Готові списки джерел за темами / Selfoscillations in a pneumatic system

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Добірка наукової літератури з теми "Selfoscillations in a pneumatic system"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Selfoscillations in a pneumatic system"

Konovalov, Vladimir, Artem Kravtsov, Vladimir Zaitsev, Alexander Petrov, and Svetlana Petrova. "Pneumatic system of a seeder with pneumatic sowing." IOP Conference Series: Earth and Environmental Science 403 (December 19, 2019): 012131. http://dx.doi.org/10.1088/1755-1315/403/1/012131.

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Lazarev, V. L. "STUDY OF PERIODIC PROCESSES TAKING INTO ACCOUNT THE UNCERTAINTY STATE FACTOR OF THE ANALYZED PARAMETER." SOFT MEASUREMENTS AND COMPUTING 1, no. 7 (2021): 5–15. http://dx.doi.org/10.36871/2618-9976.2021.07.001.

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The paper describes the approach and methodology for the numerical assessment of the quality of periodic processes. With regard to their particular case the processes of selfoscillations, on the basis of the proposed approach, the problem of optimization of the control system is formulated and possible ways of solving it are shown. The practical implementation of the approach is possible when synthesizing a control system, as well as in the variant of automatic adaptive control during its operation. The proposed solutions are based on the use of methods of the theory of entropy potentials. The implementation of the proposed solutions will improve the quality of monitoring of periodic processes and the efficiency of regulation systems in selfoscillation modes.

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Sharma, Mr Subramanya. "Pneumatic Bumper Activation System." International Journal for Research in Applied Science and Engineering Technology 6, no. 3 (March 31, 2018): 3418–22. http://dx.doi.org/10.22214/ijraset.2018.3721.

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Temmyo, Ichiro, Michio SHIKANO, and Toshiyuki Nishimura. "FESTO PNEUMATIC SERVO SYSTEM." Proceedings of the JFPS International Symposium on Fluid Power 1996, no. 3 (1996): 657–60. http://dx.doi.org/10.5739/isfp.1996.657.

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Toomey, Christopher G. "Pneumatic Conveying System Optimization." IEEE Transactions on Industry Applications 50, no. 6 (November 2014): 4319–22. http://dx.doi.org/10.1109/tia.2014.2346695.

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Ligman, Gary R. "Pneumatic tool muffler system." Journal of the Acoustical Society of America 95, no. 5 (May 1994): 2791. http://dx.doi.org/10.1121/1.409776.

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Ligman, Gary A. "Pneumatic tool muffler system." Journal of the Acoustical Society of America 94, no. 2 (August 1993): 1178. http://dx.doi.org/10.1121/1.406896.

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NISHIOKA, Yasutaka, Koichi SUZUMORI, Takefumi KANDA, and Shuichi WAKIMOTO. "A NEW PNEUMATIC CONTROL SYSTEM USING MULTIPLEX PNEUMATIC TRANSMISSION." Proceedings of the JFPS International Symposium on Fluid Power 2008, no. 7-2 (2008): 439–42. http://dx.doi.org/10.5739/isfp.2008.439.

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NISHIOKA, Yasutaka, Koichi SUZUMORI, Takefumi KANDA, and Shuichi WAKIMOTO. "1A1-B02 Multiplex Pneumatic Transmission for Simplification of Pneumatic system." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2008 (2008): _1A1—B02_1—_1A1—B02_3. http://dx.doi.org/10.1299/jsmermd.2008._1a1-b02_1.

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N., Witrisnanto S., T. Futami, T. Arai, and M. Kimura. "Negative Pressure Pneumatic Servo System." Hydraulics & Pneumatics 27, no. 1 (1996): 159–64. http://dx.doi.org/10.5739/jfps1970.27.159.

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Дисертації з теми "Selfoscillations in a pneumatic system"

Шевченко, Сергій Андрійович. "Удосконалення пневмосистеми запуску ракетних двигунів шляхом стабілізації тиску робочого тіла та поліпшення її динамічних характеристик". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/29030.

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Анотація:

Дисертація на здобуття наукового ступеня кандидата технічних наук зі спеціальності 05.05.17 – гідравлічні машини та гідропневмоагрегати. – Національний технічний університет "Харківський політехнічний інститут". – Харків, 2017. Дисертація присвячена дослідженню вдосконаленої пневмосистеми багаторазового запуску маршового рідинного ракетного двигуна верхнього ступеня ракети-носія. Система запуску, яка містить частину пневмоблока двигуна, здійснює розкручування турбонасосного агрегату за рахунок подачі стисненого гелію на його турбіну. Особливістю системи є використання регулятора тиску гелію із пневмокеруванням. Розроблений й реалізований у практиці проектування новий комплекс дискретно-континуальних математичних моделей для газодинамічного розрахунку цієї пневмосистеми, а також аналізу сил тертя й витоків газу у фторопластових манжетних ущільненнях регуляторів. Запропоновано новий розрахунковий метод дослідження пневмосистеми, що проектується, на динамічну стійкість. Досліджені газодинамічні характеристики металлорукава. Розроблено нову концепцію й впроваджено конструкцію лабораторного стенда, що дозволяє економити гелій при доводочних випробуваннях системи. Виконано розрахунково-експериментальне дослідження пневмосистеми, а його рекомендації зі зміни параметрів регулятора, що знижують коливальність і поліпшують інші динамічні характеристики, впроваджені на двигуні.
The thesis for the scientific degree of the Candidate of Technical Sciences by specialty 05.05.17 – hydraulic machines and hydropneumatic units. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2017. The dissertation describes research of perfected pneumatic starting system of a main restartable liquid-propellant rocket engine destined for a launch vehicle upper stage. The starting system, which structure includes a part of the engine pneumatic unit, performs turbopump spin-up by supplying compressed helium to its turbine. A feature of the system is application of a pneumatically controlled helium pressure regulator. New complex of discrete-continual mathematical models is developed and implemented in the designing practice for the gas-dynamic analysis of this pneumatic system and analysis of friction forces and gas leaks through fluoroplastic lip-type seals of regulators. New computational method is proposed for the developed system’s dynamic stability research. The gas-dynamic characteristics of a metal hose are researched. New concept of the laboratory stand is developed and implemented to enable helium saving at development tests. Experimental-computational research of the pneumatic system is performed, recommendations of which are introduced into the engine in relation to the regulator parameters reducing oscillations and improving other dynamic characteristics.

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Шевченко, Сергей Андреевич. "Усовершенствование пневмосистемы запуска ракетных двигателей путём стабилизации давления рабочего тела и улучшения её динамических характеристик". Thesis, Государственное предприятие "Конструкторское бюро "Южное" им. М. К. Янгеля", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/29036.

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Анотація:

Диссертация на соискание ученой степени кандидата технических наук по специальности 05.05.17 – гидравлические машины и гидропневмоагрегаты. – Национальный технический университет "Харьковский политехнический институт". – Харьков, 2017. Диссертация посвящена исследованию усовершенствованной пневмосистемы многократного запуска маршевого жидкостного ракетного двигателя верхней ступени ракеты-носителя с насосной подачей компонентов топлива в камеру сгорания. Система запуска, в состав которой входит часть пневмоблока двигателя, осуществляет раскрутку турбонасосного агрегата за счет подачи сжатого гелия из шаробаллона на турбину. Особенностью системы является использование регулятора давления гелия с пневмоуправлением. Исследованная система обеспечивает пять включений двигателя РД861К при идентичных импульсах давления подачи газа, имеющих прямоугольную вершину и предельно крутые фронты. Разработан и использован в практике проектирования новый комплекс дискретно-континуальных математических моделей для газодинамического расчета этой пневмосистемы, а также анализа сил трения и утечек газа во фторопластовых манжетных уплотнениях регуляторов. В моделях учтены новые эффекты: теплообмен газа со стенками полостей и трубопроводов; инерционность газа при его выпуске из баллона; фактор сжимаемости гелия; нагрев гелия при дросселировании; проникновение уплотняемого давления в зазор между манжетой и стенкой, и ряд других. После чего отклонение расчетных значений давления газа от результатов огневых испытаний составило менее 1% Создана и реализована расчетная методика исследования пневмосистемы на динамическую устойчивость и автоколебания. В методике использованы уточненные результаты гармонической линеаризации для колебаний расхода газа через дроссель и силы трения в манжете, а также новый метод расчета импеданса разветвленной системы трубопроводов. Выведено трансцендентное уравнение для частот и амплитуд свободных нелинейных колебаний системы и предложены методы его решения. Точность определения частот автоколебаний составила 2%. Получены аналитические соотношения для параметров пневмосистемы, обеспечивающие динамическую устойчивость или автоколебания малой амплитуды. Исследованы газодинамические характеристики металлорукава, используемого в дренажной системе лабораторного стенда для исследования и настройки системы. Разработана новая концепция и внедрена конструкция стенда, позволяющая экономить гелий при доводочных испытаниях системы. Выполнено расчетно-экспериментальное исследование системы, а его рекомендации по изменению параметров регулятора, снижающие колебательность и улучшающие другие динамические характеристики, внедрены на двигателе.
The thesis for the scientific degree of the Candidate of Technical Sciences by specialty 05.05.17 – hydraulic machines and hydropneumatic units. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2017. The dissertation describes research of perfected pneumatic starting system of a main restartable liquid-propellant rocket engine destined for a launch vehicle upper stage. The starting system, which structure includes a part of the engine pneumatic unit, performs turbopump spin-up by supplying compressed helium to its turbine. A feature of the system is application of a pneumatically controlled helium pressure regulator. New complex of discrete-continual mathematical models is developed and implemented in the designing practice for the gas-dynamic analysis of this pneumatic system and analysis of friction forces and gas leaks through fluoroplastic lip-type seals of regulators. New computational method is proposed for the developed system’s dynamic stability research. The gas-dynamic characteristics of a metal hose are researched. New concept of the laboratory stand is developed and implemented to enable helium saving at development tests. Experimental-computational research of the pneumatic system is performed, recommendations of which are introduced into the engine in relation to the regulator parameters reducing oscillations and improving other dynamic characteristics.

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Filipp, Kratschun [Verfasser]. "Transient Pneumatic System Simulation / Kratschun Filipp." Düren : Shaker, 2020. http://d-nb.info/1213472571/34.

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Bromley, II Michael William. "Pneumatic Particulate Collection System Analysis and Design." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/33562.

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Анотація:

A pneumatic particulate collection system harnesses the energy associated with the release of a compressed gas to transport particulate to a collection chamber. In an effort to improve the efficiency of a previously designed collection system, high speed imaging in conjunction with computational fluid dynamics (CFD) was utilized to highlight design deficiencies. Areas of recirculation within the collection device as well as impingement of the sampling surface were observed through the testing and CFD analysis. The basis of the improved collection system was conceived through research of pneumatic transport and the deficiencies found through testing and simulation. An improved rectangular-duct-styled system was designed in three main stages. A variety of filters used to contain the desired particulate were characterized through testing for use in simulations as well as fluids calculations. The improved system was then analyzed utilizing compressible and incompressible flow calculations and design iterations were conducted with CFD to determine the final parameters. The final design was simulated with a multiphase flow model to examine the particulate entrainment performance. The improved collection system efficiently expanded and developed the gas flow prior to the collection area to employ the particulate entrainment process. The final design was constructed with an additive manufacturing process and experimentally tested to validate the simulations and flow calculations. The testing proved that the final design operated purely on particulate entrainment and collected only the top layer of particles as simulated. The improved collection system eliminated all areas of flow recirculation and impingement of the particle bed to provide a more efficient sampling device.
Master of Science

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Birk, Wolfgang. "Multivariable control of a pneumatic conveying system." Licentiate thesis, Luleå tekniska universitet, Signaler och system, 1999. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17648.

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This licentiate thesis deals with a multivariable controller of a pneumatic conveying system. The industrial process used to illustrate design, analysis and implementation of a multivariable controller is the injection of fine coal into a blast furnace. In the blast furnace process, coke is replaced by fine coal because of economical and environmental reasons. The coal mass flow to the blast furnace becomes a crucial parameter for its operation and hence a control system should be in place to maintain a constant flow. An optimal multivariable linear-quadratic controller has been designed in order to replace the conventional PI-controllers, which were not able to reach the desired control objectives. The design is analyzed by deriving the sensitivity functions of the closed loop system to noise, disturbances and uncertainties. The multivariable controller is then validated through experiments and test operation at the coal injection plant at SSAB Tunnplåt AB in Luleå, Sweden. The reached performance improvements compared with the conventional PI-controllers account for up to 80%. Finally, the controller is combined with a gas-leakage detection system to the commercially available product SafePCI, which is now installed and in operation at SSAB Tunnplåt AB in Luleå, Sweden.
Godkänd; 1999; 20061025 (ysko)

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Bachmann, Ryan. "On the dynamics of a pneumatic positioning system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq20605.pdf.

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Le, Minh-Quyen. "Development of bilateral control for pneumatic actuated teleoperation system." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00717743.

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The aim of this thesis is to investigate the development and control of electro-pneumatic actuators in a haptic teleoperation system. For controlling the mass flow rate of such actuators, two types of valve technology are sudied, i.e. solenoid (on/off) valve and proportional servovalve. The servovalves have found widespread applications in which high accuracy of force/position control are needed. They are however typically expensive due to the requirements of high-precision manufacturing. Therefore, the low-cost solenoid valves can be an alternative to the servovalves for achieving acceptable-performance pneumatic control. Generally, the highly nonlinear of the pneumatic actuator is heightened when it uses on/off solenoid valves instead of servovalves. In this case, precise control is challenging due to the discrete-input nature of the system. Our first objective is to demonstrate that it is possible to design an acceptable performance teleoperation system using master-slave robots that have pneumatic actuators equipped with only inexpensive on/off solenoid valves. To control efficiently the switching valves, several control approaches have been proposed, namely pulse width modulation (PWM), hybrid algorithm, and sliding mode control. A hybrid control theory, which includes more switching control modes, than PWM, allows to reduce the chattering problem and improve the energy consumption of the valves. Another strategy (i.e. a sliding mode control), which does not depend on the pneumatic model, is proposed. This control stratgy allows to perform not only the transparent analysis but also the stability analysis. In order to improve the dynamic performance and reduce the chattering problem in solenoid valve actuated pneumatic teleoperation systems, a five-mode sliding control scheme has been used, which can be considered as an extension of the three-mode sliding controller. Our study demonstrates that by increasing the number of possible control actions for the valves, we can reduce the valves' switching activities, hence improving the valve's life times at no cost to teleoperation transparency. The second objective of the thesis involves in implementing the proportional servovalves on the pneumatic teleoperation system. A comparison related to the teleoperation performance between an on/off valve and a servovalve is carried out. In experiments, it is observed that with the bilateral teleoperation architecture employing solenoid valves or servovalves, satisfactory force and position tracking between the master and the slave is obtained. In bilateral teleoperation control, force sensors are often omitted to save cost and to lessen weight and volume. Therefore, another aspect of our work consists in using observers for an estimation of operator and environment forces. Experimental results show that acceptable teleoperation transparency based on a simple Nicosia observer and a tangent linear control approach can be achieved.

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KUHNER, GUILHERME SESTO. "DIGITAL CONTROL OF A PNEUMATIC POSITIONING SYSTEM FOR BIOMAGNET MEASUREMENTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1996. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9376@1.

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Este trabalho apresenta uma solução para o problema de posicionamento automático preciso de um corpo em um plano horizontal, atendendo à restrição de não gerar campo magnético significativo junto ao objeto a ser posicionado. A motivação do trabalho reside na necessidade, por parte do Laboratório de Supercondutividade Aplicada e Magnetismo (LSAM) do Departamento de Física, de um posicionador para experimentação em magnetocardiografia. Inicialmente são discutidas as tecnologias de automação aplicáveis ao problema, justificando-se a opção por um sistema pneumático de atuação. O sistema posicionar montado é então descrito em profundidade, abordando-se os aspectos relacionados à geometria do problema em questão, materiais, montagens mecânicas e o sistema de controle digital. A seguir é apresentada uma abordagem matemática para o problema de controle de posição em malha fechada, visando à definição de uma lei de controle aplicável ao caso em estudo. Alguns resultados analíticos são obtidos para controle de sistema caracterizados por atrito Coulombiano, ao mesmo tempo em que se desenvolve um modelo para simulação numérica da dinâmica de movimento do posicionador. Com base nestas duas ferramentas, é apresentada uma discussão sobre a aplicabilidade dos controladores da família PID ao caso específico considerado. Por fim, resultados reais obtidos com a lei de controle proposta são comparadores aos resultados simulados, mostrando-se a validade e a utilidade do modelo teórico.
This thesis presents a solution or the problem of automatic precise positioning of na object in the horizontal plane, not generating any significative magnetic field in the region close to the object to be positioned. The study presented was developed as part of an effort to fulfill a necessity for a positioning system for magnetocardiography experimentation in the Magnetism and Applied Supercondutivity Laboratory of the Departament of Physics of this University. A discussion over applicable automation option is presents, along with a justification for a choice of a pneumatic actuating system. The whole precise positioning assembly is described in detail, including subjects such as movement geometry, material, mechanical structures and the digital control system. A mathematical study of the closed of the closed loop position control problem is then developed, aiming to define a control algorithm applicable to the problem. Algebraic analysis is used to describe the influence of Coulomb friction over the equations of motion of a proportional position control system, while a model for simulations experiments of the assembly´s positioning dynamics is developed. These tools are used as the basis for a discussion over the applicability of the PID controlers in the case in study. Moreover, the behavior of the proposed algorithm is recorded and compared to the results of the simulations, showing the correctness and the utility of the theoretical analysis.

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Rahim, R. Abdul. "A tomographic imaging system for pneumatic conveyors using optical fibres." Thesis, Sheffield Hallam University, 1996. http://shura.shu.ac.uk/20259/.

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This thesis presents an investigation into the application of optical fibre sensors to a tomographic imaging system. Several sensing mechanisms for measurement using non-intrusive techniques are discussed and there relevance to pneumatic conveying discussed. Optical systems are shown to be worthy of investigation. The optical sensor is modelled to predict the expected sensor output voltage profiles arising from different, artificially produced flow regimes. These artificial flow regimes are created by placing a shaped obstruction inside a gravity drop conveyor in the path of the flowing solids. It is shown that for two arrays, each consisting of sixteen transducers, approximately 30% of the measurement volume is sampled. An image reconstruction method for optical tomography is described, based on the back projection between view lines algorithm. The design of the optical tomography system is described, with emphasis on preparation of the ends of the optical fibre, beam collimation and design of the transmitter and receiver circuits. The optical sensors are evaluated singly and as a tomographic array. Results relating to concentration measurement are presented for solids flow using sand with a mean of 300 micron and plastic beads of 2 mm nominal diameter. Measurements were made with a single optical sensor using the gravity flow rig. The results demonstrate the suitability of the optical sensor for concentration measurement for lightly loaded flows (up to approximately 2% solids by volume in the test). The test is extended to all thirty-two sensors using a range of solids mass flow rates from 40 to 320 gm/s with both dry sand and plastic beads over a range of artificially created flow regimes. The results obtained by comparing the measured and predicted flowrates show good general agreement. The statistical parameters for the error of the sand flow measurement have been calculated as having a mean of 6.76% and standard deviation of 3.94% and for plastic beads is 5.43% and standard deviation of 0.21%. The results also demonstrates that the system is reasonably independent of flow regime and so the optical fibre system is suitable as a concentration meter. Back projection is used to generate tomographic images as an alternative representation of the data on concentration measurement. This provides a visual representation of optical density (concentration) information which is not obvious from the concentration measurements. Results from experiments on particles with different sizes are presented. The results are analysed using frequency spectrum techniques and shown to be dependent upon the particle size for approximately spherical particles with diameters between 600 |im and 5 mm. Suggestions for further work on optical fibre sensors and optical fibre tomographic measurements are made.

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Lorente, Zamora Joanes, and Aguirrezabala Gorka Sorarrain. "Modelling and emulation of industrial electric, pneumatic and hydraulic system." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-16053.

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In recent years, the University of Skövde (HiS) is carrying an advance research in Virtual Commissioning and Emulation. The main goal of the research is to test and verify the control logic of an industrial system virtually before implementing it in the real industry. Literature shows how higher modeling detail level is needed taking into account aspects such as geometry, kinematic, behavior and interfaces. That makes an interesting branch of research for the university and that is the reason why the university is focusing on creating models in component level, where a complete emulation data model is being expanded. The aim of this thesis is to develop a way of modelling electric, hydraulic and pneumatic connections in order to create independent models that can be connected between them for creating systems. Furthermore, an energetic analysis of the system has been done. In the first part of the thesis, a frame of reference and a literature review has been done in order to learn about the fields that the authors are going to work. After that, the simulation models of different electric, pneumatic and hydraulic components have been created with a method, inspired by the producer/consumer concept, which provides a generic solution that allows energy flow in different domains between components in a simple way. Then, different component simulation models have been connected in order to emulate more complex systems. Once the models are done, there have been some test in order to know if all perform as expected. Finally, a discussion of the failures which have been during the project have been done. The experiments done have shown that the proposed and then implemented system has fulfilled all the objectives, unlocking the next step of the emulation development.

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Книги з теми "Selfoscillations in a pneumatic system"

Murphy, Jason. Energy analysis of the pneumatic capsule pipeline system. Sudbury, Ont: Laurentian University, School of Engineering, 2000.

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Pan, Hongtao. A further study on high speed pneumatic pick-and-place positioning system. Leicester: De Montfort University, 2002.

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Curry, Robert E. Flight evaluation of a pneumatic system for unsteady pressure measurements using conventional sensors. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1990.

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Curry, Robert E. Flight evaluation of a pneumatic system for unsteady pressure measurements using conventional sensors. Edwards, Calif: Ames Research Center, 1989.

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Leeuwen, S. Storm van. A simple and low cost system to measure delay times in pneumatic systems. Amsterdam: National Aerospace Laboratory, 1990.

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Whitmore, Stephen A. Development of a pneumatic high-angle-of-attack flush airdata sensing (HI-FADS) system. Edwards, Calif: National Aeronautics and Space Administration, Ames Research Center, Dryden Flight Research Facility, 1991.

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Pomroy, William H. Rapid response pneumatic fire detection for multilevel metal mines: System design and in-mine testing. Pgh [Pittsburgh], PA: U.S. Dept. of the Interior, Bureau of Mines, 1990.

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The silent emergency (pneumatic system malfunction). [Washington, D.C.] (800 Independence Ave., S.W., Washington 20591): [Federal Aviation Administration, Aviation Safety Program, 2000.

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Beater, Peter. Pneumatic Drives: System Design, Modelling and Control. Springer, 2010.

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Beater, Peter. Pneumatic Drives: System Design, Modelling and Control. Springer, 2007.

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Частини книг з теми "Selfoscillations in a pneumatic system"

Yin, Yaobao. "Pneumatic Servo System." In High Speed Pneumatic Theory and Technology Volume I, 257–98. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-5986-6_5.

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Salam, Md Abdus. "Pneumatic System Components." In Fundamentals of Pneumatics and Hydraulics, 345–59. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0855-2_10.

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Marcus, R. D., L. S. Leung, G. E. Klinzing, and F. Rizk. "System design and worked examples." In Pneumatic Conveying of Solids, 507–69. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0405-7_14.

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Klinzing, G. E., R. D. Marcus, F. Rizk, and L. S. Leung. "System design and worked examples." In Pneumatic Conveying of Solids, 543–91. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-015-8981-9_14.

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Abu Osman, N. A., and G. Pirouzi. "Air Pneumatic Suspension System (APSS)." In Prosthetic Biomechanics in Engineering, 73–94. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003196730-5.

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Mutyam, Nagashiva, T. S. S. Siva Saikumar, and Bhanumurthy Soppari. "Design of Sequential Electro-Pneumatic System." In Learning and Analytics in Intelligent Systems, 610–15. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-24314-2_72.

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Mitran, Tudor, Catalin Chioreanu, George Dragomir, and David Fagadar. "A Pneumatic Propulsion System for Urban Cars." In Proceedings of the 4th International Congress of Automotive and Transport Engineering (AMMA 2018), 659–66. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94409-8_77.

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Atharva Patankar, Ajay Makawana, and Manaswita Bose. "Dune Formation in Horizontal Pneumatic Conveying System." In Fluid Mechanics and Fluid Power – Contemporary Research, 1609–16. New Delhi: Springer India, 2016. http://dx.doi.org/10.1007/978-81-322-2743-4_153.

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Deaconescu, Andrea, and Tudor Deaconescu. "Bio-Inspired Pneumatic Muscle Actuated Robotic System." In Intelligent Automation and Systems Engineering, 27–40. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0373-9_3.

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Miyajima, Takashi, Kenji Kawashima, Toshinori Fujita, Kazutoshi Sakaki, and Toshiharu Kagawa. "Air Consumption of Pneumatic Servo Table System." In Lecture Notes in Computer Science, 324–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/978-3-540-30585-9_36.

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Тези доповідей конференцій з теми "Selfoscillations in a pneumatic system"

Toomey, C. G. "Pneumatic conveying system optimization." In 2013 IEEE-IAS/PCA Cement Industry Technical Conference. IEEE, 2013. http://dx.doi.org/10.1109/citcon.2013.6525278.

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Gilberti, Victor Eduardo. "Pneumatic Start-Stop System." In SAE Brasil 2007 Congress and Exhibit. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-01-2767.

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Elmasry, Aly, and Matthias Liermann. "Passive Pneumatic Teleoperation System." In ASME/BATH 2013 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fpmc2013-4464.

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This paper describes the modeling and control of a pneumatic tele-operation scheme, where the connection of master and slave cylinder is realized signal based but also physically via long transmission lines. The system is called passive because of the passive physical connection, which can also serve as a safety fallback solution. The advantage of this scheme is that a limited force feedback is realized with a minimum of extra effort in comparison to a teleportation system without force feedback. The stiffness of the physical connection is enhanced through a cascaded position and pressure control scheme with two proportional valves as actuators for each pneumatic line. The paper presents the mathematical model of the setup, which is used to determine the relative stability of the dynamic system as a function of control parameters. An experimental setup is presented which was set up to validate the system model. For a distance of 5 m between master and slave cylinder a stiffness of 2.4 N/mm could be established.

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Kopecny, L., and L. Zalud. "Hybrid electro-pneumatic robotic arm - integration of pneumatic muscle actuator." In 2011 IEEE/SICE International Symposium on System Integration (SII 2011). IEEE, 2011. http://dx.doi.org/10.1109/sii.2011.6147523.

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Mercado, E. J., and J. R. Rao. "THE PNEUMATIC SCOUR DETECTION SYSTEM." In 19th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2006. http://dx.doi.org/10.3997/2214-4609-pdb.181.41.

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Pastrascioiu, Cristian, Marian Popescu, and Sabin Stamatescu. "Teaching System for Pneumatic Actuations." In 2018 10th International Conference on Electronics, Computers and Artificial Intelligence (ECAI). IEEE, 2018. http://dx.doi.org/10.1109/ecai.2018.8679081.

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Mercado, E. J., and J. R. Rao. "The Pneumatic Scour Detection System." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2006. Environment and Engineering Geophysical Society, 2006. http://dx.doi.org/10.4133/1.2923673.

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Zacny, Kris, Bruce Betts, Magnus Hedlund, Paul Long, Marc Gramlich, Keith Tura, Phil Chu, Abigail Jacob, and Abel Garcia. "PlanetVac: Pneumatic regolith sampling system." In 2014 IEEE Aerospace Conference. IEEE, 2014. http://dx.doi.org/10.1109/aero.2014.6836409.

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Yamamoto, S., T. Miyoshi, T. Komeda, K. Hiramatsu, K. Nakazawa, and M. Akai. "Development of Pneumatic Gait Assist System." In 2007 IEEE/ICME International Conference on Complex Medical Engineering. IEEE, 2007. http://dx.doi.org/10.1109/iccme.2007.4381961.

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Ren, Hai-Peng, and Chao Huang. "Experimental tracking control for pneumatic system." In IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2013. http://dx.doi.org/10.1109/iecon.2013.6699797.

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Звіти організацій з теми "Selfoscillations in a pneumatic system"

Fehr, Brandon Michael. Analytical Solution to the Pneumatic Transient Rod System at ACRR. Office of Scientific and Technical Information (OSTI), January 2016. http://dx.doi.org/10.2172/1237408.

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Gehrke, R. J., S. M. Berry, E. G. Grafwallner, and J. M. Hoggan. A pneumatic transfer system for special form {sup 252}Cf. Office of Scientific and Technical Information (OSTI), September 1996. http://dx.doi.org/10.2172/425282.

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Bocconcelli, Alessandro, Peter Tyack, Peter H. Kvadsheim, and Lars Kleivane. Development of a Pneumatic Launcher Delivery System for the New Digital Recording Tag, DTAG3. Fort Belvoir, VA: Defense Technical Information Center, September 2013. http://dx.doi.org/10.21236/ada598734.

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Bocconcelli, Alessandro, Peter Tyack, Petter H. Evadsheim, and Lars Kleivane. Development of a Pneumatic Launcher Delivery System for the New Digital Recording Tag, DTAGv3. Fort Belvoir, VA: Defense Technical Information Center, September 2012. http://dx.doi.org/10.21236/ada573317.

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Arnold, James F., and James F. Arnold. Instrumentation and Data Analysis Supporting the Transient Rod Pneumatic System Design Study at the Annular Core Research Reactor. Office of Scientific and Technical Information (OSTI), August 2016. http://dx.doi.org/10.2172/1561821.

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Bamberger, J. A., M. A. McKinnon, D. A. Alberts, D. E. Steele, and C. T. Crowe. Development of a multi-functional scarifier dislodger with an integral pneumatic conveyance retrieval system for single-shell tank remediation. FY93 summary report. Office of Scientific and Technical Information (OSTI), October 1994. http://dx.doi.org/10.2172/10105835.

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Pullammanappallil, Pratap, Haim Kalman, and Jennifer Curtis. Investigation of particulate flow behavior in a continuous, high solids, leach-bed biogasification system. United States Department of Agriculture, January 2015. http://dx.doi.org/10.32747/2015.7600038.bard.

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Recent concerns regarding global warming and energy security have accelerated research and developmental efforts to produce biofuels from agricultural and forestry residues, and energy crops. Anaerobic digestion is a promising process for producing biogas-biofuel from biomass feedstocks. However, there is a need for new reactor designs and operating considerations to process fibrous biomass feedstocks. In this research project, the multiphase flow behavior of biomass particles was investigated. The objective was accomplished through both simulation and experimentation. The simulations included both particle-level and bulk flow simulations. Successful computational fluid dynamics (CFD) simulation of multiphase flow in the digester is dependent on the accuracy of constitutive models which describe (1) the particle phase stress due to particle interactions, (2) the particle phase dissipation due to inelastic interactions between particles and (3) the drag force between the fibres and the digester fluid. Discrete Element Method (DEM) simulations of Homogeneous Cooling Systems (HCS) were used to develop a particle phase dissipation rate model for non-spherical particle systems that was incorporated in a two-fluid CFDmultiphase flow model framework. Two types of frictionless, elongated particle models were compared in the HCS simulations: glued-sphere and true cylinder. A new model for drag for elongated fibres was developed which depends on Reynolds number, solids fraction, and fibre aspect ratio. Schulze shear test results could be used to calibrate particle-particle friction for DEM simulations. Several experimental measurements were taken for biomass particles like olive pulp, orange peels, wheat straw, semolina, and wheat grains. Using a compression tester, the breakage force, breakage energy, yield force, elastic stiffness and Young’s modulus were measured. Measurements were made in a shear tester to determine unconfined yield stress, major principal stress, effective angle of internal friction and internal friction angle. A liquid fludized bed system was used to determine critical velocity of fluidization for these materials. Transport measurements for pneumatic conveying were also assessed. Anaerobic digestion experiments were conducted using orange peel waste, olive pulp and wheat straw. Orange peel waste and olive pulp could be anaerobically digested to produce high methane yields. Wheat straw was not digestible. In a packed bed reactor, anaerobic digestion was not initiated above bulk densities of 100 kg/m³ for peel waste and 75 kg/m³ for olive pulp. Interestingly, after the digestion has been initiated and balanced methanogenesis established, the decomposing biomass could be packed to higher densities and successfully digested. These observations provided useful insights for high throughput reactor designs. Another outcome from this project was the development of low cost devices to measure methane content of biogas for off-line (US$37), field (US$50), and online (US$107) applications.

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Bank Premises Department - Sydney - Martin Place, Castlereagh & Elizabeth Streets - C.S.B. Building - Pneumatic Tube System - 1932-1937. Reserve Bank of Australia, March 2022. http://dx.doi.org/10.47688/rba_archives_2006/24538.

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