Position Control of a Single-Rod Electro-Hydrostatic Actuator Experiencing a Leaky Piston Seal
Single-rod cylinders are generally employed in electro-hydrostatic actuators (EHAs). A condition that is difficult to detect and could degrade the performance in single-rod EHAs, is the faulty cylinder piston seal. It causes internal leakage from one chamber of the actuator to another. In this work,...
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| Veröffentlicht in: | Mathematical problems in engineering 2022-09, Vol.2022, p.1-10 |
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| creator | Ren, Guangan Mou, Xiangwei Wen, Xiaohao Chen, Lintao |
| description | Single-rod cylinders are generally employed in electro-hydrostatic actuators (EHAs). A condition that is difficult to detect and could degrade the performance in single-rod EHAs, is the faulty cylinder piston seal. It causes internal leakage from one chamber of the actuator to another. In this work, a position controller with tolerance to actuator internal leakage is synthesized for a single-rod EHA using quantitative feedback theory (QFT). The controller is also robust to different loading and environmental stiffnesses. The ability of the controller is compared with another QFT controller that is synthesized without considering leakage fault. The simulation results show that the QFT fault-tolerant controller can meet prescribed specifications despite internal leakage up to 8.6 L/min. |
| doi_str_mv | 10.1155/2022/3166926 |
| format | Article |
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A condition that is difficult to detect and could degrade the performance in single-rod EHAs, is the faulty cylinder piston seal. It causes internal leakage from one chamber of the actuator to another. In this work, a position controller with tolerance to actuator internal leakage is synthesized for a single-rod EHA using quantitative feedback theory (QFT). The controller is also robust to different loading and environmental stiffnesses. The ability of the controller is compared with another QFT controller that is synthesized without considering leakage fault. The simulation results show that the QFT fault-tolerant controller can meet prescribed specifications despite internal leakage up to 8.6 L/min.</description><identifier>ISSN: 1024-123X</identifier><identifier>EISSN: 1563-5147</identifier><identifier>DOI: 10.1155/2022/3166926</identifier><language>eng</language><publisher>New York: Hindawi</publisher><subject>Actuators ; Controllers ; Design ; Electrical faults ; Fault tolerance ; Mathematical models ; Performance degradation ; Quantitative feedback theory ; Robust control ; Synthesis</subject><ispartof>Mathematical problems in engineering, 2022-09, Vol.2022, p.1-10</ispartof><rights>Copyright © 2022 Guangan Ren et al.</rights><rights>Copyright © 2022 Guangan Ren et al. This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 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A condition that is difficult to detect and could degrade the performance in single-rod EHAs, is the faulty cylinder piston seal. It causes internal leakage from one chamber of the actuator to another. In this work, a position controller with tolerance to actuator internal leakage is synthesized for a single-rod EHA using quantitative feedback theory (QFT). The controller is also robust to different loading and environmental stiffnesses. The ability of the controller is compared with another QFT controller that is synthesized without considering leakage fault. 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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Wiley Online Library (Open Access Collection); Alma/SFX Local Collection |
| subjects | Actuators Controllers Design Electrical faults Fault tolerance Mathematical models Performance degradation Quantitative feedback theory Robust control Synthesis |
| title | Position Control of a Single-Rod Electro-Hydrostatic Actuator Experiencing a Leaky Piston Seal |
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