Dissertations / Theses on the topic 'Turning system'
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Dawson, Ross Hughan. "Kite Turning." Thesis, University of Canterbury. Mechanical Engineering, 2011. http://hdl.handle.net/10092/5475.
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This thesis investigates the mechanisms behind the control of a typical two line kite, where the lines are attached to the kite side by side. This arrangement gives the kite flyer the ability to apply a roll angle to the kite, which then results in a yawing motion. The reason for this yaw rotation has not been adequately described previously.
The definitions of roll and yaw for a kite have been re-defined to match the real world behaviour of the kite-bridle-line system. Specifically, these are defined as rotations relative to the lines rather than the kite itself. This detail has been neglected in previous research, and has a significant effect on the turning behaviour of a kite.
A static model of a kite represented by flat disks was created. This model allows the out of balance forces and moments to be found for a kite when it is held at any position. When the kite is held with a roll angle applied, the disk angles of attack become unequal. This causes a change in the magnitude, direction, and point of action of the aerodynamic forces on each disk, which can lead to a yaw moment. While this does not give a complete picture of how a kite turns, it does explain one of the two mechanisms that cause a kite to begin to yaw when a roll angle is applied. The other mechanism is due to the velocity of the roll rotation, and is out of the scope of this thesis since a dynamic analysis would be required.
The static model showed that any variation to kite geometry or any parameter that affects the equilibrium position of the kite will affect turning response. The most important of these parameters for a simple kite represented by two disks is the dihedral angle. A minimum negative dihedral angle (or anhedral) is required for a kite to turn in the expected direction when a roll angle is applied. The value of the minimum anhedral angle required for this behaviour varies with other parameters, but is generally between 8° and 20°.
Other parameters such as bridle geometry also affect the turning response of a kite, primarily because they alter the equilibrium positions of the kite and line. Altering these equilibrium positions has a strong effect on turning response, since it changes the initial disk angles of attack. Additionally, if the kite and line are not aligned perpendicular to each other (which is a rare condition for a kite) a roll angle further changes the disk angles of attack, since the roll angle is applied about an axis relative to the line rather than the kite.
An investigation into the effect of varying wind velocity on turning response showed that it has an important effect. Some kites will reverse their response to a given roll angle at some wind velocities, which could make the kite very difficult to control. Additionally, some kites can alter their equilibrium positions sharply with wind velocity, again causing varying turning behaviour as the wind conditions change.
Future work should examine the dynamic turning response of kites. A dynamic simulation could be used to examine how the turning response of a kite is influenced by the rate at which a control input is applied. Additionally, the behaviour of the kite once the initial turning movement has begun could be assessed.
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Chen, Shenjian. "Contribution to a technologically oriented turning system." Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334441.
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Chen, Chia-Chi (Chia-Chi Jacky). "Improving energy efficiency : (turning wasted heat into cash flow)." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/105306.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, Engineering Systems Division, 2015.Cataloged from PDF version of thesis.
Includes bibliographical references (page 62).
The following gaps in critical goals are derived through a direct comparison of the Needs to Goals transformation versus the current waste heat recovery solutions and their stated goals. 1. Critical: Implementation of a sustainable financial plan which can help to initiate an increase in waste heat recovery 2. Critical: Deployment of waste heat recovery strategies for reducing greenhouse emissions A proposed solution to achieve these two goals would be: 1. Purchasing waste heat from industries. 2. Storing this energy with our proprietary thermal storage materials. 3. Selling the stored energy at either industrial sites or to pricier markets. New thermal-storage materials and a mini-sized combined heat and power (CHP) system have been further developed. This system will be the first to involve the arbitrage of waste heat energy by using cheap thermal storage material (made with zero greenhouse emissions) and a mini generator. This system could play an important role in providing economic incentives for industries that wish to recover waste heat.
by Chia-Chi (Jacky) Chen.
S.M. in Engineering and Management
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Zhang, Songling. "Development and Testing of An Application System for Intersection Data Collection and Analysis." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1513262599088906.
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Mao, Jialei. "Automatic system to measure turning movement and intersection delay." Akron, OH : University of Akron, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1239638295.
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Thesis (M.S.)--University of Akron, Dept. of Civil Engineering, 2009."May, 2009." Title from electronic thesis title page (viewed 8/2/2009) Advisor, Ping Yi; Committee members, William H. Schneider IV, Anil Patnaik; Department Chair, Wieslaw K. Binienda; Dean of the College, George K. Haritos; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.
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Mao, Jialei. "Automatic System to Measure Turning Movements and Intersection Delay." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1239638295.
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Alajmi, Mahdi. "Neural-optimizer system for tool wear prediction in turning process." Thesis, Brunel University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415137.
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Arsecularatne, Joseph Alexander. "A process monitoring system to optimize cutting conditions in turning." Thesis, University of Manchester, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303763.
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Xu, Runsong. "Volute and diffuser performance analysis for high turning turbine system." Master's thesis, Mississippi State : Mississippi State University, 2002. http://library.msstate.edu/etd/show.asp?etd=etd-07122002-134859.
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Deng, Yuwen. "Animated vehicle turning path simulation system on an Internet/Intranet browser." CSUSB ScholarWorks, 2002. https://scholarworks.lib.csusb.edu/etd-project/2091.
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The animated vehicle turning path simulation system on Internet/Intranet web browser presented in this project is intended to provide civil engineers with an easy-to-use, all functional simulation system that could help them with highway and street design.
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Feng, Dehua. "Determining Intersection Turning Movements with Detection Errors." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1512746695445707.
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Olli, Oscar. "Big Data in Small Tunnels : Turning Alarms Into Intelligence." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-292946.
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In this thesis we examine methods for evaluating a traffic alarm system. Nuisance alarms can quickly increase the volume of alarms experienced by the alarm operator and obstruct their work. We propose two methods for removing a number of these nuisance alarms, so that events of higher priority can be targeted. A parallel correlation analysis demonstrated significant correlation between single and clusters of alarms, presenting a strong cause for causality. While a serial correlation was performed, it could not conclude evidence of consequential alarms. In order to assist Trafikverket with maintenance scheduling, a long short-term model (LSTM) model, to predict univariate time-series of discretely binned alarm sequences. Experiments conclude that the LSTM model provides higher precision for alarm sequences with higher repeatability and recurring patterns. For other, randomly occurring alarms, the model performs unsatisfactory.Den här examensuppsatsen granskar olika metoder för att utvärdera ett larmsystem med inriktning mot trafiksäkerhet. Störande larm kan skapa stora mängder larm som försvårar arbetet för larmoperatörer. Vi föreslår två metoder för att avlägsna störande larm, så att uppmärksamhet kan riktas mot varningar med högre prioritet. En parallell korrelationsanalys som demonstrerade hög korrelation mellan både enskilda och kluster av larm. Detta presenterar ett starkt orsakssamband. En korskorrelation utfördes även, men denna kunde inte fastställa existens av s.k. följdlarm. För att assistera Trafikverket med schemaläggning av underhåll har en long short-term memory (LSTM) modell implementerats för att förutspå univariata tidsserier av diskretiserade larmsekvenser. Utförda experiment sammanfattar att LSTM modellen presterar bättre för larmsekvenser med återkommande mönster. För mera slumpmässigt genererade larmsekvenser, presterar modellen med lägre precision.
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Sullivan, John B. "The application of an artificial neural network to a turning movement detector system." Ohio : Ohio University, 1991. http://www.ohiolink.edu/etd/view.cgi?ohiou1183987292.
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Revere, Kelvin Mark. "A distributed decision support system for turning and milling operations using the internet." Thesis, Durham University, 2000. http://etheses.dur.ac.uk/4619/.
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The machine tool industry is highly dependent on the tooling which is needed to machine the components used to make the range of products seen in today's society. The range of tooling available to machinists is prolific and subject to continual growth. Those engineers faced with the task of process planning require advanced systems to support the decisions that need to be made for the production process to operate smoothly. The tooling data made available by these systems is a key factor in defining the efficiency with which the production processes can be carried out. This research examines the technical decision support systems made available to industrialists and highlights the scope to provide tooling engineers with up-to-date tooling performance and use data that can be used both in the planning stages as well as dealing with problems encountered during production. Specifically, this research identifies the role performed by widespread tool trials, associated with new tools or new materials, and goes on to show how the information obtained from tool trials can be collated in a structured manner and used to enhance the provision of data with which to carry out the process planning task. The goal of this research was to develop and implement a framework capable of collecting and disseminating data related to tool trials in a coherent and supportive fashion using distributed methods. This target resulted in the deployment of a system named JadeT, which is capable of receiving and analysing data from tool trials and subsequently enhancing the process planning task by basing cutting parameter selection on a combination of fundamental cutting parameter algorithms in parallel with using the approved data generated from tool trials. The JadeT system was tested via the creation of a database using actual tool trial reports, and the manner in which this data was used to provide cutting parameters was analysed. The JadeT system has been developed, deployed and evaluated. The opportunity to use data contained within tool trial reports to support process planning tasks has been identified and exploited. The testing of JadeT indicates that the system fulfils the initial goals and was able to provide suggestions for further research in this area.
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Sasaki, Shinji. "A bifurcation phenomenon of Stokes curves around a double turning point, and influence of virtual turning points upon the transition probabilities for three-level systems." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/215284.
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Chen, Ben-Ren. "Musculo-skeletal dynamics and multiprocessor control of a biped model in a turning maneuver /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487259125219255.
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Hernandez, Manuel. "Process Optimization Towards the Development of an Automated CNC Monitoring System for a Simultaneous Turning and Boring Operation." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5298.
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Manufacturing operations generate revenue by adding value to material through machine work and the cost associated with part production hinders the maximum profit available. In order to remain competitive, companies invest in research to maximize profit and reduce waste of manufacturing operations. This results in cheaper products for the customer without sacrificing quality. The purpose of this research was to identify machine settings of an Okuma LC 40 Turning Center and optimize the cost of machining in terms of tool cost and energy consumption while maintaining part quality at a productive cycle time. Studying the relationship between energy consumption, tool life, and cycle time with the speed and feed settings through statistical Analysis of Variance (ANOVA) method will allow the production plant to make profitable financial decisions concerning simultaneous turning operation of forged chrome-alloy steel. The project was divided into three phases; the first phase began with a literature survey of sensors used in current manufacturing research and the adaptation of our sensors to the Okuma LC 40 turning center. Then, phase II used design of experiments to identify spindle speed and feedrate settings that optimize multiple responses related to the turning process. The result was a saving in energy consumption (kWh) by 11.8%, a saving in cutting time by 13.2% for a total cost reduction from $1.15 per tool pass to $1.075 per tool pass. Furthermore, this work provides the foundation for phase III to develop an intelligent monitoring system to provide real-time information about the state of the machine and tool. For a monitoring system to be implemented in production, it should utilize cost effective sensors and be nonintrusive to the cutting operation.ID: 031001516; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Title from PDF title page (viewed August 16, 2013).; Thesis (M.S.M.E.)--University of Central Florida, 2012.; Includes bibliographical references (p. 58-60).
M.S.M.E.
Masters
Mechanical and Aerospace Engineering
Engineering and Computer Science
Mechanical Engineering; Mechanical Systems
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Hirose, Sampei. "On a WKB theoretic transformation for a completely integrable system near a degenerate point where two turning points coalesce." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/175098.
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Leung, Nelson K. Y. "Turning user into first level support in help desk development of a web-based user self-help knowledge management system /." Access electronically, 2006. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060720.103131/index.html.
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Kinc, Jiří. "Využití vysokotlakého chlazení na dlouhotočných automatech." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231129.
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The thesis describe high-pressure cooling system and present experiment, when is using this cooling technology for turning cylindrical workpiece to long-turn machines. Workpiece manufactured using high-pressure cooling system is compares with Workpiece manufactured using low-pressure cooling system. Results are analyzed, evaluated and plotted in a single graphical relationships. The thesis is completed the analysis, discussion and recommendations regarding the using of high-pressure cooling.
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Papadakis, Ktistakis Iosif. "An Autonomous Intelligent Robotic Wheelchair to Assist People in Need: Standing-up, Turning-around and Sitting-down." Wright State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1546469803313219.
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Anderson, Whitney Allison. "“You’re Not Part of the Family”: Understanding the Turning Points and Family System Consequences of High Conflict Mother-/Daughter-in-Law Relationships." Diss., North Dakota State University, 2016. http://hdl.handle.net/10365/25667.
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Popular culture representations of in-law relationships are frequently negative, and research has affirmed the communication difficulties associated with these non-kin, nonvoluntary relationships. Mother-in-law/daughter-in-law (MIL/DIL) relationships face unique challenges, as these women compete for the position of “kinkeeper,” or the person who manages relationships throughout the family. When MIL/DIL relationships are characterized by conflict and negative feelings toward one another, the family system suffers. To better understand the implications of “high conflict” MIL/DIL relationships on entire families, 27 DILs were interviewed about the turning points they had experienced with their MILs and the repercussions of the MIL/DIL relationship throughout the family system. Nine turning point categories emerged inductively from the data, along with several consequences for relationships throughout the family system, including DIL/husband, MIL/grandchildren, and husband/mother. Findings indicate high conflict MIL/DIL relationships do not just lead to negative outcomes for the two women involved, but also for other members across the family system.
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Slavík, Daniel. "Možnosti systému Sinumerik při programování rotační strojní součásti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231372.
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This diploma thesis deals with a manufacture of rotating mechanical component on CNC lathe machine with Sinumerik control system. At first the chosen component is briefly described and then NC program is created in Sinutrain Operate 4.5 system. Afterwards the program is verified by simulation. Within the diploma thesis a technological documentation is elaborated that contains a new technological course of manufacture and a manufacture drawing of the component. The final part of this thesis is focused on technical-economic evaluation of newly designed manufacture with verification of cutting conditions and required output of the CNC machine. The outcome of the thesis defines an hour rate of CNC lathe and price of component that regards to newly presented manufacture.
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Anderson, Whitney Allison. "?You?re Not Part of the Family?: Understanding the Turning Points and Family System Consequences of High Conflict Mother-/Daughter-in-Law Relationships." Diss., North Dakota State University, 2016. http://hdl.handle.net/10365/25667.
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Popular culture representations of in-law relationships are frequently negative, and research has affirmed the communication difficulties associated with these non-kin, nonvoluntary relationships. Mother-in-law/daughter-in-law (MIL/DIL) relationships face unique challenges, as these women compete for the position of ?kinkeeper,? or the person who manages relationships throughout the family. When MIL/DIL relationships are characterized by conflict and negative feelings toward one another, the family system suffers. To better understand the implications of ?high conflict? MIL/DIL relationships on entire families, 27 DILs were interviewed about the turning points they had experienced with their MILs and the repercussions of the MIL/DIL relationship throughout the family system. Nine turning point categories emerged inductively from the data, along with several consequences for relationships throughout the family system, including DIL/husband, MIL/grandchildren, and husband/mother. Findings indicate high conflict MIL/DIL relationships do not just lead to negative outcomes for the two women involved, but also for other members across the family system.
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Мотринець, Наталія Михайлівна, and Natalia Motrynec. "Дослідження характеристик продуктивності та якості токарної обробки на основі керування поточним станом динаміки системи." Master's thesis, ТНТУ ім. І. Пулюя, 2018. http://elartu.tntu.edu.ua/handle/lib/27332.
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Роботу виконано на кафедрі конструювання верстатів, інструментів та машин Тернопільського національного технічного університету імені Івана Пулюя Міністерства освіти і науки України
Захист відбудеться 27 грудня 2018 р. о 13.00 годині на засіданні екзаменаційної комісії №10 у Тернопільському національному технічному університеті імені Івана Пулюя за адресою: 46001, м. Тернопіль, вул. Руська, 56, навчальний корпус №4, ауд. 101У дипломній роботі проведено аналіз результатів теоретичних і експериментальних досліджень процесу токарної обробки з можливістю керування динамікою системи. Запропоновано методику для дослідження коливань інструменту та шпинделя під час токарної обробки. Розроблено способи зменшення амплітуд коливань робочих органів токарного верстата під час обробки, а також на базі токарного верстата з ЧПК розроблено експериментальний стенд, оснащений модулятором та первинними датчиками обертів шпинделя, для дослідження впливу власних частот і форм коливань частин верстату на шорсткість поверхні деталі
In the thesis the analysis of the results of theoretical and experimental studies of the turning process with the ability to control the dynamics of the system is carried out. The technique for studying the oscillation of the tool and the spindle during turning process is proposed. The methods of reducing the amplitudes of oscillations of the working parts of the lathes during the milling process, as well as on the basis of the CNC turning center, have developed an experimental stand equipped with a modulator and primary spindle speed sensors to study the influence of the eigen frequencies and forms of oscillation of the machine tool on the roughness of the surface of the part.
Вступ. Загальний розділ. Оптимізація схем формоутворення. Вибір і обґрунтування вихідних даних на розробку проекту верстатного обладнання. Проектування конструкції верстатного обладнання. Конструювання та розрахунок окремих вузлів верстата. Науково-дослідна частина. Організаційно економічна частина. Спеціальна частина САПР. Охорона праці та безпека в надзвичайних ситуаціях. Екологія. Висновки. Перелік посилань.
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Frangoudis, Constantinos. "Controlling the dynamic characteristics of machining systems through consciously designed joint interfaces." Licentiate thesis, KTH, Maskin- och processteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-146306.
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The precision of machining systems is ever increasing in order to keep up with components’ accuracy requirements. At the same time product variants areincreasing and order quantities are decreasing, which introduces high demands on the capability of machining systems. The machining system is an interaction between the machine tool structure, the process and the control system and is defined in terms of capability by the positional, static, dynamic and thermal accuracy. So far, the control of the machining system, in terms of static and dynamic stability is process based which is often translated into sub-optimum process parameters and therefore low productivity.This thesis proposes a new approach for control of the machining systemwhich is based on the capability to control the structural properties of themachine tool and as a result, controlling the outcome of the machining process.The control of the structural properties is realized by carefully designed Joint Interface Modules (JIMS). These modules allow for control of the stiffness and damping of the structure, as a result of tuning the contact conditions on the interface of the JIM; this is performed by control of the pre-load on the interface,by treatment of the interface with damping enhancing materials, or both. The thesis consists of a presentation of the motivation behind this work, the theoretical basis on which the proposed concept is based and a part describing the experimental investigations carried out. Two prototype JIMs, one for a milling process and one for a turning process were used in the experimental investigations that constitute the case studies for examining the validity of the proposed concept and demonstrating its applicability in a real production environment.QC 20140611
EU FP7 POPJIM
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Merzová, Linda. "Lewisův bod obratu jako hrozba pro čínskou ekonomiku?" Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-264513.
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The diplomma thesis deals with the Lewis turning point and its impact on the Chinese economy. The work is divided into three main chapters. The first chapter explains the basic concept ,,Lewis turning point" and its position in the global context. Besides W. A. Lewis is also mentioned in a number of other authors dealing with growth theories. Here it is primarily determined whether China has reached the Lewis turning point, which is the impact of this point on the Chinese economy, the labor market and what follows the development of the Chinese economy after reaching this point. The third part is found a connection between Lewis turning point and university/higher education. Part of this chapter are the specifics, trends and especially the problems of the university system in China. The conclusion of this chapter is devoted to a turning point, and its impact on education.
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Ващенок, Ярослав Олегович. "Електропривод повороту блоку сонячних панелей великої потужності." Master's thesis, КПІ ім. Ігоря Сікорського, 2020. https://ela.kpi.ua/handle/123456789/39346.
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Дисертаційна робота складається зі вступу, восьми розділів, загальних висновків, переліку використаних джерел і додатків. Загальний обсяг дисертації становить 132 сторінок, у тому числі 114 сторінок основного тексту, 54 рисунків, 36 таблиці, перелік використаних джерел (31 найменування), графічна частина на 7 листах А1.
Метою магістерської дисертації є розробка системи повороту блоку сонячних панелей, системи керування установкою та людино-машинного інтерфейсу.
В роботі проведено аналітичний огляд існуючих систем повороту блоку сонячних панелей та їх типів, розглянуто типи сонячних електростанцій за схемою живлення, проведено аналіз доцільності використання системи повороту сонячних панелей, розраховано оптимальний кут відхилення сонячних фотомодулів від сонячних променів.
Виконано розрахунок потужності та вибір електродвигуна, обрано основні елементи системи, такі як: частотний перетворювач, програмно-логічний контролер, людино-машинний інтерфейс. Розроблено систему керування повороту, реалізовано відстеження положення Сонця за допомогою датчику та інтерфейс взаємодії людини з системою.The Master’s dissertation consists of an introduction, eight sections, general conclusions, a list of used sources and appendices. The total volume of the dissertation is 132 pages, including 114 pages of the main text, 54 figures, 36 tables, the list of the used sources (31 names), a graphic part on 7 sheets of A1. The aim of the master's dissertation is to develop of solar panel rotating system due to installation control system and a human-machine interface. In the work was carried out the analyses of the existing systems of rotation of solar panels and their types, considered the types of solar power plants according to the power scheme, analysed the feasibility of using the system of rotation of solar panels, calculated the optimal angle of deviation of solar modules from sunlight.. The power calculation and selection of type of electric drive were made, the main elements of the system are selected, such as: frequency converter, software-logic controller, human-machine interface. System control of turn is developed, lag of position of the sun by means of the sensor and the interface of interaction of the person with system is realized.
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Wang, Zhanchen. "Chatter analysis of machine tool systems in turning processes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ63715.pdf.
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Zhang, Pan. "Tool flow management in batch manufacturing systems for cylindrical components." Thesis, Loughborough University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307912.
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Mognol, Pascal. "Contribution à la génération automatique de gammes en tournage : génération dirigée par évaluation progressive." Cachan, Ecole normale supérieure, 1994. http://www.theses.fr/1994DENS0019.
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Ce travail de recherche porte sur la génération automatique de gammes d'usinage en tournage. La complexité de ces recherches porte principalement sur deux points: il faut, d'une part, formaliser la connaissance de l'expert en gammes d'usinage (connaissance basée sur des calculs scientifiques mais aussi principalement sur l'expérience) et d'autre part, utiliser cette connaissance au mieux pour obtenir un système de génération automatique de gammes d'usinage (expertise cogniticienne). Il faut mettre en œuvre une méthode qui évite l'explosion combinatoire du nombre de solutions possibles, tout en ne réduisant pas l'espace des solutions envisagées. Pour répondre a ces exigences, nous avons mis en place un nouveau concept base sur la construction d'un graphe de résolution. Ce principe est du type ascendant. L'étude de la pièce finie permet, par habillages successifs, d'obtenir la forme brute. Des critères technologiques, qui traduisent l'expertise du gammiste, évaluent et éliminent progressivement les solutions peu fiables, tout en ne réduisant pas l'espace des solutions valides. De plus, l'analyse des critères défaillants permet de diriger l'élaboration du graphe vers des solutions répondant aux problèmes décelés. Le principe même d'élaboration du graphe garantit la non explosion combinatoire du nombre de solutions. Le graphe finalement obtenu, ne contient qu'un nombre restreint de gammes technologiquement faisables, sur lesquelles une étude finale et complète (étude de cout, par exemple) est menée. L'utilisateur peut ainsi choisir, en toutes connaissances de cause, la gamme qu'il va mettre en œuvre. Une maquette informatique a été réalisée. Les résultats obtenus ont permis de valider ces concepts dans le cadre du tournage
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Horák, Vítězslav. "Konstrukce frézovací hlavy pro CNC soustruh s nastavitelným sklonem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417456.
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This thesis deals with design of CNC lathe milling head with B axis. Thesis includes research in CNC turning machines, their tool systems and overview of manufacturers of milling B axis. It also includes calculation of machining forces, design of spindle and design of B axis including necessary calculations. Part of this thesis is also 3D model and assembly drawing, 2 manufacturing drawings and list of items.
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Cardi, Adam A. "On the development of a dynamic cutting force model with application to regenerative chatter in turning." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28152.
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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.Committee Co-Chair: Bement, Matt; Committee Co-Chair: Liang, Steven; Committee Member: Griffin, Paul; Committee Member: Mayor, Rhett; Committee Member: Melkote, Shreyes; Committee Member: Zhou, Chen.
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Caccialupi, Alessandro. "Systems development for high temperature, high strain rate material testing of hard steels for plasticity behavior modeling." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180051/unrestricted/caccialupi%5Falessandro%5F200312%5Fms.pdf.
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Hoffman, Eric. "On minimum time six-degree-of-freedom turning maneuvers for a high-alpha fighter aircraft." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/12449.
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Nightingale, Naomi. "African American Men Who Give Voice to the Personal Transition from Criminality to Desistance." Antioch University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1393458816.
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Al-Azmi, Abdulrahman F. "The design of an effective sensor fusion model for condition monitoring systems of turning processes." Thesis, Nottingham Trent University, 2008. http://irep.ntu.ac.uk/id/eprint/319/.
Full textAbstract:
High energy price and the increasing requirements of quality and low cost of products have created an urgent need to implement new technologies in current automated manufacturing environments. Condition monitoring systems of manufacturing processes have been recognised in recent years as one of the essential technologies that provide the competitive advantage in many manufacturing environments. This research aims to develop an effective sensor fusion model for turning processes for the detection of tool wear. Multi-sensors combined with a novelty detection algorithm and Learning Vector Quantisation (LVQ) neural networks are used in this research to detect tool wear and provide diagnostic and prognostic information. A novel approach, termed ASPST, (Automated Sensor and Signal Processing Selection System for Turning) is used to select the most appropriate sensors and signal processing methods. The aim is to reduce the number of sensors needed in the overall system and reduce the cost. The ASPST approach is based on simplifying complex sensory signals into a group of Sensory Characteristic Features (SCFs) and evaluating the sensitivity of these SCFs in detecting tool wear. A wide range of sensory signals (cutting forces, strain, acceleration, acoustic emission and sound) and signal processing methods are also implemented to verify the capability of the approach. A cost reduction method is also implemented based on eliminating the least utilised sensor in an attempt to reduce the overall cost of the system without sacrificing the capability of the condition monitoring system. The experimental results prove that the suggested approach provides a responsive and effective solution in monitoring tool wear in turning with reduced time and cost.
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Newkirk, Brian J. "Turning quicksand into bedrock : understanding the dynamic effects of disease-focused global health aid on health systems." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/54594.
Full textAbstract:
Thesis (S.M.)--Harvard-MIT Division of Health Sciences and Technology, 2009.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 82-88).
This thesis asks one basic question: how do "vertical" disease- or intervention-focused global health programs impact the underlying health systems of the nations they serve? Vertical programs-health aid focused on a particular disease, such as HIV, or type of intervention, such as immunization-receive the lion's share of global health aid dollars, and yet we know uncomfortably little about their long-run impact on broader health systems. Many speculate that vertical aid undermines health worker effectiveness, distorts national policies, and disrupts the supply chain for drugs and medical products. Unfortunately, a lack of hard data makes quantitative analysis extremely difficult. Using the tools of system dynamics, this thesis consolidates the collective wisdom of previously published investigations and anecdotal observations to reveal the field's prevailing "mental model" of the dynamic in question. The result is a set of diagrams that describe the known impacts of vertical programs on health systems, and also reveal dynamic effects not yet explicitly identified in the literature. These effects fall into four sub-systems of impact: care delivery specialization and fragmentation, care delivery development and mediocritization, health policy development and mismatch, and market development and distortion. These models are then used to better understand the effects of recent contextual developments-the HIV/AIDS epidemic and the emergence of large Global Health Initiatives.
(cont.) Through expert interviews, this thesis identifies the most pressing system stresses in this contemporary context: the commitment to chronic care delivery which HIV/AIDS intervention creates, and the critical need for harmonization between donors which this commitment reveals. Using case examples from Kenya, these dynamics are shown to be active today, and to have instigated mitigation strategies by practitioners in the field. Finally, the systems identified above bring into focus key leverage points, including donor coordination, health worker augmentation, and engagement of local markets, which can "tip" the impact of vertical programs from harming health systems to strengthening them. In doing so, this thesis provides guidance to policymakers and program implementers who seek to use their resources to strengthen systems and eventually obviate health aid entirely.
by Brian J. Newkirk.
S.M.
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Biester, Lars. "Cooperative automation in automobiles." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2009. http://dx.doi.org/10.18452/15935.
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Das Ziel dieser Dissertation ist die systematische Entwicklung eines weiterführenden Konzeptes zur Fahrer-Fahrzeug Kooperation, dessen Tauglichkeit anhand empirischer Daten evaluiert und im Hinblick auf sein belegbares Potential in Bezug auf bestehende Ansätze bewertet werden soll.Da Annahmen und Prämissen der Mensch-Maschine-Interaktion den Ausgangspunkt bilden, beginnt die dezidierte Auseinandersetzung und begriffliche Differenzierung von Kooperation in eben diesem Kontext und führt folgerichtig zu einer definitorischen Abgrenzung gegenüber existierenden Ansätzen, der Forderung eines spezifischen Rollenverständnisses zur Interaktion sowie der Ableitung konzeptueller Grundbedingungen. Anschließend werden die strukturellen und prozeduralen Merkmale dieser spezifischen Interaktion herausgearbeitet und dazu benutzt, die generellen Attribute von Kooperation zwischen Fahrer und Fahrzeug zu identifizieren. Dafür wurden nachfolgend solche Indikatoren abgeleitet, vermittels derer der unterstellte Gewinn infolge der Kooperation von Fahrer und Fahrzeug kontrolliert und bewertet werden kann.Im Rahmen mehrerer Voruntersuchungen wurden Fahrsituationen identifiziert, die am meisten von einer kooperativen Interaktion zwischen Fahrer und Fahrzeug profitieren würden. Im Ergebnis wurden für die zwei Hauptuntersuchungen das „Überholen auf der Autobahn“ und das „Linksabbiegen auf innerstädtischen Straßen und Landstraßen mit Gegenverkehr“ als Fahrszenarien ausgewählt, die in jeweils einem eigenständigen Experiment mit alternativen Systemvarianten verglichen worden sind. Die Prüfung spezifischer Hypothesen wurde dabei in die prototypische Umgebung eines Fahrsimulators eingebettet. Abschließend werden in dieser Arbeit die Möglichkeiten zur Etablierung und Einbettung dieses Interaktionskonzeptes in den übergreifenden sozio-technischen Kontext aufgezeigt und zukünftige Perspektiven diskutiert.The aim of this dissertation is to systematically develop a continuative concept of driver-automobile cooperation, to evaluate its suitability on the basis of empirical data, and to value its provable potential in relation to existing approaches.Assumptions and premises regarding the human-machine interaction constitute the starting point of this work. The decisive altercation and notional differentiation of cooperation are explained in just this context, leading logically to a definitional demarcation of existing approaches, the demand of a specific role understanding of the interaction as well as the derivation of conceptual basic conditions. The structural and procedural characteristics of this specific interaction are then elaborated upon and used to identify the general attributes of cooperation between driver and automobile. In the following, such indicators are derived by which the implied profit as a result of cooperation between driver and automobile can be controlled and valued. Within the framework of several preliminary investigations, those driving situations were identified that would profit most from a cooperative interaction between driver and automobile. As a result, the two driving scenarios "Overtaking on Highways" and "Turning Left on Urban and Country Roads with Oncoming Traffic" were utilized in the experiments. Both single scenarios have been compared in independent experiments with regard to alternative system variants. The prove of specific hypotheses was embedded in the prototypical surroundings of a driving simulator. Finally, the possibility of establishing and embedding this interaction concept into the overall socio-technical context will be presented, and future perspectives will be discussed.
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Křepela, Jan. "Dynamické vlastnosti osy C pro multifunkční soustružnické centrum." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-233982.
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his Disertation thesis involves the creating of the simulation model of the C axis drive over mentioned machine and them verification on the prototype of this machine. C axis is controlled with position feedback. Simulation model was created before the realisation of the machine prototype for the preliminary identification of the dynamic behaviours in the working cycles and them opportunity of the realisation this conception. C axis is constructed with worm gear and is controlled with help of Master-Slave drive. This torque drive eliminates the production backlash in the worm gear. The multifunction turning center, where is used this C axis, is determinate for heavy duty roughing cutting of the forged peaces, where is problem with dynamic stability of the cutting process. Simulation model includes the problems with multi-body mass system, friction on the worm gear, self locking, damping on the worm gear and the optimization of the parametrs for many regulators. Simulation model was verified on the prototype of the machine. Achieved results bring the new knowledge, which are used for simulation complicated machine nodes and this knowledge is used for research and developing of the similar mechatronics system.
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Лозовий, С. В. "Проєкт легкового автомобіля з дослідженням технологічного процесу відновлення шарніра рівних кутових швидкостей, відновлення розподільчого валу /комплексний проект/." Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/25318.
Full textAbstract:
Лозовий, С. В. Проєкт легкового автомобіля з дослідженням технологічного процесу відновлення шарніра рівних кутових швидкостей, відновлення розподільчого валу/комплексний проект/ : випускна кваліфікаційна робота : 274 "Автомобільний транспорт" / С. В. Лозовий ; керівник роботи В. І. Кальченко ; НУ "Чернігівська політехніка", кафедра автомобільного транспорту та галузевого машинобудування. – Чернігів, 2021. – 149 с.В моїй роботі магістра, було проведено порівняння та характеристика схожих за конструкцію автомобілів, вибрано авто-прототип ЗАЗ 1103 (Славута), виконано розрахунок потужності двигуна, вантажопідйомність автомобіля, передаточні числа КПП на 5 передачах та задня. Визначено параметри двигуна автомобіля, теплові характеристики, навантаження на КШМ. Розраховані параметри руху рівномірного та нерівномірного, паливна економічність. Розрахована гальмівна система, гальмівний привід, гальмівний шлях, зроблено модернізація елементів гальмування. Після виконано процес дослідження технологій відновлення шарніра рівних кутових швидкостей за з дефектами, у відповідності до завдання. Для виконання розрахунків та графічної частини використовувались такі спеціальні програми як: “Mathcad”, “Компас 3D”, “Paint”.
In my master's thesis, a comparison and characterization of similar cars was made, a car prototype ZAZ 1103 (Slavuta) was selected, engine power was calculated, the car's load capacity, gear ratios in 5 gears plus rear. The parameters of the car engine, thermal characteristics, load on KShM are defined. Calculated parameters of uniform and non-uniform motion, fuel economy. The brake system, brake drive, brake path are calculated, modernization of braking elements is made. After the process of research of technologies of restoration of the hinge of equal angular velocities on with defects, according to the task is executed. Special programs such as “Mathcad”, “Compass 3D”, “Paint” were used to perform calculations and graphics.
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Maddah, Sumayya Suzy. "Formal reduction of differential systems : Singularly-perturbed linear differential systems and completely integrable Pfaffian systems with normal crossings." Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0065/document.
Full textAbstract:
Dans cette thèse, nous nous sommes intéressés à l'analyse locale de systèmes différentiels linéaires singulièrement perturbés et de systèmes de Pfaff complètement intégrables et multivariés à croisements normaux. De tels systèmes ont une vaste littérature et se retrouvent dans de nombreuses applications. Cependant, leur résolution symbolique est toujours à l'étude. Nos approches reposent sur l'état de l'art de la réduction formelle des systèmes linéaires singuliers d'équations différentielles ordinaires univariées (ODS). Dans le cas des systèmes différentiels linéaires singulièrement perturbés, les complications surviennent essentiellement à cause du phénomène des points tournants. Nous généralisons les notions et les algorithmes introduits pour le traitement des ODS afin de construire des solutions formelles. Les algorithmes sous-jacents sont également autonomes (par exemple la réduction de rang, la classification de la singularité, le calcul de l'indice de restriction). Dans le cas des systèmes de Pfaff, les complications proviennent de l'interdépendance des multiples sous-systèmes et de leur nature multivariée. Néanmoins, nous montrons que les invariants formels de ces systèmes peuvent être récupérés à partir d'un ODS associé, ce qui limite donc le calcul à des corps univariés. De plus, nous donnons un algorithme de réduction de rang et nous discutons des obstacles rencontrés. Outre ces deux systèmes, nous parlons des singularités apparentes des systèmes différentiels univariés dont les coefficients sont des fonctions rationnelles et du problème des valeurs propres perturbées. Les techniques développées au sein de cette thèse facilitent les généralisations d'autres algorithmes disponibles pour les systèmes différentiels univariés aux cas des systèmes bivariés ou multivariés, et aussi aux systèmes d''equations fonctionnellesIn this thesis, we are interested in the local analysis of singularly-perturbed linear differential systems and completely integrable Pfaffian systems in several variables. Such systems have a vast literature and arise profoundly in applications. However, their symbolic resolution is still open to investigation. Our approaches rely on the state of art of formal reduction of singular linear systems of ordinary differential equations (ODS) over univariate fields. In the case of singularly-perturbed linear differential systems, the complications arise mainly from the phenomenon of turning points. We extend notions introduced for the treatment of ODS to such systems and generalize corresponding algorithms to construct formal solutions in a neighborhood of a singularity. The underlying components of the formal reduction proposed are stand-alone algorithms as well and serve different purposes (e.g. rank reduction, classification of singularities, computing restraining index). In the case of Pfaffian systems, the complications arise from the interdependence of the multiple components which constitute the former and the multivariate nature of the field within which reduction occurs. However, we show that the formal invariants of such systems can be retrieved from an associated ODS, which limits computations to univariate fields. Furthermore, we complement our work with a rank reduction algorithm and discuss the obstacles encountered. The techniques developed herein paves the way for further generalizations of algorithms available for univariate differential systems to bivariate and multivariate ones, for different types of systems of functional equations
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Райський, Д. М. "Проєкт легкового автомобіля з дослідженям технологічного процесу відновлення шарніра рівних кутових швидкостей, відновлення розподільчого валу." Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/25317.
Full textAbstract:
Райський, Д. М. Проєкт легкового автомобіля з дослідженям технологічного процесу відновлення шарніра рівних кутових швидкостей, відновлення розподільчого валу : випускна кваліфікаційна робота : 274 "Автомобільний транспорт" / Д. М. Райський ; керівник роботи В. І. Кальченко ; НУ "Чернігівська політехніка", кафедра автомобільного транспорту та галузевого машинобудування. – Чернігів, 2021. – 153 с.В ході написання роботи магістра, було проведено аналіз схожих за конструкцію автомобілі, вибрав прототип ГАЗ 3110, виконав розрахунок потужності двигуна, вирахував передаточні числа коробки перемикання. Виконав тепловий розрахунок двигуна й креслення до нього з графіками. Визначив показники динамічності руху автомобіля при рівномірному та не рівномірному завантаженні. Розрахував витрату палива автомобіля на сто кілометрів шляху. В подальшій частині розрахував параметри гальмівної системи барабанного типу, виконав модернізацію системи та розрахував дискові гальма. Також одним із завдань було відновлення розподільчого валу, в укому я вибрав способи відновлення деталі, підібрав обладнання, розрахував припуски та час на обробку кожного з дефектів. Для виконання розрахунків та графічної частини використовувались такі спеціальні програми як: “Mathcad”, “Компас 3D”, “Paint”.
In the course of writing the master's thesis, an analysis of similar cars was made, he chose a prototype GAZ 3110, calculated the engine power, calculated the gear ratios of the gearbox. Performed thermal calculation of the engine and drawings to it with graphs. Determined the dynamics of the car with uniform and non-uniform loading. Calculated the fuel consumption of the car for a hundred kilometers. In the further part he calculated the parameters of the drum-type brake system, performed system modernization and calculated disc brakes. Also, one of the tasks was to restore the camshaft, in which I chose ways to restore the part, selected the equipment, calculated the allowances and time to process each of the defects. Special programs such as “Mathcad”, “Compass 3D”, “Paint” were used to perform calculations and graphics.
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Zhou, Jing. "Virtual turning system." Thesis, 2005. http://hdl.handle.net/2429/16927.
Full textAbstract:
The goal of machining industry is to produce the first part correctly and most optimally
without resorting costly trials on the shop floor. This thesis presents a Virtual Turning system
which predicts the physics of machining rotational parts before actual production on the shop floor.
As opposed to measurement of physical dimensions, cutting forces, torque, and power, they are
predicted in virtual environment by integrating the laws of metal cutting process and the
geometric and solid modeling of the tool-workpiece engagements along the tool path.
The proposed Virtual Turning has two fundamental modules. The first module identifies the
tool-workpiece engagement geometry along the path, which is used by the second, cutting
process simulation engine.
The initial workpiece geometry and tool path (Cutter Location) are imported from
commercial CAD/CAM systems using industry standard IGES or STEP NC graphics formats.
The tool-workpiece intersections along the tool path are identified by applying Boolean
intersections of the two parts represented by their Boundaries. In order to expedite the time
consuming computations, the in-process machining features along the path are classified,
engagement conditions are parametrically modeled, and recalled instead of using Boolean
operations recurrently along the tool path. The proposed hybrid model which consist of
tool-workpiece engagements modeled by features or solid to solid intersections, can handle
turning of a verity of two dimensional, symmetric rotational parts.Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate
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B, S. Liu, and 劉邦炫. "Surface Simulation System of Turning." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/77943622737840180176.
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Hong, Chou Ming, and 周明弘. "Development of the Intelligent Precision Turning system." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/41849242634094761020.
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碩士國立臺北科技大學
車輛工程系碩士班
90
The intelligent precision turning system was developed in this research for the cutting force of the tool between the variation of feed rate and the spindle speed. The tool always wears, so the life of tool is shortened and the roughness of the surface is decreased because of the high speed cutting for generating a greater cutting force. If the cutting force is lower, the working time would become longer when the workpiece was manufactured in the turning system. In order to extend the life of tools and to consider the efficiency of working, while the cutting process was changed by regulating the feed rate which employed the servomotor driven in the turning system for generating the constant cutting force. The mathematical model of the cutting force in the precision turning system was derived. The PID controller, fuzzy controller and SOFC (self-organization fuzzy controller) were employed to control the feed rate in the system, respectively. The optimal cutting parameters were investigated and the different controllers' were also performed to study control performances from the individually experimental result.
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LI, ZAI-CHENG, and 李再成. "A development on expert system in turning optimization." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/12751391705473360685.
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Chiu, Yung-Tsung, and 邱永聰. "Anti-Skid Braking System for Motorcycle''s Turning." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/9t2z88.
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碩士逢甲大學
自動控制工程所
91
The purpose of this research is to establish a useful model of tire''s cornering force of the motorcycle for the design of anti-skid braking control. The model takes into account the dynamics of the motorcycle, the dynamics of the wheel, the dynamics of the hydraulic control system, and the dynamics of the brake mechanism. A fuzzy controller, to control the slip ratio at a desired value 0.2 and to maintain maneuvering capability, is designed to inspect the validation of the model via simulation. Motorcycle''s cornering force value delivered from dynamic is comparative with tire''s cornering force value delivered from tire''s slip angle. It can decide that anti-skid braking system for motorcycle''s turning is good or not.
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YU, ZHI-CHAO, and 余智超. "Development of Turning CAM Integrated System by Using NX." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/54gz5r.
Full textAbstract:
碩士國立虎尾科技大學
機械與電腦輔助工程系碩士班
107
Computer-aided manufacturing (CAM) has replaced the handwritten NC code gradually. The CAM software calculates to produce tool paths, and directly simulates on the computer. This software helps to manufacture complicated yet precise components. When an engineer operates the CAM system depending on his experience and subjective ideas to decide the cutting strategy, this situation could reflect some difficulties in standardization and management of manufacturing companies. In addition, manually designed operation steps maybe too complicated, leads to reduce the efficiency of tool path planning. Therefore, this study not only researched on how to simplify the operation steps and procedures but also reduced the operational threshold. This thesis uses Siemens NX with Visual Studio C# to configure the secondary development environment. This study also adopts the API library provided by Siemens NX to import NXOpen function language into Visual Studio C# for program edition. For the development of a CAM-integrated turning system, this includes some common machine operations, such as the rough turning of the object’s surface, outer- and inner diameter, the finish turning of outer- and inner diameter, and the grooving of the inner diameter of an object. This integrated system is triggered by a custom menu in NX. The dialog interface of the system is designed to be multi-paged with streamlined content. All operations and parameter settings are integrated in the main interface. The path data generated by NX are exported into NC code with a novel lathe post-processor, which established in this study. Then, this NC code is imported into Vericut software for cutting simulation. Ultimately, the parts are practically cut using a CNC lathe machine. The actual cutting results verify that the tool paths generated in this system is feasible and reasonable. This study simplified the CAM turning process by parameterize the input of operations and standardize the processing strategy, thus increased the efficiency of tool path planning, and reduced human errors and operational thresholds.
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Sun, Chih-Hsin, and 孫智鑫. "The analysis and turning control for an Advanced headlight system." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/54877627680669919742.
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碩士國立臺北科技大學
車輛工程系碩士班
92
Traditional headlight system mostly rely on fixed light system to provide low beam, high beam, and fog light to illuminate front road. It doesn’t allow cars to project headlight onto road accurately when making turns or cruising up or down hills. In addition, drivers might forget to turn on the headlight when cruising through tunnels or driving on a dark raining day, or forget to switch from high beam to normal beam when pass an incoming car. these situation would all affect drivers’ safety. Many car headlight manufacturers are aggressively developing new generation of automobile headlights, which are known as AFS(Advanced Frontlight System), to improve the traditional headlight systems. To in crease the safeness of driving at night time, this research proposes a way to solve the problems mentioned above. This research discusses the conditions such as headlight turning on and off analysis of headlight angle and its control. Generally, when cars are accelerating or slowing down, the car movement will often affect the direction illumination, and then cause a great impact on driver’s view. To solve this problem, we use axis displacements to identify the angle between car body and the ground, and use this angle to calculate deviation of headlight angle. When cars are accelerating, we adjust the direction of headlight according to car speed and safe breaking distance. When cars cruise on hills, we recognize the current situation of the car by using sensors installed on both front and rear bumpers of the cars. When cars are coming into a turn, the relations among angles of front tire, car speed, and radius of turning are calculated based on cornering equations. then use radius of turning to calculate which direction headlight should be projecting. Then the direction which headlight should be projected is then calculated from turning radius.