN system will take the messages from the nodes and place them into an Arrival queue. Each node will have its own Arrival queue, and no nodes can have two messages on the bus at the same time. The messages will be sorted in the queues in the order of the time needed to be released onto the bus. There will be an internal clock that will monitor the time for when the messages are needed to be placed onto the bus. If there is a situation where two messages need to be sent at the same time, the arbitrator will determine the priority of the messages to be placed onto the bus. Once the message is on the bus, it will go to a transfer queue. Periodically, there will be an error signal sent with the message that will be detected by the error detection, and it will be required that the message to be retransmitted. At critical points on the simulation, statistical information will be gathered for an analyzation. Some examples of information to be analyzed are 1) verification of the simulation performance on a single node with a single message, 2) network load which is a rate of a utilized bus time to the total bus time, 3) network throughput which is a total number of messages that are transmitted per second, and 4) average response time which will be the average time taken by all messages to gain bus access.PLATFORM DESCRIPTIONThe computer to be used in this project will be an Intel Pentum 100 with 16 megs RAM, two 853 megabyte harddrive, and a 17 inch super VGA monitor. The user interface will be windows 3.1 application. The compiling language to be used will be Microsoft Visual C++.
Department of Computer Science

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Emani, Krishna Chaitanya Suryavenkata. "Application of hybrid ARQ to controller area networks." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Krishna_C_Emani_09007dcc804e7970.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 2007.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed April 21, 2008) Includes bibliographical references (p. 48).

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Ünal, İlker Kutlu Akif. "CAN (Control Area Network) üzerinden PIC programlama /." Isparta: SDÜ Fen Bilimleri Enstitüsü, 2006. http://tez.sdu.edu.tr/Tezler/TF00988.pdf.

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Ren, Fei. "Performance improvements of automobile communication protocols in electromagnetic interference environments." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Ren_09007dcc80487aed.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 2007.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed March 27, 2008) Includes bibliographical references (p. 55-56).

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Keskin, Ugur. "Time-triggered Controller Area Network (ttcan) Communication Scheduling: A Systematic Approach." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609877/index.pdf.

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Time-Triggered Controller Area Network (TTCAN) is a hybrid communication paradigm with combining both time-triggered and event-triggered traffic scheduling. Different from the standard Controller Area Network (CAN), communication in TTCAN is performed according to a pre-computed, fixed (during system run) schedule that is called as TTCAN System Matrix. Thus, communication performance of TTCAN network is directly related to structure of the system matrix, which makes the design of system matrix a crucial process. The study in this thesis consists of the extended work on the development of a systematic approach for system matrix construction. Methods for periodic message scheduling and an approach for aperiodic message scheduling are proposed with the aim of constructing a feasible system matrix, combining three important aspects: message properties, protocol constraints and system performance requirements in terms of designated performance metrics. Also, system matrix design, analyses and performance evaluation are performed on example message sets with the help of two developed software tools.

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Appel, Matt Andrew. "Security Control Mechanism for Safety Critical Functions Operating on Automotive Controller Area Network." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587645195243586.

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Theron, Pieter. "Distributed control system network for an electrostatic roll separator." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/2709.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2006.
The distributed control system network involves analog data acquisition nodes interconnected through CAN and USB protocol interfaces to form a network. The network is designed to be generically applicable to various control problems. This network of controllers was specifically utilised on a scaled-down electrostatic roll separator plant used in the mineral processing industry. A SISO and a MIMO regulator was designed to demonstrate the regulation of plant parameters. The MIMO regulator was employed in a scheme that optimises the plant yield automatically. Analog data acquisition nodes were designed and built especially for the purposes of this project. These nodes were installed on the electrostatic roll separator plant. PC based application software was written so that plant ID experiments could be performed. SISO and MIMO regulators along with a yield optimising scheme was designed and implemented in the application software. Both SISO and MIMO regulators successfully regulated plant outputs. The nonconducting mineral product grade was regulated by the SISO regulator. The non-conducting mineral product grade and conductor mineral mass flow was regulated by the MIMO regulator. The yield optimiser successfully employed the MIMO regulator to optimise the plant yield automatically.

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Ford, Walter Davis Gravagne Ian A. "Development and implementation of real-time distributed network with the CAN protocol." Waco, Tex. : Baylor University, 2005. http://hdl.handle.net/2104/2999.

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Civelek, Utku. "A Software Tool For Vehicle Calibration, Diagnosis And Test Viacontroller Area Network." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614836/index.pdf.

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Controller Area Networks (CAN&rsquo
s) in vehicles need highly sophisticated software tools to be designed and tested in development and production phases. These tools consume a lot of computer resources and usually have complex user interfaces. Therefore, they are not feasible for vehicle service stations where low-performance computers are used and the workers not very familiar with software are employed. In this thesis, we develop a measurement, calibration, test and diagnosis program -diaCAN- that is suitable for service stations. diaCAN can transmit and receive messages over 3 CAN bus channels. It can display and plot the data received from the bus, import network message and Electronic Control Unit (ECU) configurations, and record bus traffic with standard file formats. Moreover, diaCAN can calibrate ECU values, acquire fault records and test vehicle components with CAN Calibration Protocol functions. All of these capabilities are verified and evaluated on a test bed with real CAN bus and ECUs.

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Musetha, Rendani D. "The design of CAN nodes for minimising cables on the SUNSAT's TCMD system." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/49793.

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Thesis (MScEng)--Stellenbosch University, 2003.
ENGLISH ABSTRACT: The aim of this thesis is to investigate a design of a microcontroller based embedded system that will be used to minimise cable harness on the SUNSAT micro-satellite. The system is called CAN node. The CAN node(s) implements CAN (Controller Area Network) serial bus architecture protocol. The protocol is implemented on the two nodes to transport data from the TCMD tot he 0 ther trays 0 f SUNSAT. CAN node( s) design proj ect focuses on the TCMD tray, because it is the central point for data communication in SUNSAT and it acts as the eyes and hands of the satellite's operator. As a result most of the communication cables are located at this tray. The two nodes are called TX-node and RX-nodes. The TX-node is used to collect data from the TCMD tray and transmits them serially to RX-node. The RX-nodes receives the TCMD data from TX-node and transmits these data to their respective nodes. In application RX-nodes need to be ten, but only one is used for testing purpose. The design had its shortcomings, of which they are discussed in this thesis. The recommendations of an ideal system are also given to elaborate how the system should behave in the real situation. Despite its shortcomings, the CAN node(s) project has successfully proven that cable harness on the TCMD tray of SUNSAT can be minimised by using CAN technology.
AFRIKAANSE OPSOMMING: Die doel van hierdie tesis is om die ontwerp van 'n mikro-beheerder gebaseerde stelsel wat die SUNSA T mikro-satelliet kabel harnas sal verklein, te ondersoek. Die stelsel word die CAN nodus genoem. Die CAN nodus implementeer die CAN (Controller Area Network) bus argitektuur protokol. Die protokol is op twee nodusse geïmplementeer om data vanaf die TCMD na ander laaie van SUNSAT te voer. Die CAN nodus ontwerp fokus op die TCMD laai, want dit is die sentrale punt vir data kommunikasie in SUNSA T en dit tree soos die oog en hande van die satelliet operateur op. As 'n gevolg, is die meeste van die kommunikasie kabels in hierdie laai. Die twee nodusse is genoem TXnodus en RX-nodus. TX-nodus word gebruik om die data van die TCMD af te kollekteer en dan versprei hulle tot hulle onderskeie nodusse. In die toepaslik moet daar tien RX-nodusse wees, maar net een is gebruik terwille van die toets. Die ontwerp het sy eie tekortkomings, wat in hierdie tesis bespreek word. Die rekommendasie van 'n ideale stelsel is ook gemaak om te bewys hoe die stelsel dit in 'n ware situasie moet gedra. Ongeag die tekortkomings daarvan, het die CAN-nodus projek suksesvol bewys dat die kabel harnas in die TCMD laai van SUNSAT kan verminder word deur die gebruik van die CAN tegnologie.

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Marjanovic, Uros. "Exploration of a method for constructing an industrial ethernet with ethernet enabled devices in an industrial environment using a Cisco adaptive security appliance /." View online, 2009. http://repository.eiu.edu/theses/docs/32211131565124.pdf.

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Sjöberg, Andreas. "BSR Prestandaverktyg / BSR Performance tool : Prestandamätning via diagnosuttag över CAN / Performance measure via diagnostic socket over CAN." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-5428.

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This abstract describes the bachelor degree thesis in computer technology at Växjö University. The company BSR in Växjö has requested an application that can measure a cars performance, with attributes like acceleration times and engine power estimation. The communication between car and computer is via the USB port on the computer and the OBD-II socket on the car with the network protocol CAN, controller area network. Cars from VAG have been the primary focus group and the application has been tested on a Volkswagen Passat CC from 2009. The system is developed in the programming language C# in the environment Visual Studio with the framework .NET. This report describes the network protocol CAN, which is an essential part in understanding how thecommunication works. Also approach, analyze and implementation is described.

Denna rapport beskriver ett examensarbete för högskoleingenjörsexamen i datorteknik vid Växjö universitet. Företaget BSR i Växjö har önskat ett program som kan mäta en bils prestanda, med attribut som accelerationstider och effektuppskattning. Kommunikationen mellan bil och dator sker via USB-port på datorn och OBD-II-uttag på bilen med protokollet CAN, controller area network. Bilar från VAG har i första hand varit målgruppen och programmet har testats på en Volkswagen Passat CC från 2009. Systemet har utvecklats i programspråket C# och i utvecklingsmiljön Visual Studio med ramverket .NET. Rapporten beskriver nätverksprotokollet CAN, vilket är en väsentlig del i att förstå hur kommunikationen går till. Även tillvägagångssätt, analys och implementering beskrivs.

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Farr, Xandri C. "Development of a fault-tolerant bus system suitable for a high-performance, embedded, real-time application on SUNSAT's ADCS." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51686.

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Thesis (MEng)--University of Stellenbosch, 2000.
ENGLISH ABSTRACT: The Attitude Determination and Control System (ADCS) of the Stellenbosch University Satellite (SUNSAT I) is an integrated system providing some redundancy and the necessary data management to control the spacecraft. However, the redundancy is not easily accessible and there is a lack in flexibility when testing individual modules during integration or when the system needs to be extended. The objective of this thesis was thus to develop a high reliability, flexible, modular communication system that included some type of redundancy to manage real-time data and to prevent severe malfunctioning of the entire system. The first step in the project's development methodology was to summarise the requirements and specifications by studying the current ADCS architecture and data management. An investigation into the Controller Area Network (CAN) protocol showed that this technology would fit the requirements very well, leading to the design and implementation of several concept topologies based on CAN. Thereafter, a demonstration model consisting of three prototype nodes was composed. The performance of the so called dual CAN node was analysed and an extrapolation was 'made to determine whether the architecture could support the complete ADCS. It was demonstrated that the dual CAN node provides enough room to accommodate all the processors, actuators and sensors of the ADCS. At the same time, it was shown that reliability and robustness was increased by enhanced redundancy at a node-level as well as at the greater system-level. A dual CAN bus was provided for redundancy at a node-level. At the system-level, the command and data-gathering modules (ACP or OBC's) can now effectively be multiplexed on the network of actuators and sensors. Furthermore, it was shown that error detection capabilities and diagnostics can be enhanced and the complexity of the communication architecture and related wiring harnesses can be reduced. This allows easier access to modules and simplifies development.
AFRIKAANSE OPSOMMING: Die Attitude Determination and Control System (ADCS) van Stellenbosch University Satellite (SUNSAT I) is 'n geïntegreerde stelsel wat voorsiening maak vir 'n mate van oortolligheid en 'n vermoeë om stelseldata te bestuur vir goeie satellietbeheer. Nietemin, hierdie oortolligheid is nie baie toeganklik nie en daar is 'n gebrek aan aanpasbaarheid tydens die toets en integrasie van individuele modules of moontlike stelseluitbreidings. Die doelwit van hierdie tesis was dus die ontwikkeling van 'n betroubare, aanpasbare, modulêre kommunikasie stelsel wat 'n tipe oortolligheid insluit sodat intydse data bestuur kan word en algehele stelselondergang vermy kan word. Die eerste stap in die projek se ontwikkelings metodiek was om 'n opsomming te verkry van die vereistes en spesifikasies deur die huidige ADCS se argitektuur en databestuur te ondersoek. 'n Ondersoek na die Controller Area Network (CAN) protokol het getoon dat hierdie tegnologie aan baie van die vereistes voldoen. Dit het aanleiding gegee tot die ontwerp en implementering van 'n paar konsep ontwerpe gebaseer op CAN. Daarna is 'n demonstrasie model bestaande uit drie prototipe nodusse gebou. Die werksverrigting van die sogenoemde dual CAN node, is ondersoek en 'n ekstrapolasie was gemaak om vas te stelof die argitektuur die volkome ADCS kan huisves. Deur demonstrasie was daar getoon dat die dual CAN node wel genoeg ruimte verskaf om al die verwerkers, aktueerders en sensors van die ADCS te akkommodeer. Daar was terselfdertyd getoon dat betroubaarheid en robuustheid verhoog is deur die verbeterde oortolligheid op 'n node-vlak sowel as op die groter stelsel-vlak. 'n Dubbele CAN bus is gebruik vir oortolligheid op 'n node-vlak. Op 'n stelsel-vlak kan die bevel-en-dataversamelings modules (ACP en aBC's) effektief gemultipleks word op die netwerk van aktueerders en sensors. Daar was verder getoon dat die foutopspoorings vermoeë en diagnostiese vermoeë verbeter kan word en die kompleksiteit van die kommunikasie argitektuur en ooreenkomstige kabelharnasse vereenvoudig kan word. Die gevolg is vereenvoudigde toegang tot modules en vergemaklikde opgradering.

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Turan, Ceyhan Kutlu Akif. "Endüstriyel ağ kullanarak LabVIEW ile elektronik deney modüllerinin yönetimi /." Isparta : SDÜ Fen Bilimleri Enstitüsü, 2007. http://tez.sdu.edu.tr/Tezler/TF01125.pdf.

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Groom, Eddie L. "Ethernet controller design for an embedded system using FPGA technology." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008m/groom.pdf.

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Abraham, Michael. "Effektivare fordonsdiagnostik över CAN-bussen genom UDS." Thesis, Linköpings universitet, Programvara och system, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167819.

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Cars are getting more technically advanced and more ECUs are being developed that results in increased safety and comfort, and a lower environmental impact. This leads to a complex work to test and verify that all the different ECUs are functioning as intended in various situations. Vehicle diagnostics often requires software from third parties that are often expensive. Syntronic AB are currently using software with a much larger functionality than needed to perform vehicle diagnostics and much of the unneces-sary functionality in the software leads to unnecessarily long runtimes for the program. By studying CAN and UDS and analyzing how they interact, I was able to create a software by systematically developing the software with two interfaces connected to each computer and continuously testing the implementation against the theoretical basis and then finally testing the software in a vehicle. The created software was better suited to the needs of the company and the more functionality-adapted software could perform the same diagnostics faster than the company’s current software. The most used UDS-service by the company could be implemented and the created software enabled more UDS services to be added without modifications of the main program or its features.
Bilar blir allt mer tekniskt avancerade och fler ECU:er har utvecklats som har medfört ökad säkerhet och komfort samt minskad miljöpåverkan. Det resulterar i ett komplext arbete med att testa och verifiera att alla olika ECU:er fungerar som de skall i olika situationer. Fordonsdiagnostik kräver ofta program-varor från olika aktörer där licenserna ofta är dyra. Idag använder Syntronic AB en programvara med en mycket större funktionalitet än de behöver för att utföra fordonsdiagnostik och all denna onödiga funktionalitet i programvaran har medfört onödigt långa körtider. Genom att studera CAN och UDS och genom att analysera hur de samverkar kunde jag skapa en programvara genom att systematiskt utveckla programvaran med två gränssnitt inkopplade i var sin dator och kontinuerligt testa implementationen mot den teoretiska grunden för att slutligen testa programvaran i en bil. Den skapade programvaran var bättre anpassad för företagets behov och den mer funktionalitetsanpassade programvaran kunde utföra samma diagnostik snabbare än företagets nuvarande programvara. Den UDS-tjänst företaget använde mest kunde implementeras och den skapade programvaran konstruerades så att fler UDS-tjänster kunde läggas till utan modifikation av huvudprogrammet eller dess funktioner.

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Andersson, Robin. "CAN-bus Multi-mixed IDS : A combinatory approach for intrusion detection in the controller area network of personal vehicles." Thesis, Malmö universitet, Fakulteten för teknik och samhälle (TS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-43450.

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With the digitalization and the ever more computerization of personal vehicles, new attack surfaces are introduced, challenging the security of the in-vehicle network. There is never such a thing as fully securing any computer system, nor learning all the methods of attack in order to prevent a break-in into a system. Instead, with sophisticated methods, we can focus on detecting and preventing attacks from being performed inside a system. The current state of the art of such methods, named intrusion detection systems (IDS), is divided into two main approaches. One approach makes its models very confident of detecting malicious activity, however only on activities that has been previously learned by this model. The second approach is very good at constructing models for detecting any type of malicious activity, even if never studied by the model before, but with less confidence. In this thesis, a new approach is suggested with a redesigned architecture for an intrusion detection system called Multi-mixed IDS. Where we take a middle ground between the two standardized approaches, trying to find a combination of both sides strengths and eliminating its weaknesses. This thesis aims to deliver a proof of concept for a new approach in the current state of the art in the CAN-bus security research field. This thesis also brings up some background knowledge about CAN and intrusion detection systems, discussing their strengths and weaknesses in further detail. Additionally, a brief overview from a handpick of research contributions from the field are discussed. Further, a simple architecture is suggested, three individual detection models are trained and combined to be tested against a CAN-bus dataset. Finally, the results are examined and evaluated. The results from the suggested approach shows somewhat poor results compared to other suggested algorithms within the field. However, it also shows some good potential, if better decision methods between the individual algorithms that constructs the model can be found.

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Thakrar, Nikhil. "Network Traffic Regulator for Diagnostic Messages in Modular Product." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-203789.

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The aim of this thesis project is to explore a network traffic regulator using bandwidth management techniques that regulates data traffic with the objective to use the network bandwidth to its maximum capacity while ensuring that the network is not overloaded. The bandwidth in the existing network architecture is shared between two co-existing, distinct data flows for on-board communication and diagnostic communication in an in-vehicle network. The diagnostic communication must not interfere with the more critical on-board communication and it should comply with the remaining bandwidth. In the existing solution, fixed delays are imposed on the data traffic which result in a waste of network capacity. The approach presented in this thesis uses two regulation algorithms for different types of diagnostic services. One regulation algorithm is activated for diagnostic services that require data segmentation and multiple data frames to accommodate the transferred data. This algorithm makes use of the Flow Control parameter Separation Time specified in ISO 15765-1:2011 "Road vehicles -- Diagnostic communication over Controller Area Network (DoCAN)". The other algorithm regulates diagnostic services that generate bursts of single frames where data segmentation is not required and it does so using traffic shaping techniques. The results in this thesis show that the network traffic indeed can be regulated for different diagnostic services by using the two mentioned regulation algorithms. The results also show that data is not lost due to high network utilisation and that the bandwidth is used to its maximum capacity without having to impose fixed delays on the network system. The regulator is adaptive in the sense that it can be used for different vehicle configurations with compatible network systems to ensure quality of service and a robust network system.
I detta examensarbete är målet att utforska en metod för att reglera nätverkstrafik genom att använda tekniker inom bandbreddshantering med syfte att utnyttja bandbredden till dess maximala kapacitet utan att överbelasta nätverket. Bandbredden i den nuvarande nätverksarkitekturen delas mellan två dataflöden för onboard kommunikation och diagnostisk kommunikation. Den diagnostiska kommunikationen får inte på någotvis störa onboard kommunkationen och får anpassa sig till den bandbredd som kvarstår. I det existerande systemet införs fixa fördröjningar i nätverkstrafiken vilket medför ett onödigt slöseri på nätverkskapaciteten och som också medför att de diagnostiska tjänsterna tar längre tid att utföra. Tillvägagångssättet som presenteras i detta arbete använder två regleringsalgoritmer för olika typer av diagnostiska tjänster. En algoritm används för tjänster som kräver datasegmentering och flera dataramar för att skicka data. Den här algoritmen använder parametern Separation Time som är specificerad i ISO standarden 15765-1:2011 "Road vehicles -- Diagnostic communication over Controller Area Network (DoCAN)". Diagnostiska tjänster som istället genererar en skur av enstaka dataramar regleras med en traffic shaping algoritm som heter Token Bucket. Resultaten i detta arbete visar att det går att reglera nätverkstrafiken för olika typer av diagnostiska tjänster genom att använda de två utvecklade algoritmerna. Resultaten visar också att data inte går förlorat vid höga nätverkslaster och att bandbredden används maximalt utan att behöva införa fixa fördröjningar i nätverkssystemet. Regleraren är adaptiv i bemärkelsen att den kan användas för alla tänkbara fordonskonfigurationer med kompatibelt nätverkssystem för att försäkra quality of service och robusthet.

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Nolte, Thomas. "Share-Driven Scheduling of Embedded Networks." Doctoral thesis, Mälardalen University, Department of Computer Science and Electronics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-134.

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Many products are built from more or less independently developed subsystems. For instance, a car consists of subsystems for transmission, braking, suspension, etc. These subsystems are frequently controlled by an embedded computer system. In the automotive industry, as well as in other application domains, there is currently a trend from an approach where subsystems have dedicated computer hardware and other resources (a federated approach) to an approach where subsystems share hardware and other resources (an integrated approach). This is motivated by a strong pressure to reduce product cost, at the same time as an increasing number of subsystems are being introduced.

When integrating subsystems, it is desirable that guarantees valid before integration are also valid after integration, since this would eliminate the need for costly reverifications. The computer network is a resource that is typically shared among all subsystems. Hence, a central issue when integrating subsystems is to provide an efficient scheduling of message transmissions on the network. There are essentially three families of schedulers that can be used: priority-driven schedulers that assign priorities to messages, time-driven schedulers that assign specific time-slots for transmission of specific messages, and share-driven schedulers that assign shares of the available network capacity to groups of messages.

This thesis presents a framework for share-driven scheduling, to be implemented and used in embedded networks, with the aim to facilitate subsystem integration by reducing the risk of interference between subsystems. The framework is applied in the automotive domain.

The initial parts of the thesis give an overview of systems, subsystems and network technologies found and used in the automotive domain. Then, the share-driven scheduling framework is presented, analytically investigated and proven, as well as evaluated in a simulation study. Finally it is shown how the framework is to be configured and used in the context of subsystem integration. The results show that the framework allows for flexible and efficient scheduling of messages with real-time constraints, facilitating integration of subsystems from a network point of view.

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Prayaga, Krishna Venkatesh. "ANALYSIS AND OPTIMIZATION OF ELECTRICAL SYSTEMS IN A SOLAR CAR WITH APPLICATIONS TO GATO DEL SOL III-IV." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_theses/29.

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Gato del Sol III, was powered by a solar array of 480 Silicon mono-crystalline photovoltaic cells. Maximum Power Point trackers efficiently made use of these cells and tracked the optimal load. The cells were mounted on a fiber glass and foam core composite shell. The shell rides on a lightweight aluminum space frame chassis, which is powered by a 95% efficient brushless DC motor. Gato del Sol IV was the University of Kentucky Solar Car Team’s (UKSCT) entry into the American Solar Car Challenge (ASC) 2010 event. The car makes use of 310 high density lithium-polymer batteries to account for a 5 kWh pack, enough to travel over 75 miles at 40 mph without power generated by the array. An in-house battery protection system and charge balancing system ensure safe and efficient use of the batteries. Various electrical sub-systems on the car communicate among each other via Controller Area Network (CAN). This real time data is then transmitted to an external computer via RF communication for data collection.

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Thesnaar, Emile Jacobus. "Development of a radiation resistant communication node for satellite sub-systems." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86510.

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Thesis (MEng)--Stellenbosch University, 2014.
ENGLISH ABSTRACT: Within a complex electronic system, sub-system communication forms the backbone of the functionality of any satellite. It allows multiple processors to run simultaneously and data to be shared amongst them. Without it, a single processor would have to control the entire satellite. Not only would such a design then be overly complicated, but the processor would also not have sufficient capacity to service all the components efficiently. Furthermore the detrimental effects that radiation have on integrated circuits are well documented and can be anything from a single bit flip to a complete integrated circuit failure. If not repaired, a failure on a sub-system communication bus could lead to the loss of the entire satellite. Die goal is to create more radiation resistant Controller-Area-Network (CAN) node. Since a full triple modular redundant design will have a large footprint and high power consumption, a combination of techniques will be applied and tested. The goal is to achieve improved footprint utilisation over triple modular redundancy, while still maintaining good resistance to Single Event Upsets (SEU). By applying simulation, it was sufficiently proven that the implementation of the individual techniques used functioned according to expectations. These techniques included error detection and correction using Hamming Codes, single event transient filter and triple modular redundancy. Having applied these mitigation techniques, the footprint of the CAN controller increased by only 116%. Simulation showed that the Error Detection and Correction and Triple Modular Redundancy worked effectively with the CAN controller, and that the CAN controller could function as originally intended. Using radiation testing, the design proved to be more resistant to SEUs than the unmitigated CAN controller. It was thus shown that through using a combination of mitigation techniques, it is possible to develop an optimal design with a high level of resistance against Single Event Upsets, utilizing a smaller footprint than implementing Triple Modular Redundancy.
AFRIKAANSE OPSOMMING: Sub-stelsel kommunikasie vorm die basis van die funksionaliteit in ’n komplekse elektroniese stelsel soos ’n satelliet. Dit skep die vermoë om veelvoudige verwerkers gelyktydig te laat funksioneer en inligting tussen hulle te deel. Sonder sub-stelsel kommunikasie, sal ’n enkele verwerker die hele sateliet moet beheer. Dit sal nie net die hele ontwerp oorkompliseer nie, maar die verwerker sal ook nie genoeg kapisteit hê om al die komponente effektief te diens nie. Die newe-effekte van bestraling op geïntegreerde stroombane is goed gedokumenteer en kan wissel van ’n enkele omgekeerde bis, tot die vernietiging van die geïntegreerde stroombaan. Indien die fout in die kommunikasiestelsel nie herstel word nie, kan dit lei tot die verlies van die hele sateliet. Die doel is om ’n meer bestraling bestande Controller-Area-Network (CAN) nodus te skep. Aangesien ’n volle drie-dubbele-modulêre-oortollige ontwerp ’n baie groot area beslaan en hoë krag verbruik het, gaan ’n kombinasie van versagting tegnieke toegepas en ge-evalueer word. Die doel is om beter area benutting as die drie-dubble-modulêre-oortollige ontwerp te kry, terwyl ’n goeie weerstand teen foute behoue bly. Deur middel van simulasies is voldoende bewyse gelewer dat die implimentasie van die individuele versagting tegnieke soos verwag funktioneer. Hierdie tegnieke sluit in, fout opsporing en regstelling deur middel van Hamming kodes, enkele geval oorgangs verskynsel filter asook drie-dubbele-modulêre-oortollige ontwerp. Nadat versagting meganismes toegepas is, het die area verbruik van die CAN beheerder toegeneem met slegs 116%. Simulasies het bewys dat Fout Opsporing en Regstelling en Drie-Dubbele-Modulêre-Oortollige ontwerp tegnieke binne die CAN beheerder korrek funktioneer, terwyl die CAN beheerder self funktioneer soos dit oorspronklik gefunksioneer het. Deur middel van bestralingstoetse, is dit bewys dat die ontwerp meer bestand is teen foute geïnduseer deur bestraling as die onbeskermde CAN beheerder. Dit is dus bewys dat deur gebruik te maak van verskeie versagting tegnieke dit moontlik is om ’n optimale ontwerp te implimenteer, met ’n hoë weerstand teen foute, maar met ’n laer area verbruik as die van ’n Drie-dubbele-Modulêre-Oortollige ontwerp.

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Andersson, Robin. "Combining Anomaly- and Signaturebased Algorithms for IntrusionDetection in CAN-bus : A suggested approach for building precise and adaptiveintrusion detection systems to controller area networks." Thesis, Malmö universitet, Fakulteten för teknik och samhälle (TS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-43450.

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With the digitalization and the ever more computerization of personal vehicles, new attack surfaces are introduced, challenging the security of the in-vehicle network. There is never such a thing as fully securing any computer system, nor learning all the methods of attack in order to prevent a break-in into a system. Instead, with sophisticated methods, we can focus on detecting and preventing attacks from being performed inside a system. The current state of the art of such methods, named intrusion detection systems (IDS), is divided into two main approaches. One approach makes its models very confident of detecting malicious activity, however only on activities that has been previously learned by this model. The second approach is very good at constructing models for detecting any type of malicious activity, even if never studied by the model before, but with less confidence. In this thesis, a new approach is suggested with a redesigned architecture for an intrusion detection system called Multi-mixed IDS. Where we take a middle ground between the two standardized approaches, trying to find a combination of both sides strengths and eliminating its weaknesses. This thesis aims to deliver a proof of concept for a new approach in the current state of the art in the CAN-bus security research field. This thesis also brings up some background knowledge about CAN and intrusion detection systems, discussing their strengths and weaknesses in further detail. Additionally, a brief overview from a handpick of research contributions from the field are discussed. Further, a simple architecture is suggested, three individual detection models are trained and combined to be tested against a CAN-bus dataset. Finally, the results are examined and evaluated. The results from the suggested approach shows somewhat poor results compared to other suggested algorithms within the field. However, it also shows some good potential, if better decision methods between the individual algorithms that constructs the model can be found.

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Robeson, Bridget M. "A local area network & wide area network design." Master's thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-12232009-020117/.

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Lingfors, Anders. "Software download over DoIP in Android." Thesis, Linköpings universitet, Programvara och system, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119562.

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The Android operating system, originally intended for smartphone devices, is now finding its way into cars and other vehicles. While the Android system already implements support for system updates, it is not suitable for use in the automotive domain. It is not compatible with modern automotive standards for diagnostic communication such as ISO 14229: Unified Diagnostic Services (UDS). This means that new tools, procedures and software would be needed to allow an Android device to be updated by a service technician in a repair shop or on the field. A better approach would be to add support for automotive diagnostic communication in Android. This way, the tools and supporting infrastructure that already exist can still be used. We have developed a solution for diagnostic communication on Android that is both modular and compatible with existing automotive standards. By using the standard ISO 13400: Diagnostic communication over Internet Protocol (DoIP), this solution enables both updating the system software on the Android device itself, as well as diagnostic communication with the ECUs on the vehicle’s internal CAN network. Thus, an existing diagnostic port based on a slower communication protocol such as CAN or J1587 could theoretically be replaced completely by the Android device’s Ethernet port. Finally, we have evaluated the performance of our implementation under various settings and conditions. These include varying the maximum size of a diagnostic message, different network settings, downloading software over a Wi-Fi link, and downloading data to multiple devices simultaneously.
Operativsystemet Android, ursprungligen avsett för smartphone-enheter, återfinns numera även i bilar och andra typer av fordon. Även om Android-systemet redan implementerar stöd för system-uppdateringar, är det inte lämpligt att använda i fordonsindustrin. Den är inte kompatibel med moderna fordons-standarder för diagnoskommunikation som t.ex. ISO:14229: Enhetliga diagnostiktjänster (UDS). Detta innebär att det skulle krävas nya verktyg, procedurer och mjukvara för att möjliggöra att en Android-enhet uppdaterades av en service-tekniker i verkstad eller i fält. Ett bättre tillvägagångssätt skulle vara att lägga till support för diagnoskommunikation i Android. På detta sätt skulle redan existerande verktyg och stödjande infrastruktur kunna fortsätta användas. Vi har utvecklat en lösning för diagnoskommunikation i Android som är både modulär och kompatibel med existerande fordonsstandarder. Genom att använda ISO 13400: Diagnostikkommunikation över Internet-protokoll (DoIP) möjliggör denna lösning både uppdatering av systemmjukvaran i själva Android-enheten, samt diagnoskommunikation med övriga styrenheter på fordonets interna CAN-nätverk. Därmed skulle en befintlig diagnosport baserad på ett långsammare kommunikationsprotokoll såsom CAN eller J1587 teoretiskt kunna ersättas helt och hållet med Android-enhetens Ethernet-port. Slutligen har vi testat vår implementations prestanda under varierande inställningar och förhållanden. Dessa inkluderar bland annat att variera den maximala storleken av ett diagnos-meddelande, olika nätverks-inställningar, att uppdatera mjukvaran över en Wi-Fi-länk, samt att uppdatera mjukvaran på flera enheter samtidigt.

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DiPirro-Beard, William David 1954. "Countermeasure Dispenser System Network Controller." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277054.

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Presented in this thesis is the Airborne Countermeasures Ejection and/or Release (ALE)-XX Cockpit Control Unit (CCU) Countermeasures Dispensing System Network Controller (CMDSNC) design. ALE-XX CCU CMDSNC was designed as part of the total ALE-XX system to replace the problematic ALE-40. Fiber optic technology is incorporated into ALE-XX as the communication medium to eliminate Electromagnetic Interference (EMI). ALE-XX CMDSNC uses a star network to solve system operation failures from the existing daisy-chain topology. A comprehensive Built-In-Test (BIT) allows fault diagnose and isolation of hardware problems reported on the CCU Visual Display. Digital electronics replace the electro-mechanical devices, lowers the number of Line Replaceable Units (LRUs), and raises the Mean-Time-Between-Failures (MTBF). The information contained herein could be used as a design aid for future CMDSNCs or other related instrumentation.

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Jeganathan, Nithyananda Siva. "A CONTROLLER AREA NETWORK LAYER FOR RECONFIGURABLE EMBEDDED SYSTEMS." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_theses/484.

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Dependable and Fault-tolerant computing is actively being pursued as a research area since the 1980s in various fields involving development of safety-critical applications. The ability of the system to provide reliable functional service as per its design is a key paradigm in dependable computing. For providing reliable service in fault-tolerant systems, dynamic reconfiguration has to be supported to enable recovery from errors (induced by faults) or graceful degradation in case of service failures. Reconfigurable Distributed applications provided a platform to develop fault-tolerant systems and these reconfigurable architectures requires an embedded network that is inherently fault-tolerant and capable of handling movement of tasks between nodes/processors within the system during dynamic reconfiguration. The embedded network should provide mechanisms for deterministic message transfer under faulty environments and support fault detection/isolation mechanisms within the network framework. This thesis describes the design, implementation and validation of an embedded networking layer using Controller Area Network (CAN) to support reconfigurable embedded systems.

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Tillberg, Emil. "Controller Area Network : Möjlig CAN-buss lösningar inom entreprenadbranschen." Thesis, Mittuniversitetet, Avdelningen för kvalitets- och maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-36881.

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Företaget engcon Nordic AB producerar redskap till entreprenadbranschen, där tiltrotator är hjärtat i deras verksamhet. För att förbättra användningen och förenkla installationen har en litteraturstudie gjorts som tittar på två delar, funktionen kring CAN-buss som grund för ett kommunikationssystem, och olika högre lager protokoll som byggs ovanpå CAN. Varför CAN-buss skapades och hur systemet fungerar är viktiga att förstå för att kunna titta på dem ovanliggande lager, kallade HLP (Higher Layer Protocol). HLP ger ett slags maskin-människa gränssnitt att arbeta emot. Typer av HLP kan vara J1939, ISOBUS eller annan. CAN-buss är den de facto standarden vad gäller fordonsnätverk där ECU:er, kallad noder, kommunicerar på en gemensam kommunikationsstam, kallad buss. För att göra detta har en snillrik teknik tagits fram för att prioritera meddelanden mellan noder, som ger datamässigt förlustfri medling. CAN-buss har även ett avancerat feldetekteringssystem på kommunikationen som ger den dess robusthet i krävande miljöer. Vad gäller olika HLP finns en mängd av dessa inom olika branscher. Alla har de gemensamt att de bygger upp ett mer eller mindre användarvänligt gränssnitt som går att implementera ovanpå CAN. Inom till exempel jordbruket använder man i hög utsträckning ISOBUS som är en egen branschstandard som delvis ser förbi konkurrensen inom sektor för att bygga ett enkelt, användarvänligt system som gynnar slutkunden på bästa sätt. Inom automation används istället CANopen, som är ett öppet system som tillåter hög interoperabilitet mellan olika enheter med så kallad profilering. Ett sista system som används inom en rad olika branscher heter CanKingdom och är det mest anpassningsbara systemet inom denna studie. För att få reda på mer branschspecifik information kring lösningar och problem gjordes även en intervjustudie inom projektet. Här intervjuades personer aktiva inom olika företag som jobbar med CAN baserade system på något sätt. Intervjuerna gjordes för att titta på relevanta problem inom deras specifika område. Som resultat specificeras fyra alternativ som projektägaren bör titta vidare på för att hitta ett system som passar dem. Det bygger på alternativ som antingen kräver access till befintlig J1939 buss, eller att bygga en mer eller mindre adapterad modell byggd på ISOBUS, CANopen eller CanKingdom.
The company engcon Nordic AB produces equipment for the construction industry, where the product called tiltrotator is the heart of their business. To improve the use and simplify the installation, a literature study has been made that looks at two parts, first the function around CAN bus as the basis for a communication system and secondly various higher layer protocols (HLP) built on top of CAN. Why CAN bus was created and how the system works is important to understand in order to look at these overlying layers, called HLP (Higher Layer Protocol), which provides a kind of machine-human interface to work with. Different types of HLP can be J1939, ISOBUS or other. CAN bus is the de facto standard for vehicle networks where ECUs (Electronic Control Unit), called nodes, communicating on a common communication network, called bus. To do this, an ingenious technique has been developed to prioritize messages between nodes, which provides data loss-free arbitration. In CAN an advanced technique for error detection on the communication has been applied, and gives CAN the robustness to be applied in tough environment. As for various HLPs, a large number of these are available in different industries. Every one of these HLP has a common that they try to build a more or less user-friendly interface that can be implemented on top of CAN. For example, in the agricultural industry, the use of ISOBUS is common, which is an industrial standard that goes beyond competition to build a simple, user-friendly system that benefits the customer to the best possible extent. In automation, instead, CANopen is used, which is an open system that allows high interoperability between different units with so-called profiling. One last system used in a number of industries is called CanKingdom and is the most adaptable system in this project. In order to find out more industry-specific information about solutions and problems, an interview study was also conducted within the project. Here, various people were interviewed, active in different companies that are involved in CAN-based systems. This was done to look at relevant problems in their specific area. As a result, four options are specified which the project owner should look at in order to find a system that suits them. It is based on alternatives that either require access to the existing J1939 bus, or to build a more or less adapted model built on ISOBUS, CANopen or CanKingdom.

Betyg: 2019-08-15

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Brande, Julia K. Jr. "Computer Network Routing with a Fuzzy Neural Network." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/29685.

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The growing usage of computer networks is requiring improvements in network technologies and management techniques so users will receive high quality service. As more individuals transmit data through a computer network, the quality of service received by the users begins to degrade. A major aspect of computer networks that is vital to quality of service is data routing. A more effective method for routing data through a computer network can assist with the new problems being encountered with today's growing networks. Effective routing algorithms use various techniques to determine the most appropriate route for transmitting data. Determining the best route through a wide area network (WAN), requires the routing algorithm to obtain information concerning all of the nodes, links, and devices present on the network. The most relevant routing information involves various measures that are often obtained in an imprecise or inaccurate manner, thus suggesting that fuzzy reasoning is a natural method to employ in an improved routing scheme. The neural network is deemed as a suitable accompaniment because it maintains the ability to learn in dynamic situations. Once the neural network is initially designed, any alterations in the computer routing environment can easily be learned by this adaptive artificial intelligence method. The capability to learn and adapt is essential in today's rapidly growing and changing computer networks. These techniques, fuzzy reasoning and neural networks, when combined together provide a very effective routing algorithm for computer networks. Computer simulation is employed to prove the new fuzzy routing algorithm outperforms the Shortest Path First (SPF) algorithm in most computer network situations. The benefits increase as the computer network migrates from a stable network to a more variable one. The advantages of applying this fuzzy routing algorithm are apparent when considering the dynamic nature of modern computer networks.
Ph. D.

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Kim, Seonghyun. "Detecting Contextual Network Anomaly in the Radio Network Controller from Bayesian Data Analysis." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180442.

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This thesis presents Bayesian approach for a contextual network anomaly detection. Network anomaly detection is important in a computer system performance monitoring perspective. Detecting a contextual anomaly is much harder since we need to take the context into account in order to explain whether it is normal or abnormal. The main idea of this thesis is to find contextual attributes from a set of indicators, then to estimate the resource loads through the Bayesian model. The proposed algorithm offers three advantages. Firstly, the model can estimate resource loads with automatically selected indicators and its credible intervals. Secondly, both point and collective contextual anomalies can be captured by the posterior predictive distribution. Lastly, the structural interpretation of the model gives us a way to find similar nodes. This thesis employs real data from Radio Network Controller (RNC) to validate the effectiveness in detecting contextual anomalies.

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Nolte, Thomas. "Reducing pessimism and increasing flexibility in the controller area network /." Västerås : Mälardalen University, 2003. http://www.mrtc.mdh.se/publications/0535.pdf.

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Hegde, Bharatkumar. "Modeling of Vehicle Controller Area Network for Control Systems Simulation." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406113558.

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Staples, John. "Local area network development standards." Master's thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-03302010-020011/.

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Sláma, Michal. "Řízení samoobslužných dveří a vzduchového pérování městského autobusu pomocí sběrnice CAN." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228814.

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The Diploma thesis is divided into 2 parts. The first one deals with the description of CAN-bus and the protocol of SAE J1939. The second part contains the practical solution to controlling of Passenger Operated Doors and controlling of Air Sprinte (ECAS). Both parts refer to contemporary (conventions/standards) and the whole task is solved in a new program environment KIBES-32.

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Saeed, Bahghtar Ibraheem. "Design of a wireless intelligent fuzzy controller network." Thesis, University of Huddersfield, 2014. http://eprints.hud.ac.uk/id/eprint/24569/.

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Since the first application of fuzzy logic in the field of control engineering, fuzzy logic control has been successfully employed in controlling a wide variety of applications, such as commercial appliances, industrial automation, robots, traffic control, cement kilns and automotive engineering. The human knowledge on controlling complex and non-linear processes can be incorporated into a controller in the form of linguistic expressions. Despite these achievements, however, there is still a lack of an empirical or analytical design study which adequately addresses a systematic auto-tuning method. Indeed, tuning is one of the most crucial parts in the overall design of fuzzy logic controllers and it has become an active research field. Various techniques have been utilised to develop algorithms to fine-tune the controller parameters from a trial and error method to very advanced optimisation techniques. The structure of fuzzy logic controllers is not straightforward as is the case in PID controllers. In addition, there is also a set of parameters that can be adjusted, and it is not always easy to find the relationship between the parameters and the controller performance measures. Moreover, in general, controllers have a wide range of setpoints; changing from one value to another requiring the controller parameters to be re-tuned in order to maintain a satisfactory performance over the entire range of setpoints. This thesis deals with the design and implementation of a new intelligent algorithm for fuzzy logic controllers in a wireless network structure. The algorithm enables the controllers to learn about their plants and systematically tune their gains. The algorithm also provides the capability of retaining the knowledge acquired during the tuning process. Furthermore, this knowledge is shared on the network through a wireless communication link with other controllers. Based on the relationships between controller gains and the closed-loop characteristics, an auto-tuning algorithm is developed. Simulation experiments using standard second order systems demonstrate the effectiveness of the algorithm with respect to auto-tuning, tracking setpoints and rejecting external disturbances. Furthermore, a zero overshoot response is produced with improvements in the transient and the steady state responses. The wireless network structure is implemented using LabVIEW by composing a network of several fuzzy controllers. The results demonstrate that the controllers are able to retain and share the knowledge.

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Darr, Matthew John. "DEVELOPMENT AND EVALUATION OF A CONTROLLER AREA NETWORK BASED AUTONOMOUS VEHICLE." UKnowledge, 2004. http://uknowledge.uky.edu/gradschool_theses/192.

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Through the work of researchers and the development of commercially availableproducts, automated guidance has become a viable option for agricultural producers.Some of the limitations of commercially available technologies are that they onlyautomate one function of the agricultural vehicle and that the systems are proprietary toa single machine model.The objective of this project was to evaluate a controller area network (CAN bus)as the basis of an automated guidance system. The prototype system utilized severalmicrocontroller-driven nodes to act as control points along a system wide CAN bus.Messages were transferred to the steering, transmission, and hitch control nodes from atask computer. The task computer utilized global positioning system data to determinethe appropriate control commands.Infield testing demonstrated that each of the control nodes could be controlledsimultaneously over the CAN bus. Results showed that the task computer adequatelyapplied a feedback control model to the system and achieved guidance accuracy levelswell within the range sought. Testing also demonstrated the system's ability tocomplete normal field operations such as headland turning and implement control.

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Lee, Myung Sub 1953. "PC-based design of network management package for broadband network." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276772.

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The description of a Network Management Package (NMP) for Packet Communications Units (PCUs) in a Local Area Network (LAN) is presented. The LAN consists of a Sytek LocalNet 20, a Sytek System 2000, a Sytek System 6000, and a Concord Data Systems Token/Net. The NMP accesses and controls the local and remote PCUs on the networks. The communication interface software module is responsible for opening and closing the session between the PC and PCU ports. The NMP supports a set of operations used by a network manager to control and manage the network PCUs. The user uses the NMP to integrate each PCU and check and set its attributes. The NMP was developed to run in the Computer Engineering Research Laboratory and in the University of Arizona broadband cable plant. The NMP allows different PCUs (local or remote) to check and modify PCU's attributes while users work on their own PCUs. (Abstract shortened with permission of author.)

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Guarnera, Gregg. "Token bus local area network simulator." Master's thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-02022010-020058/.

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Ekiz, Huseyin. "Design, implementation, and performance analysis of CAN/CAN and CAN/ethernet bridges." Thesis, University of Sussex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362210.

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Mukhija, Punit. "A Wireless Call Button Network Design." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/9763.

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Traditional call button networks that control elevator systems utilize a wired connection for communication. The communication cables are run through the elevator shaft from one call button to another and finally to the controller on the roof. Installing this wired link is highly time consuming. In this thesis, we propose the design for a wireless call button network. Two important features of this wireless network design are low cost and low power consumption. Controller Area Network (CAN) is a widely used protocol for wired networks and has been proposed for use in next generation elevator control systems. A modified CAN for wireless (MCANW) protocol has been developed for the wireless call button network. The wireless link will be implemented via the use of data radios. A modified form of traditional Binary Phase Shift Keying (BPSK) modulation scheme for the radios is proposed. The proposed modulation scheme, like differential BPSK, can be detected non-coherently but it offers better performance than differential BPSK. Its implementation includes an innovative tracking algorithm to maintain synchronization at the receiver.
Master of Science

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Hill, Kevin Carlos. "Design of a local area network and a wide area network to connect the US Navy's training organization." Master's thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-10242009-020032/.

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Bangalore, Narendranath Rao Amith Kaushal. "Online Message Delay Prediction for Model Predictive Control over Controller Area Network." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78626.

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Today's Cyber-Physical Systems (CPS) are typically distributed over several computing nodes communicating by way of shared buses such as Controller Area Network (CAN). Their control performance gets degraded due to variable delays (jitters) incurred by messages on the shared CAN bus due to contention and network overhead. This work presents a novel online delay prediction approach that predicts the message delay at runtime based on real-time traffic information on CAN. It leverages the proposed method to improve control quality, by compensating for the message delay using the Model Predictive Control (MPC) algorithm in designing the controller. By simulating an automotive Cruise Control system and a DC Motor plant in a CAN environment, it goes on to demonstrate that the delay prediction is accurate, and that the MPC design which takes the message delay into consideration, performs considerably better. It also implements the proposed method on an 8-bit 16MHz ATmega328P microcontroller and measures the execution time overhead. The results clearly indicate that the method is computationally feasible for online usage.
Master of Science

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42

Thompson, Shaun. "Application of controller area network bus and CANopen protocol in Industrial Automation." Thesis, Thompson, Shaun (2018) Application of controller area network bus and CANopen protocol in Industrial Automation. Honours thesis, Murdoch University, 2018. https://researchrepository.murdoch.edu.au/id/eprint/44816/.

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The Controller Area Network Bus was released by Bosch as an innovative and new method of providing prioritised and fault tolerant communication within automotive applications. Since its introduction in 1986 many protocols have been designed to operate above this network structure, utilising the prioritisation properties to their advantage. This thesis will focus on building a custom testbed using existing university equipment and then programming an implementation of the CANopen protocol. The physical network will consist of a Controller Area Network bus as this is supported by a multitude of devices and can act as a method of integrating many devices available within the Murdoch University Industrial Computer Systems Laboratory that previously had no method of direct communication. The newly constructed testbed will be built in the most cost-effective manner possible and rely on integrating currently underutilised hardware available to students with the view of expanding the capabilities of teaching facilities in the Industrial Computer Systems Laboratory. The newly developed set of programs and network will facilitate the teaching of additional material to students by way of a set of manuals that will act to complement existing material already developed for the in-lab hardware.

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Ortwein, Michael T. "Establishing Regis network security policy." [Denver, Colo.] : Regis University, 2005. http://165.236.235.140/lib/MOrtwein2005.pdf.

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Jones, S. T. "Distributed videotex on a local area network." Thesis, University of Essex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376743.

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Elgström, Dennis. "Implementation of secure network solutions for Project Area." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-25010.

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Doss, David L. Rhodes Dent. "Development of a multimedia instructional local area network." Normal, Ill. Illinois State University, 1992. http://wwwlib.umi.com/cr/ilstu/fullcit?p9227165.

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Thesis (Ed. D.)--Illinois State University, 1992.
Title from title page screen, viewed January 11, 2006. Dissertation Committee: Dent M. Rhodes (chair), Raymond A. Davidson, Janet D. Hartman, Bill E. Swafford. Includes bibliographical references (leaves 82-85) and abstract. Also available in print.

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Sullivan, John F. "Network fault tolerance system." Link to electronic thesis, 2000. http://www.wpi.edu/Pubs/ETD/Available/etd-0501100-125656.

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Viens, Francois (Joseph Lucien Francois) Carleton University Dissertation Engineering Electrical. "A neural network approach to detect traffic anomalies in a communication network." Ottawa, 1992.

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49

Rose, Stephen Matthew. "Online training of a neural network controller by improved reinforcement back-propagation." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/19177.

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Averill, Linda. "A Local Area Network Implemented At Everett High School." NSUWorks, 1989. http://nsuworks.nova.edu/gscis_etd/394.

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The loss of library materials as well as of her departmental school materials has been a growing problem at Everett High School for the past several years. In recent years school budget cuts combined with a more mobile and transient student population has increased the awareness of the need for keeping better material accountability through efficient, accurate student obligation records. Decreased budgets, increased student loss of materials, and increased cost of replacement for those materials have focused administration attention on the need for an improved student obligation tracking system. Everett High School covers a four block campus site located in the central area of the city of Everett, Washington, a community of approximately 60,000 citizens. In recent year’s school budget cuts and a more mobile, transient student population has caused this problem to take a higher priority in administration plans and goals. Under the old system when a student withdrew, communication regarding return or replacement of materials broke down among departments. Often times students were expected to hand deliver their own obligation records for appropriate signatures before withdrawing. Under this system Obligation records were inaccurate, incomplete or lost. In several cases, students withdrew and their records transferred before an accurate accounting of their student obligations were recorded. Consequently, existing information that needed to be shared among various staff members was not properly processed in an accurate and timely manner resulting in: A. Library materials not returned. B. Textbooks not returned to teachers. c. Extracurricular equipment not returned (E .g. costumes for drama department). D. Fines for the above materials not collected. Working in cooperation with Everett High administrators and staff, the investigator constructed a timeline of procedures and methods to install an information sharing system that would significantly reduce student materials loss. It was determined that this developmental project would cover a four year period from September, 1987, through June, 1991. From September, 1989, through June, 1991, the system would be fully functioning with constant monitoring and evaluation consistent with established goals and expectations. Because accurate statistics could not be collected for unreturned materials from all Everett High departments, the investigator focused the statistical research on library materials unreturned or unreimbursed by withdrawn students for the period 1987-89, prior to installation of a LAN system. These figures provide the baseline data for the study. The LAN will be operational and the E.H.S. staff trained in its use by August, 1989. The LAN system will be fully functional from 1989-1991 and pertinent library data will be kept for this two year period for purposes of comparison with baseline data. Upon evaluating the various constraints placed on the investigator by administrators regarding time, finances, staff and hardware, the investigator chose to combine hardware already in place at Everett High School with other compatible hardware to establish a new communication system. It was necessary to purchase additional Macintosh microcomputers, Apple printers and one laser printer. Each microcomputer workstation was connected to the VAX through a twisted pair of telephone wires. This forced a star configuration with the VAX as the central server. The result was a local area network (LAN) in place at Everett High School. The benefits to the Everett School District of using a LAN communication system will not be known until the project terminates in June, 1991. If the LAN system is found to be financially beneficial at Everett High the system could be expanded to include other schools in the district as well as the central office.

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Dissertations / Theses on the topic 'Controller Area Network (Computer network)'

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