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State-Constrained Control of Single-Rod Electrohydraulic Actuator With Parametric Uncertainty and Load Disturbance [PDF]
IEEE Transactions on Control Systems Technology, 2018 The suppression of disturbances under parametric uncertainties is one of the most common control problems in electrohydraulic systems, as both disturbances and uncertainties often significantly degrade the tracking performance and bias the load pressure of the electrohydraulic actuator (EHA).
Qing Guo +3 more
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The Method of Detecting Leaks in Pneumatic Actuators on the Example of a Selected Production System
Technologia i Automatyzacja MontażuCompressed air is a very important energy medium in industrial processes.Leaks in pneumatic systems, inappropriate pressure, improper use of components, etc. are responsible for losses of produced compressed air.
Andrzej Loska, Artur Macha
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High‐gain observer‐based output feedback control of single‐rod electro‐hydraulic actuator
IET Control Theory & Applications, 2015 In this study, a non‐linear backstepping control method based on a high‐gain observer design is presented for a single‐rod electro‐hydraulic actuator, which is not a strict feedback non‐linear system. An equivalent model transformation is used for load pressure to establish the relationship between displacement command and virtual command of load ...
Qing Guo, Tian Yu, Dan Jiang
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High Precision Adaptive Robust Neural Network Control of a Servo Pneumatic System
Applied Sciences, 2019 In this paper, an adaptive robust neural network controller (ARNNC) is synthesized for a single-rod pneumatic actuator to achieve high tracking accuracy without knowing the bounds of the parameters and disturbances. The ARNNC control framework integrates
Ye Chen, Guoliang Tao, Hao Liu
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AIP Advances, 2017 Fe-Ga (Galfenol) and Fe-Al (Alfenol) are rare-earth-free magnetostrictive alloys with mechanical robustness and strong magnetoelastic coupling.
Julia R. Downing +2 more
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3D Printing in Medicine, 2019 Background Skin tumors are the most predominant form of cancer in the United States. Radiation therapy, particularly high dose-rate (HDR) brachytherapy, provides an effective form of cancer control when surgery is not possible or when surgical margins ...
Jennifer Chmura +6 more
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Adaptive Robust Motion Control of Electra-Hydraulic Servo Systems Driven by Single-Rod Actuators
IFAC Proceedings Volumes, 1998 Abstract This paper studies the high performance robust motion control of electro-hydraulic servo systems driven by single-rod actuators. In contrast to the double-rod hydraulic actuators studied previously, the two chambers of a single-rod hydraulic actuator have different areas.
Bin Yao, Fanping Bu, George T.C. Chiu
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Multi-nozzle molten metal droplet jetting
Additive Manufacturing LettersMolten metal droplet jetting (MMJ) is an emerging metal additive manufacturing (AM) technology that can use low-cost wire, rod, or even ingot feedstock material.
Irtaza Razvi +6 more
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Pump-controlled hydraulic circuits for single-rod actuators: New designs and performance evaluation
, 2020 This thesis investigates the challenges in designing pump-controlled single-rod actuators and proposes new solutions for them. Three different concepts to overcome the reported performance problems are proposed. By applying the new concepts, eight different new designs are introduced, among which, five are experimentally evaluated.
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Energy storage and reutilization for a single-rod electro-hydrostatic actuator system
, 2022 Single-rod electro-hydrostatic actuator (EHA) systems have higher efficiencies when compared to conventional valve-controlled systems. However, increasing demands for energy resources, declining fossil fuels and increasing greenhouse gas emissions require the development of technologies that can further improve the system efficiency.
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