Relevant bibliographies by topics / Servo Electro-Hydraulic actuator

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Servo Electro-Hydraulic actuator'

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Published: 25 May 2024

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Journal articles on the topic "Servo Electro-Hydraulic actuator"

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Wang, Xin Ge, Lei Li, Xiu Ling Wei, Gui Qin Chen, and Bing Feng Liu. "Electro-Hydraulic Servo Actuator Fuzzy Self-Tuning PID Control Research." Applied Mechanics and Materials 607 (July 2014): 795–98. http://dx.doi.org/10.4028/www.scientific.net/amm.607.795.

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According to the different working state of electro-hydraulic servo actuator servo system, the design parameter self-tuning three-dimensional fuzzy controller, the automatic setting of 3 d quantization factor and scaling factor of the fuzzy controller, the fuzzy control system can enhance the ability to adapt and tracking performance, improve the quickness of electro-hydraulic servo actuator servo system, reduces the overshoot of the electro-hydraulic servo actuator servo system, and rapidity and control accuracy to meet the electro-hydraulic servo actuator servo system dynamic performance and static performance requirements.
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Wang, Xin Ge, Lei Li, Hui Ling Han, Xiu Ling Wei, Mao Dian An, and Bing Feng Liu. "Electro-Hydraulic Servo Actuator Parameters Self-Tuning Three-Dimensional Fuzzy Control Research." Applied Mechanics and Materials 607 (July 2014): 811–14. http://dx.doi.org/10.4028/www.scientific.net/amm.607.811.

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According to the different working state of electro-hydraulic servo actuator servo system, the design parameter self-tuning three-dimensional fuzzy controller, the automatic setting of three-dimensional fuzzy controller quantization factor and scaling factor, enhance the adaptability of fuzzy control system and tracking performance, and improve the quickness of electro-hydraulic servo actuator servo system, reduce the overshoot, the rapidity and precision meet the electro-hydraulic servo actuator control servo system dynamic performance and static performance requirements. 1.Parameter self-tuning three-dimensional fuzzy controller scheme
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WOS, Piotr, and Ryszard DINDORF. "BRAIN-COMPUTER INTERFACE FOR CONTROL OF ELECTRO–HYDRAULIC SERVO DRIVE." Journal of Machine Engineering 18, no. 4 (November 30, 2018): 86–95. http://dx.doi.org/10.5604/01.3001.0012.7635.

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The aim of the study was to perform bioelectric signal analysis focusing on its applicability to control of the electro-hydraulic servo drive. The natural bioelectric signals generated by brain, facial muscles and eye muscles read by the NIA (Neural Impulse Actuator) are translated into control commands in the controller of electro-hydraulic servo drive. Bioelectric signals detected by means of special forehead band with three sensors are sent to the actuator box, where they are interpreted as control signals. The test stand was constructed to control of the electro-hydraulic servo drive by means of bioelectric signals generated by the operator. The control signals from the actuator box are transmitted via a wireless network to the controller of electro-hydraulic positioning drive.
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Milecki, Andrzej, Arkadiusz Jakubowski, and Arkadiusz Kubacki. "Design and Control of a Linear Rotary Electro-Hydraulic Servo Drive Unit." Applied Sciences 13, no. 15 (July 26, 2023): 8598. http://dx.doi.org/10.3390/app13158598.

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In this paper, a new solution for an electro-hydraulic servo drive is proposed, which consists of two electro-hydraulic servo drives: one with a hydraulic cylinder and one with a hydraulic rotary motor. In the proposed drive, the linear actuator is attached to a horizontal base and the hydraulic motor is mounted on the actuator piston rod. Thus, the output signal of the drive is the lifting and lowering of the element suspended on the rope. The paper describes the structure, kinematics, dynamics, and control of a novel electro-hydraulic servo drive. A servo valve and a proportional valve are used to control the flow of the hydraulic cylinder and the hydraulic motor. Special attention is paid to the construction of two actuators in one drive unit. The controller is based on the PLC controller. The measuring system uses laser displacement sensors and an encoder. The results of laboratory investigations are discussed in the paper. The proposed drive contains all of the characteristics of a mechatronic device. The main contribution of this study is the proposal of the controller architecture and the algorithm to control the speed and position when lifting or lowering loads.
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Xu, Bing, Hong Li Wang, Fu Li Liu, and Yuan Zheng. "Design of Interface Connecting PC/104 Based Electro-Hydraulic Servo Actuator & CAN Bus." Applied Mechanics and Materials 427-429 (September 2013): 797–801. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.797.

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In order to connect electro-hydraulic servo actuator to CAN network, one interface is designed for connecting electro-hydraulic servo actuator to CAN network. In this article, the author expounds design thinking and realization method for interface hardware and software. The card is applied in practice, and the practice proves the feasibility of the design method.
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Su, Wen Hai, and Ji Hai Jiang. "Direct Drive Volume Control Electro-Hydraulic Servo Ship Rudder." Key Engineering Materials 439-440 (June 2010): 1388–92. http://dx.doi.org/10.4028/www.scientific.net/kem.439-440.1388.

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Direct drive volume control（DDVC）electro-hydraulic servo system has synthesized the advantages of high power of hydraulic system and flexible control of the motor. It also has other features such as energy saving, high efficiency, small bulk and high reliability. On the background for application to the ship steering system, DDVC electro-hydraulic servo system for the control actuator of ship is designed and the mathematic model is made and simulated with Matlab/Simulink. The steering gears closed-loop system’s simulation obtained the perfect dynamic performances; verify the correctness of the design with its control strategy. It can satisfy the ships request of boat to steering gears system and the DDVC electro-hydraulic servo system will be a extensive prospective power equipment of the control actuator of ship in future.
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Ur Rehman, Waheed, Xingjian Wang, Zeeshan Hameed, and Muhammad Yasir Gul. "Motion Synchronization Control for a Large Civil Aircraft’s Hybrid Actuation System Using Fuzzy Logic-Based Control Techniques." Mathematics 11, no. 7 (March 24, 2023): 1576. http://dx.doi.org/10.3390/math11071576.

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The motion synchronization of the hybrid actuation system (composed of a servo-hydraulic actuator and an electro-mechanical actuator) is very important for all applications, especially for civil aircraft. The current research presents a nested-loop control design technique to synchronize motion between two different actuators, such as a servo-hydraulic actuator (SHA) and an electro-mechanical actuator (EMA). The proposed strategy consists of a trajectory, an intelligent position controller (fuzzy logic-based controller), a feed-forward controller, and an intelligent force controller (fuzzy logic-based controller). Position, speed, and acceleration signals are produced by trajectory at a frequency that both SHA and EMA can follow. The SHA/EMA system’s position tracking performance is enhanced by the feed-forward controller and intelligent position controller working together, while the intelligent force tracking controller lowers the issue of force fighting by focusing on the rigid coupling effect. To verify the effectiveness of the proposed strategy, simulations are performed in the Matlab/Simulink environment. The result shows that the proposed intelligent control strategy not only reduces initial force fighting, but also improves load-rejection performance and output-trajectory tracking performance.
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Yu, Li Ming, and Zi Qing Ye. "Research on Performances of Hybrid Actuation System with Dissimilar Redundancies." Advanced Materials Research 430-432 (January 2012): 1559–63. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.1559.

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Hybrid actuation system (HAS) with dissimilar redundancies conforms to the development trend of future actuation systems in more electric aircraft (MEA). Hybrid Actuation system is composed of a traditional servo valve controlled hydraulic actuator (SHA) and an electro-hydraulic actuator (EHA). It has two operating models, active/passive mode (A/P) and active/active mode (A/A). In A/A model both actuators are actively controlled. Corresponding to A/A model, SHA is actively controlled and EHA is passively controlled in A/P model. The hybrid actuation system is built in the AMESim simulation environment, comparative analysis is performed when system operates in these two modes, such as signal response and force fighting. The simulation results provide a guideline to determine the specific operating mode of the system in different circumstances.
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Yamada, Hironao, Shigeki Kudomi, Yoshinori Niwa, and Takayoshi Muto. "Development of a Hydraulic Force-Display (Application to One-DOF Master-Slave Control)." Journal of Robotics and Mechatronics 15, no. 1 (February 20, 2003): 39–46. http://dx.doi.org/10.20965/jrm.2003.p0039.

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In this study, we deal with a bilateral master-slave system for tele-robotics composed of electro-hydraulic servo-systems. In a teleoperated master-slave system, the master has to play two roles, firstly as a reference input device to the slave and secondly as a force display device. In order to produce a force display composed of hydraulic servo-systems, we must solve a problem called back-drivability, in which the actuator in a hydraulic servo-system cannot be operated freely by manual means. As a practical solution to this problem, we propose a driving method for the actuator that uses a force sensor attached to the actuator Furthermore, as an application of the proposed force display, we construct a bilateral master-slave system coposed of electro-hydraulic servo-systems. Experimental results of the manipulate on of motion by this system are presented and, consequently, the validity of the hydraulic force-display was confirmed.
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Yu, Yang, and Bo Qiang Shi. "Design and Simulation of Direct Drive Volume Control Actuator." Applied Mechanics and Materials 155-156 (February 2012): 162–66. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.162.

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The electro-hydraulic actuator which was designed based on the technology of the direct drive volume control, has the advantages of small volume, high reliability, energy saving and so on, and can effectively overcome the deficiency of traditional valve control electro-hydraulic actuator. This paper realizes co-simulation of direct drive volume control actuator (DDVCA) by using AMESim and Matlab/Simulink. The simulation results show that DDVCA has the characteristics of smooth operation, fast response speed, high control accuracy. Therefore, DDVCA can replace traditional servo valve electro-hydraulic actuator in the case of low frequency response requirement.
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Dissertations / Theses on the topic "Servo Electro-Hydraulic actuator"

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Abdulmalek, Ghiath. "Electronics and Control Development of Servo Electro-Hydraulic Actuators (SEHA)." Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPAST224.

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Les robots humanoïdes incarnent un lien singulier entre l'ingénierie, la technologie et les aspirations humaines. Cependant, leur progression pose des défis complexes au-delà des aspects techniques, englobant des considérations fondamentales telles que les besoins énergétiques, les capacités de détection et les algorithmes de contrôle sophistiqués. Les actionneurs, véritable cœur de ces machines, jouent un rôle crucial en permettant des mouvements précis et en mimant la complexité des muscles et des articulations humaines. L'actuateur servo-électrohydraulique (SEHA), une proposition innovante de Samer ALFAYAD et al., représente un tournant majeur en générant de manière autonome de l'énergie hydraulique et en renforçant la sécurité des interactions humaines par la compensation de la force d'asservissement. La mise en œuvre de SEHA nécessite une intégration de composants clés, conduisant à la création de la startup KALYSTA, soutenue par la SATT-Paris Saclay. Cette thèse explore la dimension électronique des actionneurs, cherchant à inaugurer une ère nouvelle de technologies d'actuation pour des robots plus performants et sécurisés. À travers SEHA et les innovations de KALYSTA, elle aspire à catalyser le développement de robots avancés pour diverses applications, ouvrant ainsi des perspectives prometteuses dans le domaine de la robotique humanoïde
Humanoid robots embody a unique connection between engineering, technology, and human aspirations. However, their advancement poses complex challenges beyond technical aspects, encompassing fundamental considerations such as energy requirements, detection capabilities, and sophisticated control algorithms. Actuators, the true core of these machines, play a crucial role in enabling precise movements and mimicking the complexity of human muscles and joints. The servo- electrohydraulic actuator (SEHA), an innovative proposal by Samer ALFAYAD et al., represents a significant breakthrough by autonomously generating hydraulic energy and enhancing the safety of human interactions through force feedback compensation. Implementing SEHA requires the integration of key components, leading to the establishment of the startup KALYSTA, supported by SATT-Paris Saclay. This thesis explores the electronic dimension of actuators, aiming to usher in a new era of actuation technologies for more efficient and secure robots. Through SEHA and KALYSTA's innovations, it aspires to catalyze the development of advanced robots for various applications, promising exciting prospects in the field of humanoid robotics
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Wang, Lijian. "Force equalization for active/active redundant actuation system involving servo-hydraulic and electro-mechanical technologies." Thesis, Toulouse, INSA, 2012. http://www.theses.fr/2012ISAT0038/document.

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L'évolution vers les avions plus électriques engendre des efforts importants pour développer des actionneurs à source de puissance électrique pour les commandes de vol. Pour de telles applications critiques, il est peut être intéressant dans le futur d'associer à une même surface de contrôle un actionneur conventionnel à source de puissance hydraulique et un actionneur à source de puissance électrique mais ceci pose un problème important lorsque les deux actionneurs sont actifs simultanément: comme chacun essaye d'imposer sa position à l'autre,les deux actionneurs luttent l'un contre l'autre en développant des efforts néfastes qui ne sont pas utilisés par la charge. L'objet du présent travail est de proposer des stratégies d’égalisation d’effort pour un système d'actionnement impliquant ces deux types d''actionneurs opérant en mode actif-actif. La première étape est de concevoir leur commande en position et de la valider sur banc d'essai. Un banc d'essai virtuel fidèle à la réalité est ensuite réalisé dans l'environnement de simulation AMESim pour pouvoir évaluer facilement les différentes stratégies d'égalisation d'effort entre les deux actionneurs. Ces stratégies sont proposées et évaluées virtuellement en deux étapes, statique puis dynamique. Pour finir, une étude de robustesse est réalisée a posteriori pour évaluer la sensibilité des indicateurs de performance aux incertitudes sur les modèles de simulation et sur les points et les conditions de fonctionnement
On the way to more electric aircraft (MEA), more and more power-by-wire (PBW) actuators are involved in the flight control system. For a hybrid redundant actuation system composed by the conventional hydraulically powered actuators and the PBW actuators, one major issue while they operate on active/active mode is the force fighting between channels. As the grave influence of force fighting on accelerating material fatigue and increasing power consumption,it must be addressed with attention. This thesis was aiming at proposing some effective force equalization control strategies for the hybrid actuation system involving one servo-hydraulic actuator (SHA) and one electro-mechanical actuator (EMA). For this objective, the position controllers for SHA and EMA were designed and validated as a first step. Then, a virtual test bench regarding to the realistic behaviors was built in the AMESim simulation environment to accelerate the controller design and enable the robustness study. Following this, 2 static force equalization control strategies were proposed and experimentally validated. The first strategy hat introduced integral force fighting signal to compensate the actuator position control was proved a good candidate solution. In the next part, 3 dynamic force equalization strategies were proposed and assessed on the virtual test bench. Their performance sensitivities to the parameter uncertainties were studied through Monte-Carlo method. The first strategy that introduced velocity and acceleration feed-forwards to force the SHA and EMA having similar pursuit dynamics showed a good force equalization performance as well as good segregation and good robustness. In the end, the work presented in thesis was concluded and perspective was given to the ongoing work
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Tenali, Vijaya Sagar. "Simulation of electro-hydraulic servo actuator." Thesis, 2007. http://ethesis.nitrkl.ac.in/4295/1/Simulation_of_electro-hydraulic__servo_actuator.pdf.

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Hydraulic actuators are used in many applications like aircraft flight control, machinery and automobiles etc. This actuator when coupled with a feedback system is called a Servo Actuator. The response of the hydraulic actuator with time is significant particularly when the actuator is used for flight control operations. So finding the time response operation will be very helpful for the designer for analyzing the performance of the system. This also helps the designer to arrive at optimum design parameters of the hydraulic actuator. In this thesis a position control electro-hydraulic linear actuator is selected. This actuator is used for controlling the movements of the helicopter. Mathematical modelling of the hydraulic actuator and its components is done and based on the mathematical equations Matlab/Simulink models of the actuator and its components were made and the time response of the linear actuator is obtained by using Matlab/Simulink Software. The time response graphs which are obtained in this simulation are found to be in good compromise with the time response graphs of Moog experimental time response graphs.
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Book chapters on the topic "Servo Electro-Hydraulic actuator"

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Vyas, J. Jaidev, Balamurugan Gopalsamy, and Harshavardhan Joshi. "Servo Valve Characteristic Curves." In Electro-Hydraulic Actuation Systems, 39–45. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2547-2_3.

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Zhu, Longfei, Paiyou Si, Shuangbai Liu, Changya Xie, Teng Zhang, Yuou Hu, and Xiaozhi Qiu. "Optimization and application of parameter identification error algorithm for electro-hydraulic servo and actuator system of the turbine-based on slip window sampling." In Energy Revolution and Chemical Research, 682–88. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003332657-95.

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Dinca, L., and J. I. Corcau. "Experimental Development and Numerical Simulation of an Electro-Hydraulic Servo-Actuator." In DAAAM International Scientific Book 2013, 831–48. DAAAM International Vienna, 2013. http://dx.doi.org/10.2507/daaam.scibook.2013.50.

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Dinca, L., and J. I. Corcau. "Experimental Identification of a Servo-Valve Parameters Used for an Electro-Hydraulic Servo-Actuator Development." In DAAAM International Scientific Book 2013, 813–30. DAAAM International Vienna, 2013. http://dx.doi.org/10.2507/daaam.scibook.2013.49.

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Conference papers on the topic "Servo Electro-Hydraulic actuator"

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Ling, T. G., M. F. Rahmat, A. R. Husain, and R. Ghazali. "System identification of electro-hydraulic actuator servo system." In 2011 4th International Conference on Mechatronics (ICOM). IEEE, 2011. http://dx.doi.org/10.1109/icom.2011.5937172.

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Brasil Pintarelli, Marina, Emília Villani, and Ronaldo Horácio Cumplido Neto. "Thermohydraulic Modeling of An Electro-Hydraulic Servo Actuator on Damped Mode." In Workshop on Innovative Engineering for Fluid Power. Linköping University Electronic Press, 2023. http://dx.doi.org/10.3384/ecp196005.

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Hydraulically powered flight control systems are widely used in aviation, especially for commercial aircraft, which require significant forces from system actuators to control the applicable surfaces as demanded. These systems are being studied and are evolving to become smaller, lighter, and more efficient. These improvements bring several advantages, such as payload increase and drag reduction. However, as these systems are optimized, and their dimensions are reduced, the thermal effects of fluid flow become more relevant. Especially when the working fluid passes through small orifices, excessive heat can eventually compromise the equipment's performance and damage its internal subcomponents. When we analyze the damped mode operation of actuation systems presented on some commercial aircraft, these restrictions become even more relevant – knowing that the damping orifice diameter can be significantly reduced to provide the desired performance for the operation. Therefore, the main goal of this study is to analyze and evaluate the thermal impact on an Electro-Hydraulic Servo Actuator (EHSA) while in damped mode operation, contributing to the industry and the literature in this kind of assessment. Through the research presented, it's possible to estimate the temperature of the system's components and, consequently, avoid malfunctions caused by overheating. Furthermore, developing a model allows the simulation of various environmental conditions, reducing rig costs or in-flight tests. The modeling approach was conducted on the MATLAB/Simulink platform. It was based on two main points that improved model comprehension during its development and minimized errors: the building blocks philosophy of segregating each component's influence and model, and the continuous validation of the model through a comparison with a physics-integrated software (AMESim).
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Hahn, Piepen, and Leimbach. "Input/output linearization control of an electro servo-hydraulic actuator." In Proceedings of IEEE International Conference on Control and Applications CCA-94. IEEE, 1994. http://dx.doi.org/10.1109/cca.1994.381197.

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Soudbakhsh, Damoon, and Anuradha M. Annaswamy. "Prognostics and Health Monitoring of Electro-Hydraulic Systems." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5392.

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Electro-Hydraulic Systems (EHS) are commonly used in many industrial applications. Prediction and timely fault detection of EHS can significantly reduce their maintenance cost, and eliminate the need for redundant actuators. Current practice to detect faults in the actuators can miss failures with combination of multiple sources. Missed faults can result in sudden, unforeseen failures. We propose a fault detection technique based on Multiple Regressor Adaptive Observers (MRAO). The results were evaluated using a two-stage servo-valve model. The proposed MRAO can be used for on-line fault detection. Therefore, we propose a health monitoring approach based on the trend of the identified parameters of the system. Using the history of identified parameters, normal tear and wear of the actuator can be distinguished from the component failures to more accurately estimate the remaining useful life of the actuator.
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Wang, Huawei, Xi Wang, Wei Dang, Huating Yao, and Bin Wang. "Generic Design Methodology for Electro-Hydraulic Servo Actuator in Aero-Engine Main Fuel Control System." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-27337.

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Focusing on the problem that the high stable quality and excellent servo performance of electrohydraulic actuator are needed in aero-engine control system, this paper aims to propose a complete design method for electrohydraulic servo actuator. Firstly, the static characteristics of mechanical-hydraulic system including solenoid control valve, slave valve and metering valve was analyzed to identify their main structure parameters. Secondly, a nonlinear model of this open-loop mechanical-hydraulic system was established in the framework of AMESim. Thirdly, the model’s transfer function was obtained through Prediction Error Methods (PEM) in system identification. Based on the above work, given that the saturation of duty ratio is a nonlinear link, an integral-separated PI controller was applied to constitute the closed-loop electrohydraulic servo actuator. Moreover, to get optimal performance, the controller parameters design was transferred into an optimization process using Differential Evolution (DE) algorithm. Simulation results illustrated that the designed closed-loop electrohydraulic servo actuator shows rapid servo tracking performance, small overshoot and low power loss. It is consistent with the actual engineering and can be used in most aero-engines. In addition, the entire design methodology is generic and can be transplanted in other actuators design.
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Liu, Y., J. Zhang, S. Shao, and K. Yuan. "Reserach on force loading servo control method with feedforward compensation for electro-hydraulic servo actuator." In CSAA/IET International Conference on Aircraft Utility Systems (AUS 2020). Institution of Engineering and Technology, 2021. http://dx.doi.org/10.1049/icp.2021.0208.

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Oliveira e Silva, Dimitri, Marcos Paulo Nostrani, Rodrigo Simões Lopes Junior, and Victor Juliano De Negri. "Digital Hydraulic Actuators: An Alternative for Aircraft Control Surfaces." In Workshop on Innovative Engineering for Fluid Power. Linköping University Electronic Press, 2023. http://dx.doi.org/10.3384/ecp196002.

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In the last decades, digital hydraulics has emerged as a new alternative for the development of more efficient hydraulic systems, where the effects of throttling losses and internal leakages are minimized through the use of conventional hydraulic components associated in parallel or through switching hydraulics. In the aviation industry, hydraulic systems are commonly applied to control highly relevant systems, such as landing gear and flight control surfaces. In this context, digital hydraulics can be used as an alternative solution to improve the energy efficiency of aircraft hydraulic systems. Based on that, this paper aims to present three new hydraulic actuators for application on aircraft flight control surfaces using digital hydraulics. The actuators are being studied by the Laboratory of Hydraulic and Pneumatic Systems - LASHIP of the Federal University of Santa Catarina - UFSC and are called Digital Hydraulic Actuator - DHA, Digital Electro Hydrostatic Actuator - DEHA and Variable Speed Digital Electro Hydrostatic Actuator - VSDEHA. The simulation results show that the actuators developed can be 23 times more efficient than conventional servo-hydraulic actuators, with equivalent dynamic characteristics, demonstrating the potential for application of these new actuators in aeronautical systems.
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Dinca, Liviu, and Jenica Ileana Corcau. "Comparison between a non-linear and linear mathematical model for an electro-hydraulic servo-actuator." In 2012 International Conference on Applied and Theoretical Electricity (ICATE). IEEE, 2012. http://dx.doi.org/10.1109/icate.2012.6403463.

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Jianhui Zhu and Siqin Chang. "Modeling and simulation for application of electromagnetic linear actuator direct drive electro-hydraulic servo system." In 2012 IEEE International Conference on Power and Energy (PECon). IEEE, 2012. http://dx.doi.org/10.1109/pecon.2012.6450251.

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Nostrani, Marcos Paulo, Dimitri Oliveira e Silva, Rodrigo Simões Lopes Junior, Vinícius Vigolo, Petter Krus, and Victor Juliano De Negri. "An Analysis of a Digital Electro Hydrostatic Actuator for Application in Aircraft Flight Control Systems." In ASME/BATH 2023 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/fpmc2023-111940.

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Abstract With the global awareness of reducing greenhouse gas emissions, research into developing more energy efficient hydraulic systems has become important. The aeronautical industry has been looking for more efficient solutions for aircraft application, where the search for more efficient systems has increased considerably, bringing the concept called More Electric Aircraft. However, hydraulic actuators are unbeatable against other technologies, due to their high power/weight ratio and reliability, being the predominant technology in flight control surfaces. Nevertheless, the hydraulic systems have low energy efficiency. With the aim of improving the energy efficiency of hydraulic systems, digital hydraulics has become one of the main technologies under study. However, the use in aircraft is still new. Therefore, this paper presents a digital hydraulic actuator for aircraft flight control surfaces called Digital Electro Hydrostatic Actuator - DEHA. A mathematical model was elaborated and was validated in a test bench rig. The actuator was applied to control an aircraft in the Aero-Data Model in a Research Environment - ADMIRE model. Furthermore, a Servo Hydraulic Actuator - SHA model was developed for comparison. The results show that DEHA can fly the ADMIRE aircraft in the proposed missions, with an energy efficiency of 41.63% while the SHA reached an efficiency of 0.46%, considering the LOE. This represents an efficiency increasing of 90.5 times, which demonstrates that DEHA can be a promising solution for aeronautical application.
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