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Thomson, Ian F. "Development and application of a diagnostic system for plasma spraying." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0007/MQ46085.pdf.
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Gu, Sai. "Numerical simulations of a high velocity oxy-fuel thermal spraying system." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342062.
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Chen, Chaoyue. "Research and realization of assistant off-line programming system for thermal spraying." Thesis, Belfort-Montbéliard, 2016. http://www.theses.fr/2016BELF0303/document.
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La technologie de programmation hors-ligne permet la génération de la trajectoire complexe en projection thermique. Dans le laboratoire du LERMPS, une extension logicielle appelée « Thermal Spray Toolkit » (T.S.T.) a été développée pour assister la programmation hors-ligne dans le domaine de projection thermique. Cependant, les efforts sont encore attendus pour améliorer sa fonctionnalité. Donc, l'objectif de cette thèse est d'améliorer l'application de la programmation hors-ligne en projection thermique. Selon la procédure d'application, les travaux de cette thèse se composent de trois parties.Premièrement, les efforts sont dévoués à l'amélioration du module « PathKit » dans T.S.T., afin d'optimiser la fonctionnalité de la génération de la trajectoire. L'algorithme pour la génération de la trajectoire sur le substrat courbe a été étudié pour assurer le pas de balayage constant. Une nouvelle trajectoire « spirale d'Archimède » a été développé pour réparer les défauts par la projection à froid. La réparation sur une pièce d'aluminium avec un défaut a été réalisé pour valider la trajectoire spirale d'Archimède. Deuxièmement, les modélisations ont été développées pour simuler l'épaisseur du dépôt en 2D et en 3D. Puis, Ils sont intégrés dans le logiciel RobotStudioTM comme un module individuel dit « ProfileKit ». Dans le « ProfileKit 2D », il peut évaluer les effets des paramètres opératoires sur le profil du dépôt et puis optimiser les paramètres. Dans le « ProfileKit 3D », l'épaisseur du dépôt peut être simulée selon la trajectoire du robot et la cinématique du robot.Les fonctionnalités sont validées par un dépôt de forme trapézoïdal élaboré par la projection à froid avec les pas debalayage variés.Dernièrement, l'analyse cinématique du robot a été étudiée pour optimiser la performance du robot pendant le processus de projection. Afin de mieux évaluer la performance du robot, un paramètre « overall parameter » (OP), la moyenne pondérée d'écart-type de la vitesse articulaire est introduit pour mesurer la complexité de la trajectoire du robot. Ensuite, l'optimisation du montage de la torche ainsi que l'optimisation de la disposition de la pièce sont étudiées par l'analyse cinématique du robot et le paramètre OP. Le résultat montre que l'optimisation cinématique peut efficacement améliorer la performance du robot pour maintenir la vitesse prédéfinie<br>The offline programming technology provides the possibility to generate complex robot trajectories in thermal spray process. In the laboratory of LERMPS, an add-in software called “Thermal SprayToolkit” (T.S.T.) has been developed to assist the offline programming in the field of thermal spray.However, efforts are still expected to improve the functionality of this software. The aim of this study is to improve the application of offline programming technology in the thermal spray process. According to the procedure of the offline programming in thermal spray, the work of this thesis consists of three parts.Firstly, efforts have been dedicated to improve the module “PathKit” in T.S.T., which aim to improve the functionality of trajectory generation. The algorithm of trajectory generation for the curved substrate surface was improved to maintain a constant scan step. A novel Archimedean spiral trajectory was developed for damage component recovery application by cold spray. The experiment of an Al5056 coating depositing on a manually manufactured workpiece with a crater defect was carried out to validate the effects of spiral trajectory with adapted nozzle speed.Secondly, numerical models were developed to simulate the coating thickness distribution in 2D and 3D, and then integrated in the RobotStudio™ as an individual module named “ProfileKit”. In the “ProfileKit 2D”, it is able to evaluate the effects of operating parameters on coating profile and optimize the parameters. In the “ProfileKit 3D”, coating thickness distribution can be simulated based on the nozzle trajectory and robot kinematics data. The functionalities were validated by the trapezoid coldsprayed coating.At last, kinematic analysis was used to provide the optimization methods for a better robot performance in thermal spraying. In order to better evaluate the robot performance, an overall parameter (OP) that is the weighted mean of standard deviation of joint speed, was introduced to measure the complexity of a robot trajectory. Afterwards, the optimal nozzle mounting method as well as the optimal workpiece placement were investigated by the kinematic analysis and the overall parameter. The result shows that the kinematic optimization can effectively improve the robot performance to maintain the predefined speed
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Mondoux, Julie. "Development of a cold-gas dynamic spraying system for parameter study of aluminium coatings." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26719.
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The objectives of this work were to develop a cold gas dynamic spraying set-up which sprayed aluminium powders with different microstructures, mainly conventional and nanocrystalline particles, and to determine which of the powders is most suitable for spraying. The development of the CGDS set-up included the numerical modeling of the supersonic gas flow; this lead to the design of the converging-diverging nozzle. Two sets of experiments were conducted to validate the model and design. The preliminary experiments were conducted using both conventional and nanocrystalline powders and the initial results showed that the nanocrystalline powders had a higher Vickers hardness. The nanocrystalline coatings were denser and adhered more evenly with the substrate. The second set of experimental work was conducted only with conventionally structured particles to determine the influence of three spraying parameters on the performance of the coating. (Abstract shortened by UMI.)
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Lyasnikova, A. V., V. M. Taran, O. A. Markelova, O. A. Dudareva, and I. P. Grishina. "The Software System for Statistical Modeling of the Porous Structure of Plasma Sprayed Bi-ocompatible Coatings." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35089.
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The bioactive coating is applied on the surface of the ventplants to enhance their potential capacity of osteointegration. Getting these coatings with known characteristics is a complex problem and it requires a large number of experiments. The paper presents an algorithm and interface software program for statisti-cal modeling of the porous structure of plasma sprayed biocompatible coatings of the ventplants.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35089
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Gutjahr, Christoph [Verfasser], and Roland [Akademischer Betreuer] Gerhards. "Investigations on site-specific weed management for a decision support system for patch spraying / Christoph Gutjahr. Betreuer: Roland Gerhards." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2013. http://d-nb.info/1033108227/34.
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Valena, Martin. "Konstrukce stacionární jednotky pro mazání hlavy kolejnice." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402512.
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This master’s thesis describes design and realization of a wayside unit for top-of-rail lubrication (TOR). TOR lubricant application causes wear reduction and lower noise emission. Firstly, patent analysis was provided and critically evaluated according to which requirements for developed device were specified – accurate dosage of small lubricant volume and high repeatability. On the basis of concept design, an experimental rig was created and used for lubricant application verification and spray lubrication parameter identification. Acquired results are considered in the final design of wayside unit with a technical facility. Two utility models were created within this master’s thesis.
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Silva, Josivan Alves da [UNESP]. "Viabilidade econômica de sistemas de monitoramento em operações mecanizadas na citricultura." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151829.
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Previous issue date: 2017-09-05<br>A automação da produção agrícola proporciona mudanças na estrutura dos custos das organizações rurais, proporcionando em geral significativa redução dos custos com mão de obra e um maior controle do processo de gestão das atividades agrícolas. Por outro lado, a automação requer investimentos contínuos em novas tecnologias e uma capacidade absortiva organizacional destas novas tecnologias. Esses fatores aliados a busca pelo aumento de produtividade, competitividade e rentabilidade faz com que as empresas agrícolas potencializem seu sistema produtivo como um todo, por meio da otimização das operações que o envolve, objetivando o aumento da capacidade operacional e redução nos custos de produção. É nesse contexto que se posiciona esse trabalho, que visa analisar a viabilidade econômica da implantação de um sistema de monitoramento das operações agrícolas mecanizadas na citricultura mediante o uso de um “Global Positioning System” (GPS). Para tanto, foi feito um estudo de caso único. O caso foi estudado ao longo de toda a safra 2016/2017 em que o sistema foi implantado em 8 tratores e dois caminhões que atuaram em uma área de 2.236 ha. A partir da metodologia do Fluxo de Caixa Descontado (FCD) associado a simulação de Monte Carlo avaliou-se a viabilidade econômica do investimento. O uso do sistema de monitoramento por GPS permitiu a gestão em tempo real o controle de todas as atividades realizadas pelos equipamentos, sendo capaz, não somente, de determinar as melhores atividades a serem realizadas como também em intervir ao longo das atividades em mudanças. Os resultados financeiros evidenciaram valores de até 23,67% menores para as operações monitoradas, sendo a eficiência mais contundente junto a pulverização de Psilídeo. A análise econômica reportou para a viabilidade do investimento com 99,5% de confiança, cujo ganho em Valor Presente Líquido (VPL) por máquina representa 15% do valor de aquisição da mesma. A análise econômica reportou para a viabilidade do investimento com 99,5% de confiança, cujo ganho em Valor Presente Líquido (VPL) por máquina representa 15% do valor de aquisição da mesma. Os resultados deste estudo são pioneiros para as operações mecanizadas na citricultura e denotam a importância em sistema de automação que permitam o melhor gerenciamento das atividades de manejo na produção de laranjas.<br>The automation of agricultural production provides changes in the structure of the costs of rural organizations, generally providing significant reduction of labor costs and greater control of the process of management of agricultural activities. On the other hand, automation requires continuous investments in new technologies and an absorptive organizational capacity of these new technologies. These factors, allied to the search for increased productivity, competitiveness and profitability, mean that agricultural companies can enhance their production system as a whole, by optimizing their operations, aiming at increasing operational capacity and reducing production costs. It is in this context that this work is positioned, which aims to analyze the economic viability of the implementation of a monitoring system of mechanized agricultural operations in the citriculture through the use of a Global Positioning System (GPS). For that, a single case study was done. The case was studied throughout the 2016/2017 harvest in which the system was implanted in 8 tractors and two trucks that operated in an area of 2,236 ha. Based on the Discounted Cash Flow (CDF) methodology associated with Monte Carlo simulation, the economic viability of the investment was evaluated. The use of the GPS monitoring system allowed the real time management of all the activities carried out by the equipment, being able not only to determine the best activities to be performed but also to intervene during the activities in the changes. The financial results showed values of up to 23.67% lower for the monitored operations, being the most compelling efficiency with Psilídeo spraying. The economic analysis reported on the viability of the investment with 99.5% confidence, whose gain in Net Present Value (NPV) per machine represents 15% of the acquisition value of the same. The economic analysis reported on the viability of the investment with 99.5% confidence, whose gain in Net Present Value (NPV) per machine represents 15% of the acquisition value of the same. The results of this study are pioneers for the mechanized operations in the citriculture and denote the importance in automation system that allow the best management of the management activities in the production of oranges.
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Mohamed, Natheer Ajmal Hinas. "A framework for vision-based ground target finding and action using multirotor UAVs." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/197600/1/Ajmal%20Hinas_Mohamed%20Natheer_Thesis.pdf.
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This thesis presents a novel framework to perform single or multiple ground target finding and action missions using low-cost Unmanned Aerial Vehicles (UAVs). This framework enables small UAVs to overcome the challenges present in real-world outdoor environments due to localization and target detection errors, and external disturbances such as wind in target finding and action missions. This presented framework can be used for multiple autonomous and semi-autonomous UAV applications, including spot spraying in agriculture, search and rescue, and close inspection.
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Santos, Ivairton Monteiro. "Protocolo de roteamento de dados para redes de sensores sem fio com nó coletor móvel para controle da deriva em pulverização agrícola." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-24112014-153222/.
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A aplicação eficiente de agrotóxicos é um desafio na produção agrícola, mesmo considerando os avanços com a agricultura de precisão. O efeito deriva é o principal responsável pela ineficiência no controle das pragas ou doenças, pelo desperdício de recursos e pela contaminação ambiental. Para minimizar a deriva é essencial conhecer as condições ambientais como vento, temperatura e umidade. Esta pesquisa propõe o uso das redes de sensores sem fio como sistema de monitoramento ambiental e de suporte ao processo de pulverização agrícola, especialmente a pulverização executada por aeronave. São propostas três funcionalidades para o sistema: avaliação das condições ambientais, verificando se as condições estão apropriadas para a pulverização, buscando minimizar a ocorrência da deriva; suporte na definição e manutenção da rota do veículo pulverizador por meio dos dados do vento, de modo a efetuar ajustes na rota de pulverização e manter a aplicação do defensivo agrícola na área alvo; e a avaliação da eficácia da pulverização por meio dos dados da deposição do produto pulverizado coletados pela rede de sensores. Para viabilizar a utilização das redes de sensores sem fio no controle da deriva é proposto um protocolo de roteamento de dados que visa garantir a coleta dos dados pelos nós e a entrega para o veículo pulverizador, mesmo sendo ele um avião e se deslocando em alta velocidade. Para demonstrar a viabilidade do sistema proposto, foi desenvolvido um sistema de simulação computacional que considera os aspectos das redes de sensores sem fio e as características do protocolo de roteamento proposto. Os resultados demonstraram sua viabilidade, demonstrando que as redes de sensores sem fio podem ser utilizadas como suporte em um sistema de controle da deriva, incrementando a qualidade da pulverização, reduzindo custos e a contaminação ambiental.<br>The efficient application of low cost pesticides is a challenge for agricultural production. Pesticide drift is the major cause of money loss, inefficiency in crop disease control, and environmental contamination in the crop spraying process. At the time of application, it is essential to know the environmental conditions, such as wind, temperature and humidity to minimize contamination by pesticide drift. This study proposes the use of wireless sensor networks in a support and control system for crop spraying, especially in aircraft application methods. Three system functionalities are proposed: In the first case, the sensor network evaluates environmental data at the time of application to notify the user if the environmental conditions are suitable for continuing with the application. The second case evaluates the wind speed and its direction to suggest corrections in the path of a spray vehicle. Due to this alteration in the vehicle path, the pesticide will be applied only in the appropriate area. The final case involves collecting data samples and analyzing the quality of the spraying operation by evaluating the deposition of pesticide over the crop. This work proposes a new routing data protocol to make possible the use of wireless sensor networks in aerial crop spraying. It ensures that the sensor node data will be delivered to the sink node. Through computer simulations, wireless sensor networks are shown to be useful in crop spraying to minimize and to control pesticide drift, to improve the quality of application, to reduce environmental contamination and to reduce costs and the duration of the application operation.
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Curry, Nicholas. "Design of Thermal Barrier Coating Systems." Doctoral thesis, Högskolan Väst, Institutionen för ingenjörsvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-5931.
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Thermal barrier coatings (TBC’s) are used to provide both thermal insulation and oxidation protection to high temperature components within gas turbines. The development of turbines for power generation and aviation has led to designs where the operation conditions exceed the upper limits of most conventional engineering materials. As a result there has been a drive to improve thermal barrier coatings to allow the turbine to operate at higher temperatures for longer. The focus of this thesis has been to design thermal barrier coatings with lower conductivity and longer lifetime than those coatings used in industry today. The work has been divided between the development of new generation air plasma spray (APS) TBC coatings for industrial gas turbines and the development of suspension plasma spray (SPS) TBC systems. The route taken to achieve these goals with APS TBC’s has been twofold. Firstly an alternative stabiliser has been chosen for the zirconium oxide system in the form of dysprosia. Secondly, control of the powder morphology and spray parameters has been used to generate coating microstructures with favourable levels of porosity. In terms of development of SPS TBC systems, these coatings are relatively new with many of the critical coating parameters not yet known. The focus of the work has therefore been to characterise their lifetime and thermal properties when produced in a complete TBC system. Results demonstrate that dysprosia as an alternative stabiliser gives a reduction in thermal conductivity. While small at room temperature and in the as produced state; the influence becomes more pronounced at high temperatures and with longer thermal exposure time. The trade-off for this lowered thermal conductivity may be in the loss of high temperature stability. Overall, the greatest sustained influence on thermal conductivity has been from creating coatings with high levelsof porosity. In relation to lifetime, double the thermo-cyclic fatigue (TCF) life relative to the industrial standard was achieved using a coating with engineered porosity. Introducing a polymer to the spray powder helps to generate large globular pores within the coating together with a large number of delaminations. Such a structure was shown to be highly resistant to TCF testing. SPS TBC’s were shown to have much greater performance relative to their APS counterparts in thermal shock life, TCF life and thermal conductivity. Columnar SPS coatings are a prospective alternative for strain tolerant coatings in gas turbine engines.
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Cabrera, Plasencia Julio Joaquín, and Garay Henrry Christian Leonardo. "Gestión de calidad en el proceso de lanzado de shotcrete en túneles." Bachelor's thesis, Universidad Ricardo Palma, 2015. http://cybertesis.urp.edu.pe/handle/urp/1329.
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La investigación realizada es no experimental y de enfoque cualitativo en su mayor parte y cuantitativo en lo que resta, con alcances descriptivos y explicativos. El enfoque principal de nuestra investigación fue el problema del deficiente lanzado de Shotcrete en túneles, producto de una inadecuada gestión de la calidad, teniendo como fundamental objetivo elaborar una propuesta de gestión de calidad con la finalidad de optimizar el proceso de lanzado de Shotcrete en túneles, usando la conocida guía para la gestión de proyectos PMBOK a través de esta podemos deducir que siguiendo el área de conocimiento de gestión de la calidad alinearemos los procedimientos aprobados con el control respectivo en las distintas áreas o frentes de trabajo, además de realizar un continuo seguimiento de estos procesos con auditorías internas y externas. Se adoptó una metodología de recopilación de información, estudio y aplicación del área de conocimiento del PMBoK, determinación de cantidades de Shotcrete usado en el caso de estudio donde se analizó los costos y tiempos, y se evaluó los diferentes procesos que están relacionados con el sistema de Shotcreteado. Concluyéndose que el uso del sistema de gestión de calidad bajo los lineamientos del PMBoK es una guía de gran importancia para la aplicación en procedimientos constructivos debido a que nos señala las pautas adecuadas para la planificación, seguimiento y control de cada proceso con la finalidad de retroalimentarlo continuamente y mejorarlo si fuera el caso necesario.
The investigation is a non-experimental research, mostly qualitative and quantitative in the rest with descriptive and explanatory scopes. The main theme of our investigation was the problem of the deficient Shotcrete spraying in tunnels, product of an inadequate management of the quality, having as principal scope the elaboration of a proposal for Quality Management with the purpose of optimizing the process of Shotcrete spraying in tunnels, with the known guide for the project management PMBOK. Using this guide, we can determinate that following the Quality area of knowledge we will align the procedures approved with the respective control in the different areas or fronts of work, moreover, monitoring of these processes with internal and external audits. There was adopted a methodology of summary of information, study and application of the area of knowledge of the PMBoK, determination of Shotcrete quantities used in case of study where the costs and schedules were analyzed, and there were evaluated the different processes that are related to Shotcreting System. Concluding that Quality Management of the PMBoK is a guide of great importance for the application in constructive procedures due to the fact that indicates the guidelines for planning, assurance and control of every process with the purpose of control and improvement if it was necessary.
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Roy, Thomas Robert. "Plasma Potential Measurements in a Colloid Thruster Plume." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-042705-114729/.
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Linh, Tao Ngoc, and 曹堯立. "Autonomous Spraying System for Tube-liked Products." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/81343900288831609440.
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碩士<br>國立臺灣科技大學<br>機械工程系<br>101<br>Automatic path planning in paint coating is highly desirable for today’s automotive manufacturing. For complex products with free-form geometry, to achieve the requirement of the desirable paint thickness on the product is still a challenge. A reliable path planning system enables multilink manipulators with spraying guns to perform their tasks more efficiently. Moreover, modern manipulators could perform their tasks in a sophisticated way which is often defined by comprehensive trajectories.
The thesis contributes a novel approach for generating trajectories for a 6-axis manipulator to perform spray-coating in tube-liked products such as bicycles. Products models could be acquired directly by using a 3D range camera or given in 3D CAD files. The functionality of the proposed system includes model reconstruction mechanism, path planning and manipulator control means to autonomously conduct spraying job on tube-liked products such as bicycle frames, tube shelves, etc.
The automated system presented in this thesis has been fully implemented empirically on different objects and manipulators. 3D model reconstruction system yields accurate models of products. The trajectory generating software has proved the ability of handling two different kinds of models: reconstructed or defined by CAD models. The demonstration of manipulator control algorithm for both simulation and real 6-DOF manipulators archives satisfactory results.
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Khan, Faisal. "Intelligent drone system for Pesticide Spraying application." Thesis, 2017. http://ethesis.nitrkl.ac.in/8961/1/2017_MT_FKhan.pdf.
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The aim of the project is to make an intelligent drone system for pesticide spraying application. The agriculture is one of the most important sectors and any advancement in the field of agriculture is very important. The system consists of two major subunits namely:
a) The drone system in the form of the quad copter.
b) The pesticide spraying system.
The drone carries the whole spraying system over each and every part of the crop according to the input given to it by us. The drone hovers above the crop at a fixed vertical height from the ground. The Ultrasound sensor is used to measure the distance of the top most point of the crop from the nozzle, fitted at the bottom of the sprinkling system. Based on the output sent by the Ultrasound sensor the exit velocity of the pesticide from the nozzle is selected. The range of the exit velocity that can be obtained is set by the submersible pump that we will choose. In our prototype we are using the 12V DC submersible pump. This will help to pump the pesticide through the nozzle over the crop. We are trying to implement the variable rate of spray from the nozzle exit, and the above mechanism helps in achieving the same. The drone system has parts like GPS sensor, telemetry Radio link system, Flight controller and RC (Radio Controlled) remote. The flight controller has been embedded with the most advanced firmware that it controls a lot of things simultaneously during the flight. We can integrate the GPS to figure out the current location of the UAV and to follow the given path in the field. The pesticide spraying system is integrated with the drone by RC remote which has several channels for both flight control and any other purposes also.
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陳璽宇. "Vision-Based Detection and Spraying System For Shoemaking." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/3rpk72.
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碩士<br>國立雲林科技大學<br>機械工程系<br>105<br>The influences of different spraying situations for the shoe-making spraying was analyzed and discussed in this paper to achieve good spraying result. As the uniform distribution of the adhesive is the important factors for the strength of the peel strength, this paper proposed metrology to spray smoothly for shoe soles. It has shown that that the different spraying types, spraying speeds, viscosity coefficient, and spraying angles are correlated to the distribution of the sprayed adhesive for shoe-spraying. In order to study the different spraying methods and simulate the distribution of the sprayed adhesive under different parameters, the COMSOL software was adopted to analyze the phenomenon of solid stream-spraying and establish the FEM model for different spraying conditions i.e., the viscosity coefficient and fluid density, etc. To optimize the entire uppers spraying, this paper also propose the spraying trajectory planning by combining the individual distribution model for solid stream-spraying, swirl spraying and air spray. The proposed trajectory planning can be applied to continuous spraying and compensate the deficiency of the COMSOL simulation. Finally, the proposed spraying and simulation metrology was conducted experimentally on different types of shoe soles.
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CHANG, WEI-LUN, and 張瑋倫. "The Implementation of a Track-following Spraying Coating System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/77353876854111698768.
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碩士<br>國立高雄應用科技大學<br>機械與精密工程研究所<br>104<br>This Master Thesis is mainly to research and develop a Follow the Rail's Spray Coating system. We develop a Follow the Rail Car collocation a Articulated robot and spray equipment become a Spray Coating System. When car follow the production line, we use the follow the rail car let the material turn to appropriate space when the Articulated robot need, and collocation network communication, let systems have Internet of Things(IoT) concept and remote monitor and control. Finally, we will complete exploitation of the hardware and software.
We use the aluminum alloy material to machining on most of car's mechanisms, and use the ball bearing as wheels to fix and follow the rail in car internal. About the turning mechanism, we use the bevel gear and pulley to turn the material. Part of control, when the production line is moving in, we can according to the values of frequency converter to change the car's following speed. The information of material space's rotation angle will be converted to control command of motor. Finally, the car will turning the material space's rotation angle to assign angle by trajectory tracking control. The communication, we use User Datagram Protocol(UDP) to achieve IoT for the Articulated robot, Follow the Rail Car and remote monitor and control.
This paper uses C++/CLI program language to achieve car motion control and UDP, this program can be divide into User Interface, monitor and control Interface; Follow the Rail Car's system will turning immediate when the Articulated robot command it, and the remote for computer can also understand operating state and save it immediate.
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Pourmousa, Abkenar AmirHossein. "Wire-arc spraying system: Particle production, transport, and deposition." 2007. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=742310&T=F.
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Shu, Hsien-Hao, and 許憲浩. "Study on Deodorization of Spraying System in pig farms." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/23948306765743332148.
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碩士<br>國立中興大學<br>生物產業機電工程學系<br>93<br>Properties of nozzles would be analyzed in this study. Droplets size distribution of three kinds nozzles, 4002-5, 4002-8 and NO.3, were measured by Malvern 2600 Particle Size Analyzer. SMD, VMD and flexibility of maintenance were examined. Experimental results showed NO.3 nozzle is the best. Secondly, spraying system for the open type pig farm would be established. The distance between nozzles was 3 m, spraying pressure of the nozzle was 30 kg/cm2, spraying rate was 97.3 l/min, horsepower of motor was 5 hp. Finally, deodorization effect of spraying system applying to the open type pig farm would be studied. The effects of three kinds of spraying conditions, with water, attar, and non-spraying, were compared. Record of ammonia concentration was collected by weather station and odor concentration was measured by sensory evaluation were examined. The removing rate of ammonia concentration could be reached 52.9% and 13.9% for spraying with water and attar. The highest removing rate of odor concentration could be reached 78% and 62% for spraying with water and attar.
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Hsu, Wen-Hui, and 徐文輝. "Study of Precision Variable-Rate Spraying Control System in Greenhouses." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/06755476489414844830.
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碩士<br>國立中興大學<br>生物產業機電工程學系所<br>94<br>The spray-control system with accurate variable-ratio is composed of the programming controller and the converter by using of microprocessor and the automatic adjusting speed system, the pulse bandwidth adjusting module (PWM), and braking electromagnetic valve.
The system gets the information of the moisture-need of seedling, and analyzes the accurate variable-ratio parameter in each area. To control the speed of spraying pole and the sprinkle-nozzle in terms of two parameters which are movement-speed of spraying pole and pulse clock time. We could make the spray-control system with accurate variable-ratio provide the appropriate moisture timely according to the need of crop, and reach the goal of accurate spray quantity.
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Chiu, Teng-Xian, and 邱騰賢. "Nozzle Array Spraying System for Large Area Coating of Electrochromic Glass." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/mmbdcp.
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Wu, Yu-Biaw, and 吳昱麃. "Application of piezoelectric micro-ejector system to spraying pico-liter living cells." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/99455467538476283405.
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碩士<br>國立成功大學<br>製造工程研究所碩博士班<br>97<br>Two different kinds of actuator ejector instruments are applied to spraying micro cell suspension in this research. The method is ink-jet printing mode. The thin glass combined with A4 size paper that is used to substrate ,Adobe Photoshop software is used to control spraying cell suspension fluid volume and relative positioning. The other method is spraying cell suspension fluid by created piezoelectric spraying system. This system associate X-Y two dimensions automatic positioning system and spraying component. In order to increase cells viability after spraying ,we find out some primary factors that including reduce spraying cell suspension fluid velocity, shear stress ,nozzle size suit cells and control DMEM evaporating. Cells will be dissolution and death without handling these key factors. Estimating the cell numbers and cell suspension fluid volume will be procedure in experiment.
In regeneration medical and in vitro medical field, skin and bone tissues implant rebuilding is much easy replace by biomaterial. Hence, it’s necessary to build a in vitro human tissue system to simulate that the reaction between biomaterial and cell. Pipei is the classic tool to transfer cell suspension fluid, but the spraying volume is micro litter degree. Also, process done by hand could not make excellent precision position control, further, cells drift with DMEM make it more uncertain. According to this phenomenon, we create a system that including precision position performance and spraying pico litter degree fluid. This system offer to medical researcher a new technology that spraying multi living cells on Biomaterial surface or spraying cells into the aperture of biomaterial. This technology could apply to fabricate living tissue and organ in the future.
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Guo, Jiang-Jang, and 郭金江. "Study on Deodorization of Spraying System in Pig Farm and Composting Center." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/75272201175897241959.
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碩士<br>國立中興大學<br>生物產業機電工程學系所<br>94<br>A spraying system is used in this study for deodorization in pig farm and composting center. Particle size analyzer is used to analyze particle distribution for the purpose of finding the most proper pressure of spraying system operation. Triangle force-choice bag and Gastec are both used to comprehend the deodorization result of spraying system. Concentration of ammonia and weather data is collected by ammonia measurer and weather station to analyze the interaction between them. The best operation mode of spraying system is established by the above-mentioned results.
The best effect of particle distributing is under the operation pressure set at 30 kg/cm² in the particle distribution analysis. The best deodorization effect of ammonia concentration is 92.19％ and the best deodorization effect of odor concentration is 62.02％ in the results of deodorizing experiment. There is not significant interaction between ammonia concentration and weather situation including wind speed, sunshine, temperature, relative humidity, atmospheric pressure.
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LIAO, YING-TAR, and 廖盈達. "Basic Study of Boom Sprayer Variable-rate Spraying System Using GPS/GIS." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/56038207986904129544.
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碩士<br>國立臺灣大學<br>生物產業機電工程學研究所<br>89<br>The purpose of this thesis is to develop a variable-rate spraying equipment for a boom sprayer operated under a precision agriculture system. The variable-rate spraying equipment, which is used to achieve pesticide and herbicide applications according to predetermine spraying rate that is judge in classification of insect pests and spread of weeds in the field at the right location and use the right spraying quantity.
In the field, the real time position of the boom sprayer is obtained from a GPS receiver according to its space coordinate data. For the spraying system in the boom sprayer the feasibility is investigated by adding a proportional flow rate control valve. The opening of this control valve corresponding to the flow rate and real time error of the GPS receiver are obtained by experiment.
Experiment methods are described as fallowed. First, a variable-rate spraying system and a positioning system was designed and tested separately. In the spraying system, system backflow rate is used to control spraying rate. Then this system was tested dynamically in order to study the influence of various setting values of the proportional control valve vs. backflow rate under the different pressure setting values of the pump. Finally, the data was analyzed by means of the regression method to predict the characteristics of the system performance. On the other hand, GPS receiver was tested in point positioning statically and route positioning dynamically. The experimental data was post-processed and analyzed by a GIS software to know the positioning error of this GPS receiver.
The experimental results show that the GPS receiver’s real time positioning error is less than 3 meters either statically or dynamically, so it is sufficient to guide a boom sprayer for spraying；for the backflow rate the proportional valve controllable range is within 11﹪∼64﹪. The range is then divided into 3 stages： 20﹪、40﹪and 60﹪,with 5 various pump spraying pressures, we could get 15 different variable-rate spraying effects. For the purpose of variable environment, the spraying capacity is from 7 LPM to 34 LPM.
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Chang, Yao-Lin, and 張曜麟. "Development of an Automatic Spraying System for Phalaenopsis Potted Plants in Greenhouse." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/uz4nq2.
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碩士<br>國立宜蘭大學<br>生物機電工程學系碩士班<br>107<br>The spraying operation in greenhouse is mostly carried out by manually holding spraying device which might cause uneven spraying. Some greenhouses are equipped with top spraying booms. The nozzles on the boom are prone to have the clogging problems. The liquid in the top boom might be heated in summer to cause the damage of the sprayed plants. Therefore, the objective of this study is to develop a spraying system that can automatically spray on Phalaenopsis potted plants in the greenhouse. The system applies machine vision technique to determine the spraying locations of the sphagnum moss in the pots to reduce the waste and pollution of the liquid.
A spraying nozzle is installed on the gantry-type moving mechanism driven by a stepping motor. This solenoid nozzle controlled by microprocessor can rotate and quickly spray on pots in the same row based on the image acquired by the camera. The spraying locations are minimized to reduce the stop times of the moving mechanism to enhance the spraying efficiency.
An automatic spraying system for Phalaenopsis potted plants has been successfully developed. The experiment result showed that the successful rate of the proposed vision method to determine the spraying location at the different leaf orientations and randomly placed Phalaenopsis is 100%. The successful rate of the vision method for fully filled with potted plants is about 85%. The overall spraying successful rate of the automatic spraying system is about 96.97%.
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Tsao, Chih-Chun, and 曹智鈞. "Actual Tests of the Variable-rate Spraying System for a Boom Sprayer Using GPS." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/24114754189828052815.
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碩士<br>國立臺灣大學<br>生物產業機電工程學研究所<br>92<br>To meet the demand of modern systems in precision agriculture, a variable-rate spraying system on the boom sprayer is automatically controlled by GPS (Global Positioning System) studied in this study. This system may control the spraying of pesticide and herbicide with a proportional control valve for flow rate and can reach a best policy for parameters between the plant diseases and the properties of environment by controlling the real-time dynamic position and backflow rate.
In this study, experimental methods are divided into three parts-dynamic simulation function, flow rate test and the nozzle correction. By using the simulation function of the instrument, the field operation of the boom sprayer is simulated and the detailed system results are observed. In the flow rate test, the opening of the proportional valve under different pressures are changed and various feed back conditions of the flow rate are recorded. In order to eliminate the errors of some nozzles, experiments are done several times by correcting the nozzles to obtain the acceptable results.
Experimental results show that with five different valve openings of 0 ％,18 ％,40 ％,50 ％ and 100 ％. The flow rate is also linearly proportional to the increase of time through the correction of nozzles.
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Yan-Ru, Lai, and 賴嬿如. "The Implementation of a Track-moving Ceiling-mounted Robot Arm for a Spraying Coating System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/13050708881094454103.
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碩士<br>國立高雄應用科技大學<br>機械與精密工程研究所<br>104<br>The purpose of the study was to design the rail-hanging robot which applied to the painting system. The rail-hanging robot equipped with self-developed software to implement complex movements.
The method of the motion path planning in this study was to design the velocity curve with acceleration and deceleration via the planning of velocity curve. Then, used the path interpolation to obtain the coordinates of the points which on the acceleration and deceleration of planning the motion path. Finally, used inverse kinematics to obtain the respective axes of rotation degree, then executed the multi-axis closed-loop servo control.
The method of the experiment in this study was using time domain system identification, the system parameters were identified for each axis. Then the part of control compared Manifold Deformation Design Scheme (MDDS) which proposed by C.S.Liu in 1998 with the PID controller which used most frequently on the industrial circle. The part of software and hardware integration was using FPGA motion controller combined PC-Based to establish a servo motor control system, then designed the man-machine interface which in a Microsoft Visual Studio C ++ development environment, the use of C ++ / CLI programming language tracked suspension robot motion control.
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Rocha, Inês Faria. "Avaliação de um componente do sistema anti-ice do Airbus 330." Master's thesis, 2020. http://hdl.handle.net/10316/93886.
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Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia<br>The present work addresses the problems that exist in a duct component of the Airbus A330 anti-ice system. The study could not have been carried out without the collaborationof the airline 'TAP Portugal', which provided several manuals and procedures related to the component under analysis.Inconel® 625 is a material of choice in aeronautical industry, namely in anti-ice ducts fabric. This preference is due to the excellent varied proprieties of the superalloy, nickel based, of which stands out the efficient behavior when subjected to high temperatures and highly corrosive environments. However, the anti-ice duct, which belongs to an Airbus 330, and the respective coating present a marked wear that makes it impossible to use.Thus, the aim of this dissertation goes through the analyze of the properties of the Inconel® 625 duct and the WC-12%Co ceramic coating, applied by plasma spray technique. Having this in mind, microstructure, morphology, chemical and phasic composition and adhesion of the coating to the base material would be evaluated, in order to understand the way these factors influence the performance of the duct and coating set.Due to the pandemic installed in our country, caused by SARS-CoV-2, the application of experimental methods became impossible. However, an experimental hypothesis was made through which it was intended to discuss the possible causes of the observed failures and to propose solutions for increasing the lifetime of both the metallic tube and the ceramic coating.<br>O presente trabalho aborda os problemas que existem num componente da conduta do sistema anti-congelamento da aeronave Airbus A330. O estudo não poderia ter sido efetuado sem o auxílio da companhia aérea 'TAP Portugal', que disponibilizou vários manuais e procedimentos relativos ao componente em análise.O Inconel® 625 é um material de eleição para aplicação na indústria aeronáutica, nomeadamente no fabrico dos tubos anti-ice. Esta preferência deve-se à excelente panóplia de propriedades desta superliga, à base de níquel, destacando-se o seu eficiente comportamento quando sujeita a temperaturas elevadas e ambientes altamente corrosivos. No entanto, o tubo anti-ice, pertencente ao Airbus 330, e o respetivo revestimento apresentam um desgaste acentuado que torna inviável a sua utilização.Assim, o objetivo desta dissertação passa por analisar as propriedades do tubo de Inconel® 625 e do revestimento cerâmico de WC-12%Co, aplicado através da técnica de plasma spray. Neste contexto, seriam avaliadas a microestrutura, a morfologia, a composição química e fásica e a adesão do revestimento ao substrato do material base, de modo a perceber de que forma estas influenciam o desempenho do conjunto.Devido à pandemia instalada no nosso país, causada pelo SARS-CoV-2, tornou-se impossível a aplicação dos métodos experimentais. No entanto, foi realizada uma hipótese experimental através da qual se pretendia discutir as eventuais causas das falhas observadas e propor soluções para o aumento do tempo de vida tanto do tubo metálico como do revestimento cerâmico.
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Hung, Jing-Shiang, and 洪景祥. "Appliction of GPS Speed Controllers and Proportional Valves for Variable-Rate Spraying Systems." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/20255083026769302522.
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碩士<br>國立臺灣大學<br>生物產業機電工程學研究所<br>91<br>The main purpose of this thesis is to develop a variable-rate spraying equipment for the purpose of precision agriculture . By reducing the unstable speed under man-made control, the equipment is designed to achieve more precise spraying effect. In the study, the spraying device is the same as that on the spraying vehicle. The GPS is used to simulate the travel speed and transmit signals to control a valve through a GPS receiver. Then the voltage control the openings of the valve to achieve the variable-rate spraying.
The research combines the spraying system, the GPS system, and electronic navigating system. The experiment is divided into three stages. First, the GPS system and proportional valve control system were designed and tested separately. Second, the control valve and GPS speed controller were combined and tested .Finally, the GPS speed controller and control valve were conneted together tested. The experimental results show that the positioning accuracy can reach the requirement of the precision agriculture system when the PDOP value of GPS system is under 4.9 and the deviation value is less than 2.2 meters. Besides, the new designed current stabilizer circuit provide a correction for the proportion control valve of the variable-rate spraying. By changing the voltage of GPS speed controller the opening of control valve is also improved. The experiment can obtain 18 variable-rate outputs through various pressure values of the pump (9 settings) and the different speeds corresponding to the
opening of the control valve (8km/hr and 15km/hr).
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Fayomi, Ojo Sunday. "Deposition of binary and quaternary alloys on steel for performance improvement." 2015. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001706.
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D. Tech. Chemical, Metallurgical and Materials Engineering<br>Discusses the objective of this present study is to manufacture particulate-strengthening Zn-Al-SnO2-TiO2 composite alloy on mild steel from chloride and sulphate baths with the target of improving mechanical and anti-corrosion, wear properties for automotive and decorative applications. Sub-Objectives:To study the effect of Zn-Al-SnO2-TiO2 composite properties on mild steel substrate To investigate the novel multifunctional thin films evolution formed on mild steel and their tribological properties. To investigate thermo-mechanical recrystallization behaviour and its thermal instability.To study the anti-corrosion resistance performance of the electrofabricated quaternary Zn-Al-SnO2-TiO2 coatings.To draw attention to the functional processing parameters of Zn-Al-SnO2-TiO2 produced coatings for high durability.