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Добірка наукової літератури з теми "Electrohydraulic valve"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Electrohydraulic valve"

Luomaranta, Markku, Matti Vilenius, and Ilkka Ahonoja. "Programmable electrohydraulic mobile valve." Mechatronics 2, no. 3 (June 1992): 321–28. http://dx.doi.org/10.1016/0957-4158(92)90025-j.

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RUAN, Jian, R. BURTON, Sheng LI, and Faming ZHU. "ELECTROHYDRAULIC VIBRATION EXCITED BY 2D VALVE." Proceedings of the JFPS International Symposium on Fluid Power 2008, no. 7-2 (2008): 379–84. http://dx.doi.org/10.5739/isfp.2008.379.

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Zhu, Fa Ming, and Sheng Li. "Application of Direct Actuated Digital Servo Valve in Electrohydraulic Static Loading System." Applied Mechanics and Materials 130-134 (October 2011): 4098–101. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.4098.

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Structure static testing is an important means to study the static characteristic of complex engineering structure. Electrohydraulic stactic loading system is the singnificant equipment of the testing. With its function of transfering low-power electrical singal to large-power hydraulic output quickly and precisely, the servo valve plays a key role in an electrohydraulic servo control system and dominates to a large extent the performance of the whole control system. Conventional electrohydraulic servo or proportional control is subject to the nonlinearites of their electro-mechanical interface, such as hysteresis, saturation and finite resolution. In this paper, a direct actuated digital servo valve was applied in electrohydraulic static loading system. It can be driven directly by computer needn’t D/A and has the advantages of simple structure, high tolerance to contamination and high reliability. Practical load-experiment results show that the static loading system with a direct actuated digital servo valve can work steadily and reliably and possess high accuracy and fast response.

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Li, Yao, and Jian Gang Yi. "Design and Analysis of Fault Diagnosis System of Electrohydraulic Servo Valve Based on ANN." Advanced Materials Research 785-786 (September 2013): 1380–83. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.1380.

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It is a difficulty to combine artificial neural networks (ANN) with the fault diagnosis of electrohydraulic servo valve. To slolve this problem, the fault diagnosis mechanism of electrohydraulic servo system is analysed, the effecitveness of fault diagnosis based on ANN is verified, and the pressure characteristic data are used to construct ANN samples. Finally, the algorithms of RBF, BP and Elman are compared with the built system and sampled. The results show the RBF algorithm is more rapid and accurate and the proposed intelligent fault diagnosis system of electrohydraulic servo valve is valuable.

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TIMOKHIN, SERGEY, PAVEL BOGATYREV та DMITRIY GALIN. "УСОВЕРШЕНСТВОВАННАЯ ТЕХНОЛОГИЯ РЕМОНТА ЭЛЕКТРОГИДРАВЛИЧЕСКИХ ФОРСУНОК АВТОТРАКТОРНЫХ ДИЗЕЛЕЙ". Tekhnicheskiy servis mashin 4, № 141 (грудень 2020): 74–82. http://dx.doi.org/10.22314/2618-8287-2020-58-4-74-82.

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The actual service life of electrohydraulic injectors of automotive diesel engines with a high-pressure battery system of the Common Rail type in operation is significantly lower than the claimed one, and its restoration by repair is relevant from a technical and economic point of view. One of the most wearable elements of electrohydraulic injectors is the contact surface of the ball valve seat. (Research purpose) The research purpose is in developing an improved technology for repairing electro-hydraulic injectors of automotive diesel engines with a vibration-rivet of the contact surface of the ball valve seat. (Materials and methods) The article presents the carried out theoretical substantiation of the process of vibration riveting of the ball valve seat of electrohydraulic injectors and its laboratory and bench studies using serial stands for testing electrohydraulic injectors, checking their elements and restoring the seat geometry by lapping, an electronic digital microscope. (Results and discussion) Authors confirmed the working hypothesis about the possibility of forming the ring contact surface of the ball valve of electrohydraulic injectors reinforced with a vibration riveting by creating certain hydraulic and electrical modes of its operation during the required time. For the model 0445110376 electrohydraulic injectors of the Cummins ISF 2.8 diesel engine, the total area of the hardened surface of the regular ring shape was 0.07 square millimeters, and the depth was about 0.003 millimeters with a process time of 45 minutes. The parameters of the experimental electrohydraulic injectors met the requirements of the test plan, and they are currently successfully undergoing operational tests. (Conclusions) The use of a valve seat vibration rivet will increase the life of repaired injectors at a low cost for its implementation.

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Xu, Yuliang, Jiadui Chen, and Zhenghong Liu. "Experimental Study on Hydraulic Pulsation Features of Intelligent Variable Valve System for Auto Energy Saving." Computational Intelligence and Neuroscience 2022 (May 18, 2022): 1–9. http://dx.doi.org/10.1155/2022/5679520.

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The electrohydraulic valve system can realize continuous variable valve timing and lift using the flexibility of liquid. However, the existing electrohydraulic valve systems usually rely on a high-speed solenoid valve to control the on and off states of the hydraulic circuit, which pushes up the system cost. This paper introduces a continuous hydraulic variable valve timing and lift system with adjustable volume (CVVTL). Unlike the other electrohydraulic valve systems, the CVVTL does not need a high-frequency servo valve to control each valve but adjusts the valve timing and lift by controlling the system volume. However, the maximum operating speed of hydraulic variable valve systems is limited by the inherent pressure fluctuation. To relax the limit, the authors further studied the pressure fluctuation features of the CVVTL system under various conditions and summarized the harms of the fluctuation. After identifying the causes of pressure fluctuation of the CVVTL system, the authors came up with systematic countermeasures to system pressure fluctuation.

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RUAN, Jian. "Electrohydraulic Vibration Exciter Controlled by 2D Valve." Journal of Mechanical Engineering 45, no. 11 (2009): 125. http://dx.doi.org/10.3901/jme.2009.11.125.

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REICHERT, Maxim, and Hubertus MURRENHOFF. "STIFF ELECTROHYDRAULIC DRIVES USING A HYBRID VALVE." Proceedings of the JFPS International Symposium on Fluid Power 2008, no. 7-3 (2008): 585–90. http://dx.doi.org/10.5739/isfp.2008.585.

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REICHERT, Maxim, and Hubertus MURRENHOFF. "Stiff Electrohydraulic Drives using a Hybrid Valve." JFPS International Journal of Fluid Power System 2, no. 2 (2009): 33–38. http://dx.doi.org/10.5739/jfpsij.2.33.

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TANAKA, Hirohisa, and Kenji MASUDA. "Electrohydraulic two-stage proportional pressure control valve." Transactions of the Japan Society of Mechanical Engineers Series C 55, no. 510 (1989): 503–7. http://dx.doi.org/10.1299/kikaic.55.503.

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Більше джерел

Дисертації з теми "Electrohydraulic valve"

Plummer, Andrew. "Electrohydraulic servovalves – past, present, and future." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200252.

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In 2016 it is 70 years since the first patent for a two-stage servovalve was filed, and 60 years since the double nozzle-flapper two-stage valve patent was granted. This paper reviews the many alternative servovalve designs that were investigated at that time, focusing on two-stage valves. The development of single-stage valves – otherwise known as direct drive or proportional valves – for industrial rather than aerospace application is also briefly reviewed. Ongoing research into alternative valve technology is then discussed, particularly focussing on piezoelectric actuation and the opportunities afforded by additive manufacturing.

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Schneider, Wolfgang. "Fully variable, simple and efficient - electrohydraulic - valve train for reciprocating engines." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71231.

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A new camless electrohydraulic valve train concept for combustion engines was developed at Empa (Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland) and tested on a spark ignition passenger car engine. Besides full flexibility with regard to lift and timing of the engine gas exchange valves it features robustness, simplicity and in particular a low own drive power need due to a maximum of hydraulic energy recuperation. The engine test results confirm substantial efficiency gains in classical as well as in hybrid power trains while also maintaining additional advantages. The system also has the potential to become a key element for load control of piston based compressors and expanders, reciprocating Joule Cycle engines and derivable future electricity storage systems.

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Pinder, Shane D. (Shane Donald) Carleton University Dissertation Engineering Mechanical and Aerospace. "Design of a rotary control valve for an electrohydraulic ventricular assist device." Ottawa, 1996.

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Ozturan, Ahmet. "Modeling And Experimental Evaluation Of An Electrohydraulic Pitch Trim Servo Actuator." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614156/index.pdf.

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The pitch trim actuator is a hydraulic powered electro-mechanical flight control device of UH-60 helicopters which converts a mechanical input and an electrical command into a mechanical output with trim detent capabilities. In this thesis study, pitch trim actuator is investigated and a mathematical model is developed. From these mathematical equations, the actuator is modeled in MATLAB Simulink environment. While constructing the mathematical model, pressure losses in hydraulic transmission lines and compressibility of hydraulic oil are considered. To achieve a more realistic model for valve torque motor, particular tests are carried out and the torque motor current gain and the stiffness of torque motor flexure tube and the flapper displacement are obtained. Experimental data to verify the Simulink model is acquired with KAM-500 data acquisition system. A test fixture is designed for acquiring the experimental data. This test fixture can also be used to test the pitch trim actuator during depot level maintenance and overhaul. To verify the consistency of Simulink model, acquired experimental data is implemented in Simulink environment. The output of Simulink model simulation and the experimental data are compared. The results of comparison show that the model is good enough to simulate the steady state behavior of the actuator.

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Скворчевський, Олександр Євгенович. "Підвищення динамічних характеристик мехатронних модулів поступального руху". Thesis, ГЛОБУС-ПРЕС, 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/28266.

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Скворчевський, Олександр Євгенович. "Динамічні характеристики мехатронного електрогідравлічного модуля поступального руху". Thesis, НТУ "ХПІ", 2013. http://repository.kpi.kharkov.ua/handle/KhPI-Press/28245.

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Köckemann, Albert, and Benno Birke. "Consistent Automation Solutions for Electrohydraulic Drives in Times of Industry 4.0." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200192.

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Анотація:

Electrohydraulic drives are primarily used whenever a low power/weight ratio, a compact build and/or large forces are required for individual applications. These drives are often used together with electric drive technology in machines. However, in terms of automation, unlike electric drives, electrohydraulic drives are still largely connected via analog interfaces and centralized closed control loops today. To compensate for this competitive disadvantage of hydraulic drive technology and, at the same time, significantly enhance its performance and diagnostics capability, a consistent automation solution has been developed that can be configured for both centralized and decentralized solutions. This contribution firstly gives an overview over this complete solution already available and its classification in the automation world. In a second step, the subset of decentralized drive solutions contained therein is presented in more detail and their benefits are explained on the basis of some exemplary applications.

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Opdenbosch, Patrick. "Auto-Calibration and Control Applied to Electro-Hydraulic Poppet Valves." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19758.

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Modern control design is sometimes accompanied by the challenge of dealing with nonlinear systems or plants. In some situations, due to the complexity of the plant and the unavailability of suitable models, the controls engineer opts for developing control schemes based on look-up tables. These tables, typically populated with the steady state inverse input-output characteristics of the plant, are used to compensate the plant via open-loop or closed-loop to solve the control problem. In an effort to present a new alternative, a general theoretical framework for online auto-calibration and control of general nonlinear systems is developed in this dissertation. This technique simultaneously learns the inverse input-state mapping (i.e. the calibration mapping) of the plant while forcing its state to follow a prescribed desired trajectory. The main requirements for the successful application of the novel control law are knowledge of the order of the plant and some generic data to initialize the inverse mapping. This last requirement can be easily fulfilled by using steady-state data or the equilibrium points of the plant. In this approach, the inverse mapping is learned from the current and past states. The learning is accomplished in a composite manner by employing input and state errors. The map is used simultaneously in the feedforward path to control the plant. The performance of the plant subject to this novel controller is validated through simulations and experimental data. The new control method is applied to a novel Electro-Hydraulic Poppet Valve (EHPV). These valves are used in a Wheatstone bridge arrangement for motion control of hydraulic actuators. This is preferred over the conventional use of spool valves due to the energy savings potential. It is shown in this dissertation that this method improves the value of using these types of valves for motion control in hydraulics. This is due to the combination of self-learning (auto-calibration) and better performance for a more efficient operation of hydraulic equipment. Additionally, it is shown that the auto-calibration of the valves can be used for health monitoring of the same, which consequently improves their reliability and expedites maintenance downtime.

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CHEN, JIE-ZENG, and 陳捷曾. "Model reference adaptive control of valve control electrohydraulic servo system." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/49369450186744859479.

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Книги з теми "Electrohydraulic valve"

The 2006-2011 World Outlook for Non-Aerospace-Type Hydraulic Electrohydraulic Valves Excluding Directional Control and Pilot-Operated Torque Motor Servovalves. Icon Group International, Inc., 2005.

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Parker, Philip M. The 2007-2012 World Outlook for Non-Aerospace-Type Solenoid 2-Way Hydraulic Directional Control Valves Excluding Cartridge, Stack, Logic, and Electrohydraulic Types. ICON Group International, Inc., 2006.

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The 2006-2011 World Outlook for Non-Aerospace-Type Solenoid 2-Way Hydraulic Directional Control Valves Excluding Cartridge, Stack, Logic, and Electrohydraulic Types. Icon Group International, Inc., 2005.

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Parker, Philip M. The 2007-2012 World Outlook for Non-Aerospace-Type Solenoid 3-And 4-Way Hydraulic Directional Control Valves Excluding Cartridge, Stack, Logic, and Electrohydraulic Types. ICON Group International, Inc., 2006.

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The 2006-2011 World Outlook for Non-Aerospace-Type Manual Hydraulic Directional Control Valves Excluding 3-And 4-Way Monoblock, Cartridge, Stack, Logic, and Electrohydraulic Types. Icon Group International, Inc., 2005.

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The 2006-2011 World Outlook for Non-Aerospace-Type Sectional 3-And 4-Way Monoblock Hydraulic Directional Control Valves Excluding Cartridge, Stack, Logic, and Electrohydraulic Types. Icon Group International, Inc., 2005.

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Parker, Philip M. The 2007-2012 World Outlook for Non-Aerospace-Type Manual Hydraulic Directional Control Valves Excluding 3-And 4-Way Monoblock, Cartridge, Stack, Logic, and Electrohydraulic Types. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007-2012 World Outlook for Non-Aerospace-Type Manual 3-And 4-Way Monoblock Hydraulic Directional Control Valves Excluding Cartridge, Stack, Logic, and Electrohydraulic Types. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007-2012 World Outlook for Non-Aerospace-Type Sectional 3-And 4-Way Monoblock Hydraulic Directional Control Valves Excluding Cartridge, Stack, Logic, and Electrohydraulic Types. ICON Group International, Inc., 2006.

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The 2006-2011 World Outlook for Non-Aerospace-Type Manual 3-And 4-Way Monoblock Hydraulic Directional Control Valves Excluding Cartridge, Stack, Logic, and Electrohydraulic Types. Icon Group International, Inc., 2005.

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Частини книг з теми "Electrohydraulic valve"

Milecki, Andrzej, and Jarosław Ortmann. "Electrohydraulic Valve with Two Stepping Motors." In Challenges in Automation, Robotics and Measurement Techniques, 73–79. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29357-8_7.

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Rybarczyk, Dominik, Dariusz Sędziak, Piotr Owczarek, and Adam Owczarkowski. "Modelling of Electrohydraulic Drive with a Valve Controlled by Synchronous Motor." In Advances in Intelligent Systems and Computing, 215–22. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15796-2_22.

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Rybarczyk, Dominik. "Investigations of Electronic Controller for Electrohydraulic Valve with DC and Stepper Motor." In Lecture Notes in Mechanical Engineering, 189–200. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16943-5_17.

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Lozinskyi, Dmytro O., Oleksandr V. Petrov, Natalia S. Semichasnova, Konrad Gromaszek, Maksat Kalimoldayev, and Gauhar Borankulova. "Application of feedback elements in proportional electrohydraulic directional control valve with independent flows control." In Mechatronic Systems 1, 127–36. London: Routledge, 2021. http://dx.doi.org/10.1201/9781003224136-11.

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Rybarczyk, Dominik, Piotr Owczarek, and Arkadiusz Kubacki. "Design of Control System for an Electrohydraulic Drive Based on the Valve with PMSM Motor." In Challenges in Automation, Robotics and Measurement Techniques, 63–71. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29357-8_6.

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Milecki, Andrzej, Dominik Rybarczyk, and Piotr Owczarek. "Application of the MFC Method in Electrohydraulic Servo Drive with a Valve Controlled by Synchronous Motor." In Recent Advances in Automation, Robotics and Measuring Techniques, 167–74. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05353-0_17.

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"Jet-Pipe Electrohydraulic Servo Valve." In Electro Hydraulic Control Theory and Its Applications Under Extreme Environment, 53–106. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-814056-7.00003-3.

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"Optimal Design of the Electrohydraulic Servo Valve." In Electro Hydraulic Control Theory and Its Applications Under Extreme Environment, 419–61. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-814056-7.00013-6.

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"Electrohydraulic Servo Valve in Vibration and Impact Environment." In Electro Hydraulic Control Theory and Its Applications Under Extreme Environment, 353–83. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-814056-7.00011-2.

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Shi, Zhanqun, Fengshou Gu, Andrew Ball, and Hong Yue. "Failure Analysis and Fault Simulation of an Electrohydraulic Servo Valve." In Condition Monitoring and Diagnostic Engineering Management, 881–87. Elsevier, 2001. http://dx.doi.org/10.1016/b978-008044036-1/50104-9.

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Тези доповідей конференцій з теми "Electrohydraulic valve"

Book, Ruth, and Carroll E. Goering. "Programmable Electrohydraulic Valve." In International Off-Highway & Powerplant Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-2852.

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Krishnaswamy, K., and P. Y. Li. "Passive control of an electrohydraulic actuator using an electrohydraulic passive valve." In Proceedings of American Control Conference. IEEE, 2001. http://dx.doi.org/10.1109/acc.2001.946270.

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Gassman, Max P., and Mark A. Schoessler. "Electrohydraulic Valve with Cylinder Piston Velocity Feedback." In SAE Earthmoving Industry Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1998. http://dx.doi.org/10.4271/981486.

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Kloeppel, Gregg M. "Controlling Hydraulic Shock with an Electrohydraulic Valve." In International Off-Highway & Powerplant Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1993. http://dx.doi.org/10.4271/932405.

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Sheth, J. M., and V. K. Nanda. "Electrohydraulic Load Sensing Actuator Mounted Directional Control Valve." In 1985 SAE International Off-Highway and Powerplant Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1985. http://dx.doi.org/10.4271/851503.

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Rybarczyk, Dominik. "Investigation of electrohydraulic valve with the stepper motor." In 2ND INTERNATIONAL CONFERENCE ON CHEMISTRY, CHEMICAL PROCESS AND ENGINEERING (IC3PE). Author(s), 2018. http://dx.doi.org/10.1063/1.5066530.

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Pournazeri, Mohammad, Amir Khajepour, and Amir Fazeli. "A New Valve Lift Control Technique in Electrohydraulic Variable Valve Actuation Systems." In ASME 2010 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/icef2010-35050.

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Анотація:

Besides valve timings and opening duration control, several benefits could be achieved in engine operation if the valve actuation system could control the maximum valve displacement during a particular engine condition. Typically, in most electro-hydraulic variable valve actuation systems (VVA), the maximum valve lift along with valve opening/closing events are adjusted simultaneously by precise control of the spool travel in servo-valves. However, at high engine speeds, concurrent control of timings and peak valve lift becomes difficult and sometimes even impossible due to servo-valve response time limitations. In this paper, a new lift control technique is proposed using a control-valve located in the hydraulic supply line. Using this technique, it is possible to precisely control the valve lift even at high engine speeds. With this mechanism, the control-valve flow area could be adjusted using a low-speed actuator such as an electric motor. In contrast to conventional approaches, where maximum lift is repeatedly controlled within each cycle, valve lift in this technique can be adjusted after few engine cycles, thereby reducing control signal fluctuations and also eliminating the need for ultra-high-speed actuators. The proposed hydraulic VVA system is mathematically modeled, and a non-linear sliding mode controller is designed based on the derived equations. Finally, the performance of the proposed lift control technique is verified under different operating conditions.

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Xu, Meng, Shengkui Zeng, and Jianbin Guo. "Reliability modeling of a jet pipe electrohydraulic servo valve." In 2014 Annual Reliability and Maintainability Symposium (RAMS). IEEE, 2014. http://dx.doi.org/10.1109/rams.2014.6798480.

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Kang, Zuheng, Bahaa I. Kazem, and Roger C. Fales. "Parameterized Uncertainty Model Using a Genetic Algorithm With Application to an Electro-Hydraulic Valve Control System." In ASME 2015 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/dscc2015-9994.

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Анотація:

This work proposes a new method of determining a parameterization of an uncertainty model using a genetic algorithm. A genetic algorithm is used in a unique way to solve the non-convex parameterization problem in this work. The methods presented here are demonstrated on an electrohydraulic valve control system problem. This demonstration includes parameterizing an uncertainty class determined from test data for 30 replications of an electrohydraulic flow control valve. The parameterization of the uncertainty is used to analyze the robust stability of a control system for a class of valves.

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Milecki, Andrzej, and Jaroslaw Ortmann. "Control of electrohydraulic drive with valve having two stepping motors." In 2016 17th International Carpathian Control Conference (ICCC). IEEE, 2016. http://dx.doi.org/10.1109/carpathiancc.2016.7501148.

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Звіти організацій з теми "Electrohydraulic valve"

Tsao, T.-C., C. Tai, A. Stubbs, and A. Hanson. Electrohydraulic Valve-trains for Direct Injection Compression Ignition Camless Engine Operations - Phase I Project Final Report. Office of Scientific and Technical Information (OSTI), April 2000. http://dx.doi.org/10.2172/760873.

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