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Journal articles on the topic 'Pneumatic control Simulation methods'

Author: Grafiati

Published: 10 December 2022

Last updated: 31 July 2025

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1

Pankov, Andrey, Grigoriy Nechaev, Vadim Miroshnikov, et al. "Modeling and Experimental Research of Pneumatic Elements for Transportation Control Systems." Transport automation research 9, no. 4 (2023): 342–54. http://dx.doi.org/10.20295/2412-9186-2023-9-04-342-354.

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The article demonstrates that specialized devices play a significant role in transportation control systems, and they are developed based on the application of pneumatic elements (pneumonics). By using fluidic and other flow-based pneumatic elements and devices, it becomes possible, in certain cases, to perform automatic control functions in the most rational manner. In certain operating conditions, this method of control is the only feasible option, for example, where electronic control systems cannot operate. The analysis of the prospects for the use of control devices based on pneumatics ha

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2

Li, Wen, and Hong Min Li. "A Pneumatic Miniature Robotic Control System Based on Improved Single Neural Network PID Control." Applied Mechanics and Materials 347-350 (August 2013): 733–38. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.733.

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At present pneumatic miniature robotic control system usually adopts PID control strategy. The basic PID control strategy has its limitations. To cope with this problem, a lot of methods to optimize this strategy have been researched. In the paper an improved single neural network PID control strategy is put forward. The control strategy is a single neuron adaptive controller with adjusting weighting coefficient. Both simulation and experimental results indicate that this scheme is a feasible control method for the 3-dof pneumatic miniature robotic control system.

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Chen, Yuansi, Min Jiang, Fufeng Yang, et al. "Research on Dynamic Modeling and Control of Magnetorheological Hydro-Pneumatic Suspension." Actuators 14, no. 2 (2025): 73. https://doi.org/10.3390/act14020073.

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A novel magnetorheological semi-active hydro-pneumatic suspension system was proposed to overcome the shortcoming of the traditional hydro-pneumatic suspension without adaptive vibration damping function. It is based on the magnetorheological semi-active vibration reduction technology to effectively improve the ride performance of the vehicle. Firstly, a nonlinear model was established with the Bouc–Wen model based on the mechanical property test results of magnetorheological hydro-pneumatic spring. Secondly, the dynamic model of the single-wheel magnetorheological hydro-pneumatic suspension s

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MILECKI, Andrzej, and Dominik RYBARCZYK. "Investigations of applications of smart materials and methods in fluid valves and drives." Journal of Machine Engineering 19, no. 4 (2019): 122–34. http://dx.doi.org/10.5604/01.3001.0013.6235.

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In the paper the investigations performed at the Division of Mechtronic Devices at Poznan University of Technology in the area of application of both: smart materials in electro-hydraulic and electro-pneumatic valves, and new methods to control of hydraulic servo drives, are presented. In a first part the piezo bender actuator is shortly described and its application in servo valve is proposed. This actuator replaced the torque motor in the available on the market servo valve. The new valve simulation model is proposed. The simulation and investigations results of the servo valve with the piez

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Yao, Ning. "Control of Speed Analysis of Pneumatic Servo Manipulator." Applied Mechanics and Materials 473 (December 2013): 255–58. http://dx.doi.org/10.4028/www.scientific.net/amm.473.255.

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This paper established a mathematical model of the Pneumatic manipulator speed servo system, and its simulation is passed by Simulink. Through the analysis of systems performance,the PID correction methods of the system is improved. The stability of the system is increased greatly after the PID correction. In the end, the improved method is pointed out.

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Blasiak, Slawomir, Pawel Andrzej Laski, and Jakub Emanuel Takosoglu. "Rapid Prototyping of Pneumatic Directional Control Valves." Polymers 13, no. 9 (2021): 1458. http://dx.doi.org/10.3390/polym13091458.

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The main objective of the study was to design a pneumatic directional control valve for controlling pneumatic drives and produce it using a rapid prototyping technique. As the basic design assumption was to achieve high performance through a high flow rate and a low pressure drop, it was necessary to determine two flow parameters: the sonic conductance and the critical pressure ratio. The flow rate of compressed air and the diameters of the pneumatic conduits and fittings are important as they affect the rate of travel of the pneumatic cylinder piston. The 3D solid model of the directional con

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Elobaid, Youssif Mohamed Toum, Jain Huang, and Yongji Wang. "Nonlinear Disturbance Observer Based Robust Tracking Control of Pneumatic Muscle." Mathematical Problems in Engineering 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/872093.

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Presently pneumatic muscles (PMs) are used in various applications due to their simple construction, lightweight, and high force-to-weight ratio. However, pneumatic muscles are facing various problems due to their nonlinear characteristics and various uncertainties in real applications. To cope with the uncertainties and strong nonlinearity of a PM model, a nonlinear disturbance observer (NDO) is designed to estimate the lumped disturbance. Based on the disturbance observer, the tracking control of PM is studied. Stability analysis based on Lyapunov method with respect to our proposed control

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Igolkin, Aleksandr A., Artur I. Safin, Dmitriy M. Stadnik, and Maxim V. Balyaba. "DETERMINATION OF THE CAPACITY OF THE EXHAUST NOISE MUFFLER OF PNEUMATIC SYSTEMS BY COMPUTATIONAL AND EXPERIMENTAL METHODS." Journal of Dynamics and Vibroacoustics 9, no. 2 (2023): 6–12. http://dx.doi.org/10.18287/2409-4579-2023-9-2-6-12.

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One of the main problems of pneumatic systems is the noise that occurs when compressed air is discharged, which negatively affects personnel. To create an effective noise muffler, it is necessary to predict its throughput. The article presents the results of experimental studies of the bandwidth of a noise muffler using porous polypropylene. A simulation model of a noise muffler as part of a pneumatic system has been created and calculations of pressure changes at control points have been carried out. Noise measurements were carried out and the acoustic efficiency of the developed muffler was

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Muratbakeev, Eduard, Yuriy Kozhubaev, Yao Yiming, and Shehzad Umar. "Symmetrical Modeling of Physical Properties of Flexible Structure of Silicone Materials for Control of Pneumatic Soft Actuators." Symmetry 16, no. 6 (2024): 750. http://dx.doi.org/10.3390/sym16060750.

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With the ongoing advancements in material technology, the domain of soft robotics has garnered increasing attention. Soft robots, in contrast to their rigid counterparts, offer superior adaptability to the environment, enhanced flexibility, and improved safety, rendering them highly suitable for complex application scenarios such as rescue operations and medical interventions. In this paper, a new type of pneumatic software actuator is proposed. The actuator adopts a combination of a soft structure and pneumatic control, which is highly flexible and versatile. By using the flow of gas inside t

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Na, Lu, Wang Yijin, Zhang Wenxin, and Farra Aidah Jumuddin. "Development of a Pneumatic Heartbeat Simulation Device." Malaysian Journal of Medical Research 08, no. 02 (2024): 17–25. http://dx.doi.org/10.31674/mjmr.2024.v08i02.003.

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Introduction: A pneumatic heart simulator designed to replicate a heartbeat in its entirety uses compressed air to mimic the contraction and relaxation phases of a human heart. This system typically includes a network of valves, actuators, and sensors that precisely control the airflow to simulate the dynamic pressure and volume changes of cardiac cycles. The simulator is valuable for medical training, device testing, and research, providing a realistic and controllable environment for studying heart function and related phenomena. Methods: A simulated heart and base are included in the pneuma

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11

Yu, Yang, and Tao Fu. "Design and Experimental Study of Cavity Structure of Pneumatic Soft Actuator." Actuators 12, no. 8 (2023): 314. http://dx.doi.org/10.3390/act12080314.

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In order to study the influence of the cavity inclination angle bending performance of pneumatic soft actuators, two kinds of soft actuators were designed, one with a five-degree-angle cavity structure, and the other with a hybrid variable-degree-angle cavity structure. The bending performance of zero-degree-angle, five-degree-angle, and hybrid variable-degree-angle soft actuators was investigated by experimental methods and the ABAQUS finite element simulation method. The results show that, under seven different pressure loads, the mean absolute error between the experimental results and the

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Zhang, Yu, Wenchuan Zhao, Ning Wang, and Dengyu Lu. "Development and Performance Analysis of Pneumatic Soft-Bodied Bionic Basic Execution Unit." Journal of Robotics 2020 (November 3, 2020): 1–13. http://dx.doi.org/10.1155/2020/8860550.

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This paper studies the design of pneumatic soft-bodied bionic basic execution unit with soft-rigid combination, which can be used as an actuator for pneumatic soft-bodied robots and soft-bodied manipulators. This study is inspired by structural characteristics and motion mechanism of biological muscles, combined with the nonlinear hyperelasticity of silica gel and the insertion of thin leaf spring structure in the nonretractable layer. Response surface analysis and numerical simulation algorithm are used to determine the optimal combination of structural dimension parameters by taking the maxi

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13

Arden, W. J. B., and C. S. Cox. "Remote Boundary Pressure Control." Measurement and Control 20, no. 9 (1987): 56–60. http://dx.doi.org/10.1177/002029408702000903.

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In recent years the emphasis within British Gas PLC has moved from the construction aspects of the natural gas transmission system, to one of investigating methods of optimising the operational efficiency of the existing pipline network. In particular, the developments which have taken place in the area of microprocessor technology have provided the opportunity to implement improved control strategies in areas where existing pneumatic based systems are somewhat limited in terms of performance. This paper describes a problem associated with the control of pressure, at a remote point, which can

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Najjari, Behrouz, Mohammad J. Fotuhi, and Mousa Vaezipour. "Theoretical and Empirical Improvement of a Fast-Switching Electro-Pneumatic Valve by Using Different Methods." Acta Mechanica et Automatica 16, no. 2 (2022): 91–97. http://dx.doi.org/10.2478/ama-2022-0011.

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Abstract In this paper, a non-linear model of a 2–2 way, on–off fast-switching valve is used. The model includes subsystems of electrical, magnetic, mechanical and fluid. Pulse width modulation (PWM) technique is adopted to energise the on–off solenoid valve and allow the air to flow towards the actuator. Since the non-linear behaviour of valve is of great importance, to reduce the delay in performance of switching valves, different approaches are proposed. Furthermore, hysteresis, proportional integrator (PI), optimal model predictive and fuzzy logic controller (FLC) are used and compared. Al

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Baranowski, Leszek, and Michał Siwek. "Use of 3D Simulation to Design Theoretical and Real Pipe Inspection Mobile Robot Model." Acta Mechanica et Automatica 12, no. 3 (2018): 232–36. http://dx.doi.org/10.2478/ama-2018-0036.

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Abstract The main aim of the paper is to present the process of design pipe inspection mobile robot by using 3D simulations. Next methods and processes of making designed components was described. Finally, functional tests of a constructed real robot model such as speed tests, inclined pipe test was carried out. The robot was specifically designed to inspect sewer pipelines. The mobile robot is equipped with a vision system. The structure of the pipe inspection robot allows adjustments to the geometrical parameters of the robot to suit the sewer pipes diameters by using in the construction of

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Szczepaniak, Paweł, Michał Jóźko, and Jakub Włodarczyk. "The Concept of a Pneumatic Parachute Rescue System for Vertical Take-Off and Landing UAVs." Journal of KONBiN 49, no. 2 (2019): 79–100. http://dx.doi.org/10.2478/jok-2019-0026.

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Abstract This publication addresses the proposed structural solution for a system, of which the conceptual essence involves a rescue parachute being ejected from an accumulator using compressed carbon dioxide. The suggested rescue system is intended for unmanned multicopter aircraft. The article presents a developed digital solid model and the results of its simulation tests. The paper also contains results of basic calculations of the pneumatic supply system energy balance and the power balance of the electric control system. It also presents the results of first in-flight tests with a simula

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Karnjanaparichat, Tarapong, and Radom Pongvuthithum. "Adaptive tracking control of multi-link robots actuated by pneumatic muscles with additive disturbances." Robotica 35, no. 11 (2016): 2139–56. http://dx.doi.org/10.1017/s0263574716000758.

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SUMMARYIn this paper, we study the problem of adaptive position tracking for a multi-link robot driven by two opposing pneumatic muscle groups with additive disturbances. In contrast to widely used sliding mode control methods, the proposed controller is continuous and able to prevent chattering. All physical parameters of the robot and the pneumatic muscles, including pneumatic muscle coefficients, link lengths and moments of inertia are unknown and can be time-varying and the unknown additive disturbances can be discontinuous. Under these conditions, we prove that closed-loop trajectories of

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18

Shu, Hengtao, and Haizhou Chen. "The Influence of a Blade-Guiding Fin on the Pneumatic Performance of an Axial-Flow Cooling Fan." Machines 11, no. 4 (2023): 483. http://dx.doi.org/10.3390/machines11040483.

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An axial-flow cooling fan was taken as the research object in this paper, and a certain number of simulation models with different blade-guiding fin shapes were established. The methods of computational fluid dynamics (CFD), circumferential vorticity (CV) analysis and the response surface method (RSM) based on the design of experiments (DOE) method were all employed. The main external flow characteristics of the cooling fan, the blade surface pressure distribution, the static pressure efficiency and the fan power were obtained and compared. The relationships between the pneumatic performance a

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19

Wang, Ning, Yu Zhang, Guofeng Zhang, Wenchuan Zhao, and Linghui Peng. "Development and Analysis of Key Components of a Multi Motion Mode Soft-Bodied Pipe Robot." Actuators 11, no. 5 (2022): 125. http://dx.doi.org/10.3390/act11050125.

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In order to enhance the environmental adaptability of peristaltic soft-bodied pipe robots, based on the nonlinear and hyperelastic characteristics of silicone rubber combined with the biological structure and motion characteristics of worms, a hexagonal prism soft-bodied bionic actuator is proposed. The actuator adopts different inflation patterns to produce different deformations, so that the soft-bodied robot can realize different motion modes in the pipeline. Based on the Yeoh binomial parameter silicone rubber constitutive model, the deformation analysis model of the hexagonal prism soft-b

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20

Chen, Bao Jiang, Tian Zi Ge, and Jian Zhi Wang. "A Study on the Key Technologies of a Kind of Automatic Packaging System." Applied Mechanics and Materials 548-549 (April 2014): 963–67. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.963.

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In order to improve the productivity of the filing form materials continuously and automatically packaged line, the control methods for the manipulator and the mechanism which has the capacity of weight self-measuring and auto–filling to the packaged material were studied. The manipulator is a pneumatic control system, it is consists of three pneumatic cylinder circuits to implement the horizontal movements, vertical movements and the activities of picking up or putting down the materials on line. The material to be picked up by manipulator was weighed and displayed by a single chip microcompu

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Zhang, Xiang, Yonghua Lu, Yang Li, Chi Zhang, and Rui Wang. "Numerical calculation and experimental study on response characteristics of pneumatic solenoid valves." Measurement and Control 52, no. 9-10 (2019): 1382–93. http://dx.doi.org/10.1177/0020294019866853.

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In order to analyze the response characteristics of the solenoid valve in depth, the flow field of the solenoid valve is analyzed by means of the computational fluid dynamics, and the aerodynamic parameters that are difficult to be obtained by the traditional methods are obtained with software FLUENT. We also set up the mathematical model of the solenoid valve, including the aerodynamic model, the circuit model, the magnetic circuit model and the mechanical motion model. The calculation is completed in the Simulink, and the results of the calculation are analyzed. A set of the solenoid valve r

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Korendiy, V. M., O. Yо Kotsiumbas, and O. V. Lanets. "Analysis of technical and operational characteristics of turning-and-shunting door opening mechanism of electric public transport." Scientific Bulletin of UNFU 29, no. 3 (2019): 89–95. http://dx.doi.org/10.15421/40290319.

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One of the most important problems occurring while designing public transport vehicles consists in providing an effective control of the door opening systems. The methods of carrying out the investigations presented in the paper include structural and kinematic analysis of the door opening mechanisms and simulation of their operation in applied software. The paper analyses the design and operational peculiarities of the turning-and-shunting mechanism of door opening of electric public transport. The corresponding design of the mechanism is proposed. It is suggested to be driven by pneumatic dr

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Vázquez, Francisco, Juan Garrido, Ruiz Mario L. Ruz, and Hornero Jorge Jimenez. "Stiction compensation for low-cost electric valves." Control Engineering Practice 134 (May 5, 2023): 105482–99. https://doi.org/10.1016/j.conengprac.2023.105482.

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Nonlinear dynamics of control valves, such as stiction, can produce significant performance degradation in the control loops where they are involved. There are several works in the literature describing and modelling these phenomena and proposing different compensation methods, such as the inclusion of dead-band, knockers, etc. in the PID controllers. These previous studies in the literature have only focused on expensive industrial control valves, mainly pneumatic. However, there are other applications, such as heating, ventilation and air conditioning (HVAC) systems in vehicles, that use low

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Kozhubaev, Yuriy, Elena Ovchinnikova, Ivanov Viacheslav, and Svetlana Krotova. "Incremental Machine Learning for Soft Pneumatic Actuators with Symmetrical Chambers." Symmetry 15, no. 6 (2023): 1206. http://dx.doi.org/10.3390/sym15061206.

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Soft robotics is a specialized field of robotics that focuses on the design, manufacture, and control of robots made of soft materials, as opposed to those made of rigid links. One of the primary challenges for the future use of continuous or hyper-redundant robotics systems in industrial and medical technology is the development of suitable modeling and control approaches. Due to the complex non-linear behavior of soft materials and the unpredictable motion of actuators, the task of modeling complex soft actuators is very time-consuming. As a result, earlier studies have undertaken research i

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Alhrshy, Laurence, Alexander Lippke, and Clemens Jauch. "Variable Blade Inertia in State-of-the-Art Wind Turbine Structural-Dynamics Models." Energies 16, no. 16 (2023): 6061. http://dx.doi.org/10.3390/en16166061.

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This paper presents a comparison of two methods to represent variable blade inertia in two codes for aero-servo-elastic simulations of wind turbines: the nonlinear aeroelastic multi-body model HAWC2 and the nonlinear geometrically exact beam model BeamDyn for OpenFAST. The main goal is to enable these tools to simulate the dynamic behavior of a wind turbine with variable blade inertia. However, current state-of-the-art load simulation tools for wind turbines cannot simulate variable blade inertia, so the source code of these tools must be modified. The validity of the modified codes is proven

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Zhang, Xinjie, Shouyi Yu, Jianlong Dai, et al. "A Modular Soft Gripper with Combined Pneu-Net Actuators." Actuators 12, no. 4 (2023): 172. http://dx.doi.org/10.3390/act12040172.

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Soft Pneumatic-Network (Pneu-Net) Actuators (SPAs) have been used extensively in making soft grippers, due to their simple driving forms and large bending deformation. However, the capabilities of the regular SPAs in complex soft gripping application environments are alone insufficient. This work, thus, proposes a modular soft gripper that combines the functionalities of regular and herringbone actuators. The bending deformation characteristics of the two actuators under pneumatic pressures are verified by finite element (FE) simulations and experiments. The functional characteristics of the t

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Tiziani, Lucas, Alexander Hart, Thomas Cahoon, Faye Wu, H. Harry Asada, and Frank L. Hammond. "Empirical characterization of modular variable stiffness inflatable structures for supernumerary grasp-assist devices." International Journal of Robotics Research 36, no. 13-14 (2017): 1391–413. http://dx.doi.org/10.1177/0278364917714062.

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This paper presents the design, fabrication, and experimental characterization of modular, variable stiffness inflatable components for pneumatically actuated supernumerary robotic (SR) grasp-assist devices. The proposed SR grasp-assist devices are comprised of soft rigidizable finger phalanges and variable stiffness pneumatic bending actuators that are manufactured using soft lithography fabrication methods. The mechanical and kinematic properties of these modular, inflatable components are characterized experimentally under various loading conditions and over a range of geometric design para

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Alyukov, Alexander, Yuri Rozhdestvenskiy, and Sergei Aliukov. "Active Shock Absorber Control Based on Time-Delay Neural Network." Energies 13, no. 5 (2020): 1091. http://dx.doi.org/10.3390/en13051091.

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A controlled suspension usually consists of a high-level and a low-level controller. The purpose the high-level controller is to analyze external data on vehicle conditions and make decisions on the required value of the force on the shock absorber rod, while the purpose of the low-level controller is to ensure the implementation of the desired force value by controlling the actuators. Many works have focused on the design of high-level controllers of active suspensions, in which it is considered that the shock absorber can instantly and absolutely accurately implement a given control input. H

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Luong, Quoc Viet, Dae-Sung Jang, and Jai-Hyuk Hwang. "Intelligent Control Based on a Neural Network for Aircraft Landing Gear with a Magnetorheological Damper in Different Landing Scenarios." Applied Sciences 10, no. 17 (2020): 5962. http://dx.doi.org/10.3390/app10175962.

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A typical oleo-pneumatic shock-absorbing strut (classic traditional passive damper) in aircraft landing gear has a metering pin extending through the orifice, which can vary the orifice area with the compression and extension of the damper strut. Because the metering pin is designed in a single landing condition, the traditional passive damper cannot adjust its damping force in multiple landing conditions. Magnetorheological (MR) dampers have been receiving significant attention as an alternative to traditional passive dampers. An MR damper, which is a typical semi-active suspension system, ca

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Nogmov, Mukhamed K., Ibragim M. Lianov, Viktor R. Lysenko, and Natalia V. Dmitrichenko. "Development of a Flow-Measuring Hydropneumatic Bench for Testing Pipeline Valves." Civil Engineering Journal 9, no. 1 (2023): 166–82. http://dx.doi.org/10.28991/cej-2023-09-01-013.

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Pipe fittings are an important element of any pipeline network, ensuring stable and safe operation by regulating the flow of the working medium. To control the performance of pipeline valves, it is necessary to conduct various tests, the main ones of which are hydraulic and pneumatic. It is important to expand testing capabilities and reduce time costs. The purpose of this work is to combine hydraulic and pneumatic tests into one test complex, which will reduce the time of the test complex due to the absence of the need for reinstallation and reconfiguration. The subject of the study is the de

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Nankyo, Masanobu, Tadashi Ishihara, and Hikaru Inooka. "Feedback Control of Braking Deceleration on Railway Vehicle." Journal of Dynamic Systems, Measurement, and Control 128, no. 2 (2005): 244–50. http://dx.doi.org/10.1115/1.2192825.

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An increase of the deceleration in high-speed and high-density train operations degrades riding comfort and frequently causes wheel skids. This requires an introduction of the control technology to upgrade the control performance of brake systems on railway vehicles. We are now studying control methods for a mechanical brake that uses friction and pneumatic pressure, including nonlinear elements as the basis of a brake force. Furthermore, the system itself has certain “dead time,” which is not negligible and makes control difficult. One of our targets is to develop a brake control device that

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Gholipour, Sara, Heydar Toosian Shandiz, Mobin Alizadeh, Sara Minagar, and Javad Kazemitabar. "Dynamic Sliding Mode Control Based on Fractional Calculus Subject to Uncertain Delay Based Chaotic Pneumatic Robot." International Journal of Sensors, Wireless Communications and Control 10, no. 3 (2020): 413–20. http://dx.doi.org/10.2174/2210327909666190319142505.

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Background & Objective: This paper considers the chattering problem of sliding mode control in the presence of delay in robot manipulator causing chaos in such electromechanical systems. Fractional calculus was used in order to produce a novel sliding mode to eliminate chatter. To realize the control of a class of chaotic systems in master-slave configuration, a novel fractional dynamic sliding mode control scheme is presented and examined on the delay based chaotic robot. Also, the stability of the closed-loop system is guaranteed by Lyapunov stability theory. Methods: A control scheme is

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Xu, Jiawei, and Gary M. Bone. "Actuators for Improving Robotic Arm Safety While Maintaining Performance: A Comparison Study." Actuators 13, no. 2 (2024): 69. http://dx.doi.org/10.3390/act13020069.

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Since robotic arms operating close to people are becoming increasingly common, there is a need to better understand how they can be made safe when unintended contact occurs, while still providing the required performance. Several actuators and methods for improving robot safety are studied and compared in this paper. A robotic arm moving its end effector horizontally and colliding with a person’s head is simulated. The use of a conventional electric actuator (CEA), series elastic actuator (SEA), pneumatic actuator (PA) and hybrid pneumatic electric actuator (HPEA) with model-based controllers

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Zhan, Hong-wu, Fang Xu, and Ling-feng Lu. "Researches on the Observation on the Jetting of Liquid of High Viscosity and Droplet Control." Open Mechanical Engineering Journal 9, no. 1 (2015): 812–19. http://dx.doi.org/10.2174/1874155x01509010812.

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Valve regulated droplet jetting is an important method for the generation of liquid droplet of high viscosity. Based on learning from piezoelectric micro-droplet jetting mechanism and researching methods, theoretical analysis and simulation were conducted on the factors affecting the micro-droplet jetting volume, and the qualitative relationship between the size of the jetted droplet and the feed pressure and striker stroke so as to guide the designing of the structure of the pneumatic valve control type nozzle and design the droplet jetting system and observation experiment platform based on

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Xie, Hualong, Yao Xie, and Fei Li. "Design, Modeling and Control of Bionic Knee in Artificial Leg." INTERNATIONAL JOURNAL OF COMPUTERS COMMUNICATIONS & CONTROL 14, no. 5 (2019): 733. http://dx.doi.org/10.15837/ijccc.2019.5.3622.

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The biped robot with heterogeneous legs (BRHL) greatly facilitates the development of intelligent lower-limb prosthesis (ILLP). In the BRHL, the remaining leg of the amputee is simulated by an artificial leg, which provides the bionic leg with the precise gait following trajectory. Therefore, the artificial leg must closely mimic the features of the human leg. After analyzing the motion mechanism of the human knee, this paper designs a four-link bionic knee in light of the coexistence of rolling and sliding between the femur, the meniscus and the tibia. Drawing on the driving mechanism of leg

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Jiang, Hao, Zhanchi Wang, Yusong Jin, et al. "Hierarchical control of soft manipulators towards unstructured interactions." International Journal of Robotics Research 40, no. 1 (2021): 411–34. http://dx.doi.org/10.1177/0278364920979367.

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Performing daily interaction tasks such as opening doors and pulling drawers in unstructured environments is a challenging problem for robots. The emergence of soft-bodied robots brings a new perspective to solving this problem. In this paper, inspired by humans performing interaction tasks through simple behaviors, we propose a hierarchical control system for soft arms, in which the low-level controller achieves motion control of the arm tip, the high-level controller controls the behaviors of the arm based on the low-level controller, and the top-level planner chooses what behaviors should b

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Hassan, Mustafa, Mohammed Ibrahim Awad, and Shady A. Maged. "Develop Control Architectures to Enhance Soft Actuator Motion and Force." Computation 10, no. 10 (2022): 178. http://dx.doi.org/10.3390/computation10100178.

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Study: Soft robots can achieve the desired range of motion for finger movement to match their axis of rotation with the axis of rotation of the human hand. The iterative design has been used to achieve data that makes the movement smooth and the range of movement wider, and the validity of the design has been confirmed through practical experiments. Limitation: The challenges facing this research are to reach the most significant inclined angle and increase the force generated by the actuator, which is the most complicated matter while maintaining the desired control accuracy. The motion captu

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Martínez-Peral, Francisco José, Jorge Borrell Méndez, José Vicente Segura Heras, and Carlos Perez-Vidal. "Development of a Tool to Manipulate Flexible Pieces in the Industry: Hardware and Software." Actuators 13, no. 4 (2024): 149. http://dx.doi.org/10.3390/act13040149.

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Currently, the textile industry is a poorly automated sector, due in part to problems in the handling of deformable leather and textile parts during production operations. In this work, several problems in the handling process of leather and textile parts are addressed, introducing methods to increase the automation of the process. A pneumatic actuator designed to pick up textile or leather parts avoiding their deformation during transport has been developed. This actuator maximizes the number of gripping points to improve handling, making it more stable and efficient. Additionally, a vision s

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Ngwa, Mboulé, Longlong Gao, and Baoren Li. "Numerical and Experimental Investigation of the Conjugate Heat Transfer for a High-Pressure Pneumatic Control Valve Assembly." Entropy 24, no. 4 (2022): 451. http://dx.doi.org/10.3390/e24040451.

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This paper uses heat transfer experiments and computational fluid dynamics (CFD) simulations to investigate the conjugate heat transfer (CHT) in a high-pressure pneumatic control valve assembly. A heat transfer test rig was constructed, and time–temperature histories of five test points placed on the valve assembly’s outer surface were recorded for study validation. The Unsteady Reynolds-Averaged Navier–Stokes (URANS) CFD methods with the standard k-ε turbulence closure equations were adopted in the numerical computations. Polyhedral grids were used; time step and mesh convergence studies were

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Ji, Myunggi, Qiang Li, In Ho Cho, and Jaeyoun Kim. "Rapid Design and Analysis of Microtube Pneumatic Actuators Using Line-Segment and Multi-Segment Euler–Bernoulli Beam Models." Micromachines 10, no. 11 (2019): 780. http://dx.doi.org/10.3390/mi10110780.

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Soft material-based pneumatic microtube actuators are attracting intense interest, since their bending motion is potentially useful for the safe manipulation of delicate biological objects. To increase their utility in biomedicine, researchers have begun to apply shape-engineering to the microtubes to diversify their bending patterns. However, design and analysis of such microtube actuators are challenging in general, due to their continuum natures and small dimensions. In this paper, we establish two methods for rapid design, analysis, and optimization of such complex, shape-engineered microt

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Zhang, Hui-Kai, Wei-Tong Chen, Shi-Hao Xu, Jian Wu, Bo Li, and Xi-Qiao Feng. "Active topological phase transitions in high-order elastic topological insulators driven by pneumatic methods and liquid metals." Journal of Applied Physics 133, no. 10 (2023): 104504. http://dx.doi.org/10.1063/5.0141556.

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Active topological phase transitions widely occur in active matters and biological systems, such as developing embryos. Since the discovery of the intriguing bulk-boundary effects of topological insulators in Hermitian and non-Hermitian systems, various electric, optical, acoustic, and mechanical topological metamaterials with efficient energy transmission and robust defect-immunization have been designed. To date, however, it remains a challenge to precisely and fast manipulate the topological phase transitions in elastic topological insulators. In this paper, on the basis of theoretical anal

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Hassoon, Hussein Raheem, and Zena K. Abbas. "Analyzing Lab and Field Compaction Methods for designing Roller Compacted Concrete Pavements (RCCP) with Different Curing Processes." Engineering, Technology & Applied Science Research 14, no. 5 (2024): 17488–93. http://dx.doi.org/10.48084/etasr.8614.

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Roller-Compacted Concrete Pavements (RCCP) display a combination of attributes associated with both asphalt and conventional rigid pavements. However, their broader implementation remains constrained. One of the reasons is the discrepancy between the manner in which the RCCP mixture behaves in a laboratory setting and its performance in the field. In laboratory settings, the RCCP is blended in accordance with the modified Proctor approach. Subsequently, the Vibratory Hammer (VH) technique is employed to create specimens for strength characterization. In contrast, the actual pavement is constru

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Fujita, Tetsuhito, Yusuke Shimoda, Katsuki Machida, Manabu Okui, Rie Nishihama, and Taro Nakamura. "Development of Variable Viscoelastic Joint Module Performance Evaluation and Proposal of Application Examples." Actuators 11, no. 3 (2022): 89. http://dx.doi.org/10.3390/act11030089.

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With the diversification of robots, modularization of robots has been attracting attention. In our previous study, we developed a robot that mimics the principle of human joint drive using a straight-fiber-type pneumatic rubber artificial muscle (“artificial muscle”) and a magnetorheological fluid brake (“MR brake”). The variable viscoelastic joints have been modularized. Therefore, this paper evaluates the basic characteristics of the developed Joint Module, characterizes the variable viscoelastic joint, and compares it with existing modules. As basic characteristics, we confirmed that the Jo

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Seelecke, Stefan, Julian Neu, Sipontina Croce, Jonas Hubertus, Günter Schultes, and Gianluca Rizzello. "Dielectric Elastomer Cooperative Microactuator Systems—DECMAS." Actuators 12, no. 4 (2023): 141. http://dx.doi.org/10.3390/act12040141.

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This paper presents results of the first phase of “Dielectric Elastomer Cooperative Microactuator Systems” (DECMAS), a project within the German Research Foundation Priority Program 2206, “Cooperative Multistable Multistage Microactuator Systems” (KOMMMA). The goal is the development of a soft cooperative microactuator system combining high flexibility with large-stroke/high-frequency actuation and self-sensing capabilities. The softness is due to a completely polymer-based approach using dielectric elastomer membrane structures and a specific silicone bias system designed to achieve large str

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Khamkar, Akshay Dattaprasad, and Sudhir Madhav Patil. "Digital Twin in Fluid Power: Review - Uses and Outlook." International Research Journal of Multidisciplinary Scope 05, no. 03 (2024): 79–96. http://dx.doi.org/10.47857/irjms.2024.v05i03.01085.

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Digital Twin (DT) technology is a cutting-edge innovation in Industry 4.0 that combines virtual and physical worlds to create real-time representations of scenarios. Simulation, monitoring, and maximizing efficiency are crucial in industrial automation and have been acquiring significant momentum. Fluid Power Application (FPA) is essential in automation, providing accurate control and significant force through hydraulic and pneumatic systems, fluently merging into current configurations. Although there have been significant improvements in DT technology and its prospective applications in flui

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Long, Le Xuan, Vu Van Hai, and Vu Thi Hien. "A study on controlling air chamber pressure of hydro-pneumatic suspension system towards improving mining dump truck ride comfort." International Journal of Future Engineering Innovations 2, no. 3 (2025): 18–24. https://doi.org/10.54660/ijfei.2025.2.3.18-24.

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This study presents the development of a mathematical model and control strategy for a hydro-pneumatic suspension system (HPS) to enhance ride comfort in a mining dump truck. A nonlinear dynamic model is formulated, incorporating the vertical force components of the HPS to accurately represent the system's behavior under real operating conditions. To improve ride comfort, two control methods are proposed: a Proportional-Integral-Derivative (PID) controller and a Fuzzy Logic controller. These controllers are designed to regulate the pressure in the air chamber of the suspension system, which pl

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Andrade, Ana, Kennedy Lopes, Bernardo Lima, and André Maitelli. "Development of a Methodology Using Artificial Neural Network in the Detection and Diagnosis of Faults for Pneumatic Control Valves." Sensors 21, no. 3 (2021): 853. http://dx.doi.org/10.3390/s21030853.

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To satisfy the market, competition in the industrial sector aims for productivity and safety in industrial plant control systems. The appearance of a fault can compromise the system’s proper functioning process. Therefore, Fault Detection and Diagnosis (FDD) methods contribute to avoiding any undesired events, as there are techniques and methods that study the detection, isolation, identification and, consequently, fault diagnosis. In this work, a new methodology that uses faults emulation to obtain parameters similar to the Development and Application of Methods for Diagnosis of Actuators in

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Suppan, Thomas, Markus Neumayer, Thomas Bretterklieber, Stefan Puttinger, and Hannes Wegleiter. "A Model-Based Analysis of Capacitive Flow Metering for Pneumatic Conveying Systems: A Comparison between Calibration-Based and Tomographic Approaches." Sensors 22, no. 3 (2022): 856. http://dx.doi.org/10.3390/s22030856.

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Pneumatic conveying is a standard transportation technique for bulk materials in various industrial fields. Flow metering is crucial for the efficient and reliable operation of such systems and for process control. Capacitive measurement systems are often proposed for this application. In this method, electrodes are placed on the conveyor systems transport line and capacitive signals are sensed. The design of the sensor with regard to the arrangement and the number of electrodes as well as the evaluation of the capacitive sensor signals can be divided into two categories. Calibration-based flo

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Zheng, Rui. "Laser marking method for nonferrous metal casting ingots based on improved RANSAC algorithm." Manufacturing Review 12 (2025): 7. https://doi.org/10.1051/mfreview/2025002.

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Non ferrous metal casting ingots must carry relevant production information, usually using manual pasting of copper coated paper, manual lifting of spray code, and pneumatic marking methods. These methods have a low degree of automation and severe material waste. To this end, genetic algorithm (GA) is used to guide sampling of random sample consensus algorithm (RANSAC) based on probability, and the two are combined for simulation to optimize the shortcomings of RANSAC algorithm in random sampling. On the ground of the optimized RANSAC to fit the plane equation, the normal vector of the plane i

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Keyvanara, Mahboubeh, Arman Goshtasbi, and Irene A. Kuling. "A Geometric Approach towards Inverse Kinematics of Soft Extensible Pneumatic Actuators Intended for Trajectory Tracking." Sensors 23, no. 15 (2023): 6882. http://dx.doi.org/10.3390/s23156882.

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Soft robots are interesting examples of hyper-redundancy in robotics. However, the nonlinear continuous dynamics of these robots and the use of hyper-elastic and visco-elastic materials make modeling these robots more complicated. This study presents a geometric inverse kinematics (IK) model for trajectory tracking of multi-segment extensible soft robots, where each segment of the soft actuator is geometrically approximated with a rigid links model to reduce the complexity. In this model, the links are connected with rotary and prismatic joints, which enable both the extension and rotation of

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