Relevant bibliographies by topics / Electro-hydrostatic actuation

Academic literature on the topic 'Electro-hydrostatic actuation'

Author: Grafiati
Published: 14 March 2023

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Journal articles on the topic "Electro-hydrostatic actuation"

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Wang, Tianyi, Zongxia Jiao, and Liang Yan. "Efficiency analysis of moving-magnet linear oscillating motor with dual-resonance for linear electro-hydrostatic actuator." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 231, no. 13 (November 25, 2016): 2487–501. http://dx.doi.org/10.1177/0954410016677332.

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More-electric aircraft draws considerable attention due to its high efficiency, high reliability, and easy maintenance. Linear electro-hydrostatic actuator is a novel linear actuation system suitable for more-electric aircraft, and offers many advantages over traditional rotary electro-hydrostatic actuator. However, it requires high-frequency reciprocate actuation of linear oscillating motors with both high efficiency and high power factor. In this study, a novel moving-magnet tubular linear oscillating motor with dual-resonance is proposed for linear electro-hydrostatic actuator applications to achieve high efficiency and high power factor simultaneously. Firstly, system impedance model is set up analytically, which helps to analyze the influence of structure parameters on system performance. Based on this model, working efficiency and power factor are compared with the nonresonance design, and validated by experimental results. In order to take real scenario into considerations, the nonlinearity of motor and rectangular-type load is also analytically derived and analyzed with effective resonant frequency tracking method proposed. It shows that dual-resonance design does increase system efficiency and power factor, and can be applied in linear electro-hydrostatic actuator system for more-electric aircraft effectively.
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Yu, Li Ming, Shou Qiang Wei, Tian Tian Xing, and Hong Liang Liu. "Reliability Analysis of Hybrid Actuation Based on GSPN." Advanced Materials Research 430-432 (January 2012): 1914–17. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.1914.

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Generalized stochastic Petri nets is adopted to develop the reliability models of two operating modes of the hybrid actuation system, which is composed of a SHA (Servo valve controlled Hydraulic Actuator), an EHA (Electro-Hydrostatic Actuator) and an EBHA (Electrical Back-up Hydrostatic Actuator).The dependability of hybrid actuation is got through the Markov chain which the Petri nets sate is isomorphic to and the Monte-Carlo simulation. Simulations are conducted to analyze influences of the operating mode and the fault coverage on system reliability of hybrid actuation system.
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Jiang, Ji Hai, Qiao Liu, Jun Long Liu, and Zhen Xiu Hou. "Performance Comparison of Displacement and Speed Control in Electro-Hydrostatic Actuator." Applied Mechanics and Materials 779 (July 2015): 205–11. http://dx.doi.org/10.4028/www.scientific.net/amm.779.205.

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In recent years, power by wire (PBW) technique is developed in the European and American aviation field, and one of its important bases is electro-hydrostatic servo technique. In this paper, speed controlled and displacement controlled electro-hydrostatic actuation systems are modeled and simulated, by comparing their Bode graphics and time-zone respond curves, which shows that displacement control has small load inertia and high gain, so its dynamic performance is better. Thus, conclusion can be drawn that speed-displacement composite control may indeed improve the dynamic performance of electro-hydrostatic actuator.
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Wang, Zhenyu, Yuchuan Zhu, Renqiang Li, Cheng Liu, and Niyomwungeri Bruno. "Development of a dual magnetostrictive material rods–based electro-hydrostatic actuator." Journal of Intelligent Material Systems and Structures 30, no. 13 (May 16, 2019): 1871–81. http://dx.doi.org/10.1177/1045389x19849247.

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Recently, the use of smart material–based electro-hydrostatic actuators is increasingly becoming more attractive to overcome the inherent disadvantages of conventional actuation systems and to offer new opportunities for performance improvement. A new type of a dual magnetostrictive material rods–based electro-hydrostatic actuator is presented in the current study. An active rotary rectification valve is utilized to convert small, high-frequency vibration displacements of the magnetostrictive material rods into continuous, smooth and bidirectional motion of a hydraulic cylinder by fluid rectification. Simulation and experiments were performed to confirm the feasibility of the new concept. The experimental results indicate that the dual magnetostrictive material rods–based electro-hydrostatic actuator exhibits a maximum flow rate that is approximately twice that of a single magnetostrictive material rod–based electro-hydrostatic actuator, and that the operating frequency increases from 110 to 150 Hz.
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Navatha, A., Kiran Bellad, Somashekhar S. Hiremath, and S. Karunanidhi. "Dynamic Analysis of Electro Hydrostatic Actuation System." Procedia Technology 25 (2016): 1289–96. http://dx.doi.org/10.1016/j.protcy.2016.08.223.

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Wang, Bin, Nanyue Xu, Pengyuan Wu, and Rongfei Yang. "Simulation on an electro-hydrostatic actuator controlled by a high-pressure piezoelectric pump with a displacement amplifier." Assembly Automation 41, no. 4 (May 28, 2021): 413–18. http://dx.doi.org/10.1108/aa-04-2020-0054.

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Purpose The purpose of this paper is to provide a new hydrostatic actuator controlled by a piezoelectric piston pump and to reveal its characteristics. Design/methodology/approach In this paper, a piezoelectric pump with passive poppet valves and hydraulic displacement amplifier is designed as a new control component in a hydrostatic actuator for high actuation capacity. A component-level mathematical model is established to describe the system characteristics. Simulation verification for cases under typical conditions is implemented to evaluate the delivery behavior of the pump and the carrying ability of the actuator. Findings By using the displacement amplifier and the passive distributing valves, simulation demonstrates that the pump can deliver flow rate up to 3 L/min, and the actuator controlled by this pump can push an object weighing approximately 50 kg. In addition, it is particularly important to decide a proper amplification ratio of the amplifier in the pump for better actuation performance. Originality/value The piezoelectric pump presented in this paper has its potential to light hydrostatic actuator. The model constructed in this paper is valid for characteristic analysis and performance evaluation of this pump and actuators.
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Zhao, Jia, Kai Chang, Fen Ru, Yan Xie, and Wei Li. "Design and Verification of an Electro Hydrostatic Brake System." Journal of Physics: Conference Series 2228, no. 1 (March 1, 2022): 012020. http://dx.doi.org/10.1088/1742-6596/2228/1/012020.

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Abstract Electro-Hydraulic Actuation is a distributed power telex technology which integrates machine, electricity and liquid as one. A miniaturized Electro-Hydraulic Brake System is designed by introducing Electro-Hydraulic Actuation Technology into aircraft Anti-skid Brake System. It can transmit power by electricity in brake system. Firstly, the mathematical model of the Electro-Hydraulic Braking System is established. Secondly, the semi physical simulation of the hardware in the loop is completed in the real-time simulation platform to verify the anti-skid braking control function of the system, realize the parameter optimization process, and determine the important parameters, so as to provide guidance for the production of the sample. Finally, the correctness and function of the Electro-Hydraulic Brake System are verified by the test on the inertial platform. The results show that the system can achieve the expected anti-skid braking function, and can provide support for subsequent engineering.
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Lu, Jiayu, Chaofan Gu, Yanjun Zhao, Cao Tan, Yingtao Lu, and Changzhong Fu. "Refined Modeling Method and Analysis of an Electromagnetic Direct-Drive Hydrostatic Actuation System." Actuators 11, no. 10 (September 30, 2022): 281. http://dx.doi.org/10.3390/act11100281.

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The hydrostatic actuation system based on linear actuators improves the complex piston force and long transmission path of the traditional electro-hydrostatic actuator (EHA). However, new nonlinear factors in the linear actuator and direct-driven piston are introduced into the system, which present challenges to system modeling and control. To improve the accuracy of system performance prediction, this paper analyzed the working characteristics of an electromagnetic direct-drive hydrostatic actuation system (EDHAS). A dynamic model of the electromagnetic linear actuator including the LuGre friction model was established. The high-pressure internal leakage of the direct-drive pump was described by an inclined eccentric leakage model. The Karnopp friction model was applied to solve the problem of switching between viscous and sliding friction in a cylinder. The hydraulic components model was established based on AMESim, and the electromagnetic linear actuator model and the system controller model were established in Matlab/Simulink, to establish a refined electromechanical–hydraulic co-simulation model of the EDHAS with electromagnetic, mechanical, hydraulic, and control coupling. A system performance test platform was built. The simulation results of the direct-drive piston displacement, the system pressure, the system flow rate, and the cylinder displacement match well with experimental results, which verifies the validity and accuracy of the refined modeling method.
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Li, Yang, Zongxia Jiao, and Zimeng Wang. "Design, Analysis, and Verification of an Electro- Hydrostatic Actuator for Distributed Actuation System." Sensors 20, no. 3 (January 23, 2020): 634. http://dx.doi.org/10.3390/s20030634.

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In order to provide a simplified and low-cost solution of the terminal for a distributed actuation system, this paper proposes an electro-hydrostatic actuator (EHA) based on the linear drive principle. The proposed actuator is directly driven by a linear pump with a collaborative rectification mechanism, whose performance relies on the collaboration of the internal two units. A pair of linear oscillating motors are employed to drive the two pump units respectively. The control of the actuator is based on the modulation of the oscillating amplitude, frequency, and phase difference of the two motors. The advantage of this actuator is that no more valve control is needed to rectify the linear pump besides the high efficiency of the direct pump drive. In this paper, both schematic and detailed structure of the actuator is presented. The kinematic and dynamic characteristics are analyzed and modeled, based on which the control method is proposed. The experiments verify the validity of the actuator structure and control.
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Jawaid, Syed Imran, and Liang Wang. "EHA System Integration Design Analysis and Position Tracking Performance by PID Controller." Applied Mechanics and Materials 419 (October 2013): 826–34. http://dx.doi.org/10.4028/www.scientific.net/amm.419.826.

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Electro-hydraulic actuation is now an emerging and well established technology and currently applicable in almost all fields but most important application of electro-hydrostatic actuator (EHA) is aerospace industry. This paper will discuss the selection and designing of major sub-assemblies and their integration to form an EHA unit. A complete, compact, and high performance EHA will be designed in different sections of paper and dynamic analysis of major assemblies is carried out to meet the designed requirements. In last section position tracking performance of the EHA is analysed by using a conventional PID Controller and simulation results are discussed.
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Dissertations / Theses on the topic "Electro-hydrostatic actuation"

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GALLUZZI, RENATO. "Vibration Damping Using Electro-Hydrostatic Actuation Technology." Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2542506.

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Vibration damping finds its application in almost any system or structure subject to oscillatory excitations. Vehicles, or better, the intrinsic nature of the environments that surround and interact with them demand certain degree of adaptability of the vehicle subsystems to a wide range of working conditions. This requirement, together with the fast development of electronics and motion transducers, leads to the interesting possibility of designing and implementing adaptive damping devices. In a context where technological alternatives are numerous, the present dissertation explores the potentialities and limitations of the electro-hydrostatic actuation (EHA) technology as a vibration suppression device. For this purpose, the case study of the lead-lag motion damping of a rotorcraft blade is proposed. Thus, the workflow of the thesis introduces modeling and design aspects that can be applied to any EHA damping application. Considerations about power consumption and technology limitations are covered as well. Then, after a brief introduction to the lead-lag damping phenomenon, the design of the adaptive damper is carried out. This phase yields an off-the-shelf component prototype and a custom EHA damper that integrates all the components in a single manifold. Finally, both devices are tested in an experimental context to assess the validity of the solution for the selected application.
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TESSARI, FEDERICO. "Development of a knee prosthesis powered by electro-hydrostatic actuation." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2932755.

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Reidl, Tim, Jürgen Weber, and Steffen Ihlenfeldt. "Investigation of energy management topologies for forming presses with electro hydrostatic drivetrains." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71190.

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Recent Power On Demand approaches, realized by using speed and/or displacement variable pump units, led to a significant increase of energy efficiency on hydraulic forming presses. In this paper we follow up on this development by laying the focus on the energy management and storage design of such machinery. With a derived fluidtronical model, we compare five different topologies that supply and manage the power flow for a forming press with die cushion. Our evaluation criteria are: energy consumption, minimization of the infeed power, and qualitative costs. For a representative forming cycle, the losses occurring on each of the drivetrain components and the power electronics accessory are derived in detail. We expect that this research will lead to deeper investigation of more intelligent energy management systems that use multiple storages in an optimal way and further learn and adapt during operation.
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Seung, Taehun. "Holistic-Lightweight Approach for actuation systems of the next generation aircraft." Universitätsverlag Chemnitz, 2017. https://monarch.qucosa.de/id/qucosa%3A34400.

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Currently the system development of aircraft engineering concentrates its focus on the reduction of energy consumption more than ever before. As a consequence, the efficiency of subsystems inside the aircraft is highlighted. According to previous investigations the simplification/unification of conventional multifaceted board energy systems by means of electric power management is the most promising way concerning aircraft global efficiency improvement. The main aim of the present work was to optimize a multi-device, heavy duty EHA-System by introducing of a comprehensive perspective. In order to achieve the final, non-plus-ultra improvement level, the attributes of architecture, hardware and operation method were combined in an interactive manner, whereas particular attention has been paid to the mutual enhancing influences. The maximum reduction of losses, the minimizing of consumption and weight optimization can be achieved concurrently when the physical coherences between the involved subsystems are understood and their hidden potentials are exploited. This can only be achieved in one way and the detail follows: The most effective way to reduce both manufacturing effort and weight is to introduce a multiple-allocation philosophy. The highest reliability possible can be achieved by novel cascade-nested system architecture and strict restraining of the control logic. By employing an ultra-low-loss hardware concept, the energy efficiency can be maximized at a necessary minimum own weight. Last but not least, possibly the most important cognition is that an intelligent operation method will improve the actual system and influence the entire system positively and with a lower effort. The final conclusion is that the only and reasonable way to achieve an ultimate optimized solution of an actuation system is an all-encompassing consideration. Eventually it was to recognize that the final result is nothing but ultimate lightweight architecture, i.e. a non-plus-ultra solution.
Gegenwärtig konzentriert sich die Technologieentwicklung für Flugzeuge auf die Reduktion des Energieverbrauchs mehr denn je zuvor. Hierfür ist die Effizienz der an Bord befindlichen, nicht propulsiven Subsysteme neben der Wirkungsgradverbesserung der Triebwerke von zentraler Bedeutung. Laut vorangegangenen Untersuchungen und Studien ist die Vereinfachung bzw. Vereinheitlichung der Vielfalt der konventionellen Bordenergiesysteme durch ein adäquates Energiemanagement unter Verwendung von Elektrizität der aussichtsreichte Weg zur Effizienzverbesserung auf der Gesamtflugzeugebene. Durch die Elektrifizierung wurden die einzelnen Geräte zwar zuverlässiger und energieeffizienter als je zuvor aber gleichzeitig erheblich schwerer, sodaß ein signifikanter Verlust an Nutzlasten auf Gesamtflugzeugebene hervorgerufen wird. Das Hauptziel der vorliegenden Arbeit war es, ein Schwerlast-EHA-System mit mehrfachen Betätigungseinheiten durch Einführung von umfassenden Perspektiven zu optimieren. Durch Einführung der sog. ganzheitlichen Leichtbauweise demonstriert die Arbeit, wie das Subsystem mit mehreren Endgeräten ultimativ optimiert werden kann, ohne Abstriche an Gewichtsbilanz u/o Kompromiß mit der Energieeffizienz zu machen. Um eine wahrhaftige Optimierung, d.h. die Erreichung des ultimativen, Nonplusultra-Verbesserungslevels zu erreichen, wurden die Systemarchitektur, die Hardware und die Operationsmethode interaktiv kombiniert, wobei die besondere Aufmerksamkeit auf die interaktiven, zur Verbesserung führenden Einflüsse gelegt wurde. Die Minimierung des Energieverbrauchs und die ultimative Gewichtsoptimierung gleichzeitig können erreicht werden, wenn die physikalischen Zusammenhänge zwischen den involvierten Subsystemen verstanden und ihre verborgenen Potentiale ausgenutzt werden. Der einzige und vernünftige Weg zur Erreichung der ultimativen Optimierung eines Betätigungssystems ist eine allumfassende Betrachtung, also eine ganzheitliche Betrachtungs- bzw. Vorgehensweise.
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Júnior, Francival Barbosa. "Analysis of electro-hydrostatic actuator in more electric aircraft." Instituto Tecnológico de Aeronáutica, 2006. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=900.

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The aim of this dissertation is to evaluate the possibility of using electrically powered systems instead of a centralized hydraulic system composed of set of distribution pipes for aircrafts' primary control surfaces actuation. Focus will be given in the following topics: Description of new actuation technologies; Option chosen to be studied among the new possibilities; Comparison between the traditional system and the new proposal e System engineering evaluation regarding: weight, safety, thermal issue, connection with electric system, maintenance and certification. Besides that, a more electric actuation architecture will be proposed and compared with the conventional option for an airplane design's case study. A simulation model will be developed to describe the more electric actuator behavior and preview its interaction with other systems. This model will be included in a closed loop to command a primary surface. The closed-loop project will be developed based on an algorithmic method. A Genetic Algorithm (GA) will be implemented to define the gains. Finally, the results obtained will be discussed.
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Duarte, da Silva João Pedro, Amadeu Plácido Neto, Negri Victor Juliano De, and Alexandre Orth. "Experimental evaluation of an electro-Hydrostatic actuator for subsea applications in a hyperbaric chamber." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71079.

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A novel Electro-Hydrostatic Actuator (EHA) prototype – designed to operate on subsea gate valves in deep and ultra-deep water – is analysed and qualified in terms of functionality under design and normative constraints. The prototype is assembled in a test bench for load control in a hyperbaric chamber where the high subsea environmental pressure can be emulated. The process variables under evaluation are monitored through a set of pressure and position sensors, which are part of the prototype design. The experimental results demonstrate a robust behaviour of the actuator concerning the imposed external pressure and load forces even with a forced limitation in its power input. Moreover, the prototype performs consistently throughout the entire endurance trial, asserting high reliability. With the results obtained, the subsea EHA concept is effectually eligible to a technology readiness level 4, according to the API 17N.
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Vaezi, Tahere, Mohamed Smaoui, Paolo Massioni, Xavier Brun, and Eric Bideaux. "Nonlinear force tracking control of electrohydrostatic actuators submitted to motion disturbances." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71092.

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In some industrial fields, such as aerospace, electro-hydrostatic actuators (EHAs) are increasingly used to replace conventional standard hydraulic actuators due to their better energy performance. Moreover, implementing different type or technology of actuators in redundant actuation systems working on the same moving part introduced some new challenges. This paper presents a force-tracking controller for an asymmetric electro-hydrostatic actuator that is submitted to an external motion generated by an external source. In this case, the rod displacement is considered as an external disturbance for the hydraulic cylinder, but it is assumed that this disturbance can be easily measured using sensors. The theoretical motivation of this work is discussed along and a variable gain state feedback control based on Linear Parameter Varying control (LPV) theory is proposed to achieve stability, disturbance rejection and tracking performance. The Linear Matrix Inequalities (LMI) framework is used to determine a control law including an augmented state feedback with an integral action that reduces trajectory-tracking errors. Simulation results of the control law are finally given to verify the global performance of this control design.
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Books on the topic "Electro-hydrostatic actuation"

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Navarro, Robert. Performance on an electro-hydrostatic actuator on the F-18 systems research aircraft. Edwards, Calif: National Aeronautics and Space Administration, Dryden Flight Research Center, 1997.

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Navarro, Robert. Performance of an electro-hydrostatic actuator on the F-18 systems research aircraft. Edwards, Calif: National Aeronautics and Space Administration, Dryden Flight Research Center, 1997.

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Navarro, Robert. Performance of an electro-hydrostatic actuator on the F-18 systems research aircraft. Edwards, Calif: National Aeronautics and Space Administration, Dryden Flight Research Center, 1997.

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Book chapters on the topic "Electro-hydrostatic actuation"

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Kotagond, Aravindkumar D., Somashekhar S. Hiremath, and M. A. Kamoji. "Reliability of Different Loads on Electro Hydrostatic Actuator." In ICRRM 2019 – System Reliability, Quality Control, Safety, Maintenance and Management, 67–72. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8507-0_11.

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Song, Jixin, Liming Yu, Xudong Han, and Jian Fu. "Modeling and Simulation of Redundancy Management of Electro-Hydrostatic Actuator." In Lecture Notes in Electrical Engineering, 542–51. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8458-9_58.

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Yu, Hui, Jiehua Zhou, Xudong Han, Liming Yu, and Jian Fu. "Model-Based Fault Diagnosis Method for Aerospace Electro-Hydrostatic Actuator." In Lecture Notes in Electrical Engineering, 476–84. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-6320-8_49.

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Yan, Xudong, Liming Yu, Junlin Pan, Jian Fu, and Yongling Fu. "Control Dynamic Performance Analysis of a Novel Integrated Electro Mechanical Hydrostatic Actuator." In Lecture Notes in Electrical Engineering, 2563–73. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3305-7_206.

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Kaminaga, Hiroshi, Tianyi Ko, Ryo Masumura, Mitsuo Komagata, Shunsuke Sato, Satoshi Yorita, and Yoshihiko Nakamura. "Mechanism and Control of Whole-Body Electro-Hydrostatic Actuator Driven Humanoid Robot Hydra." In Springer Proceedings in Advanced Robotics, 656–65. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50115-4_57.

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Tessari, Federico, Renato Galluzzi, Nicola Amati, Andrea Tonoli, Matteo Laffranchi, and Lorenzo De Michieli. "Design and Testing of a Fully-Integrated Electro-Hydrostatic Actuator for Powered Knee Prostheses." In Biosystems & Biorobotics, 95–100. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69547-7_16.

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Yan, Xudong, Liming Yu, Jiang’ao Zhao, Jian Fu, and Yongling Fu. "Hierarchical Modelling and Simulation of a Novel Integrated Electro-Mechanical Hydrostatic Actuator Based on Bond Graph." In Proceedings of 2018 Chinese Intelligent Systems Conference, 603–14. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2291-4_59.

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Conference papers on the topic "Electro-hydrostatic actuation"

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Kaminaga, Hiroshi, Tomoya Amari, Yukihiro Katayama, Junya Ono, Yuto Shimoyama, and Yoshihiko Nakamura. "Backdrivability analysis of Electro-Hydrostatic Actuator and series dissipative actuation model." In 2010 IEEE International Conference on Robotics and Automation (ICRA 2010). IEEE, 2010. http://dx.doi.org/10.1109/robot.2010.5509789.

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Mandal, Nimai Pada. "PID Control of a Fixed Displacement Electro-Hydrostatic Actuation System." In 2020 International Conference on Emerging Frontiers in Electrical and Electronic Technologies (ICEFEET). IEEE, 2020. http://dx.doi.org/10.1109/icefeet49149.2020.9186961.

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Dong, D., X. Wang, X. Tian, S. Wang, Y. Wei, and A. I. Gavrilov. "Damping linearization of ankle prosthesis based on electro-hydrostatic actuation." In CSAA/IET International Conference on Aircraft Utility Systems (AUS 2022). Institution of Engineering and Technology, 2022. http://dx.doi.org/10.1049/icp.2022.1727.

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Li, Qian, Shaoping Wang, Jian Shi, Xingjian Wang, and Zongxia Jiao. "Reliability modeling analysis for hydraulic/electro-hydrostatic dual redundant actuation system." In 2014 IEEE Chinese Guidance, Navigation and Control Conference (CGNCC). IEEE, 2014. http://dx.doi.org/10.1109/cgncc.2014.7007601.

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Seo, Hyung-Tae, Dae-Gyeom Kang, Yun-Pyo Hong, Kyung-Soo Kim, Jae-Kwan Ryu, and Junsik Lee. "Combined feedforward/disturbance observer-based control of pump-controlled electro-hydrostatic actuation system." In 2016 16th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2016. http://dx.doi.org/10.1109/iccas.2016.7832392.

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Lei, P., S. Cao, and Y. Wang. "Analysis and research on dynamic characteristics and stability of electro-hydrostatic actuation system." In CSAA/IET International Conference on Aircraft Utility Systems (AUS 2020). Institution of Engineering and Technology, 2021. http://dx.doi.org/10.1049/icp.2021.0378.

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Habibi, S. R., V. Pastrakuljic, and A. A. Goldenberg. "Model Identification of a High Performance Hydrostatic Actuation System." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1982.

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Abstract An advanced hydrostatic actuation system referred to as the Electro Hydraulic Actuator (EHA) has been designed and prototyped. The prototype of EHA exhibits a very high level of dynamic performance and positional accuracy. EHA’s positional accuracy with a simple outer-loop proportional controller equals its optical position-encoder resolution of 10 Micron. In this paper, a linearized mathematical model of EHA is derived and used as a basis for model identification. Open loop experiments and numerical optimization are used for tuning some of the unknown model parameters and for quantifying their influence. The resulting model is validated and matches closely the measured response.
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Schraft, Jacques Philippe, Dirk Becher, and Jürgen Weber. "Condition Monitoring Strategy for Pump-Driven Hydraulic Axes." In BATH/ASME 2020 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fpmc2020-2757.

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Abstract Electrohydrostatic Actuation Systems (EAS) are characterized by an Electrohydrostatic Pump Unit (EPU) that directly drives a hydraulic actuator. This motion concept combines both advantages of traditional electro-mechanical actuation and electro-hydraulic actuation like high energy efficiency, environmental cleanliness, low noise emission, high force output, and no backslash. In modern IoT/I4.0 environments, the utilization of digital data plays a more and more important role such as histories of sensor data, of working cycles, or of the machine health status. In the example of an EAS, a way is shown to monitor the health status of the integrated hydrostatic machine along with the hydraulic part of such an EAS. The approach described in this paper uses the already existing sensors in an EAS, so no additional hardware is necessary. Based on a model describing the volumetric behaviour of the hydrostatic machine a volumetric health index is developed by introducing a re-normalized efficiency. The proposed methodology is independent on the overall working cycle and is therefore applicable to already running systems or systems with varying working cycle. The calculated Health Index offers the opportunity to monitor the hydrostatic machine as the key element of such an EAS in real time and in a non-invasive and continuous way.
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Huang, Xiaoyan, Keith Bradley, Andrew Goodman, Chris Gerada, Pat Wheeler, Jon Clare, and Chris Whitley. "Fault-Tolerant Brushless DC Motor Drive For Electro-Hydrostatic Actuation System In Aerospace Application." In Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting. IEEE, 2006. http://dx.doi.org/10.1109/ias.2006.256562.

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10

Komagata, Mituso, Tianyi Ko, and Yoshihiko Nakamura. "Small Size Hydraulic Pumps with Low Heat Generation for Electro Hydrostatic Actuation of Humanoid Robots." In 2018 IEEE-RAS 18th International Conference on Humanoid Robots (Humanoids). IEEE, 2018. http://dx.doi.org/10.1109/humanoids.2018.8625055.

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