An Energy-Saving Output Feedback Control of Single-Rod Electrohydraulic Servo System with Disturbance Observer
Joint Authors
Ding, Haigang
Wang, Yunfei
Zhao, Jiyun
Man, Jiaxiang
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-07-09
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Single-rod electrohydraulic system is widely applied in industrial production due to high power-to-weight ratio, but it generally has a low energy efficiency and has many system states which need to be measured.
Therefore, an output feedback controller with energy saving is proposed in this paper.
The designed controller only needs a displacement sensor to detect the position of the single-rod cylinder; the other states of the system are estimated by extended state observer (ESO).
Besides, a nonlinear disturbance observer (NDO) is introduced to estimate the external mismatched disturbance.
The output feedback controller based on extended state observer and nonlinear disturbance observer has a better tracking performance compared with other controllers.
In addition, a proportional relief valve (PRV) is introduced to control the supply pressure of the system.
The variable supply pressure reduces the energy of throttling loss and overflow loss, which achieves energy saving of about 54% according to the simulation results.
Meanwhile, the tracking error of the energy saving controller is stable at 0.1 mm.
In a word, the proposed controller not only achieves energy saving but also has a satisfactory trajectory tracking performance.
American Psychological Association (APA)
Wang, Yunfei& Zhao, Jiyun& Ding, Haigang& Man, Jiaxiang. 2020. An Energy-Saving Output Feedback Control of Single-Rod Electrohydraulic Servo System with Disturbance Observer. Complexity،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1142453
Modern Language Association (MLA)
Wang, Yunfei…[et al.]. An Energy-Saving Output Feedback Control of Single-Rod Electrohydraulic Servo System with Disturbance Observer. Complexity No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1142453
American Medical Association (AMA)
Wang, Yunfei& Zhao, Jiyun& Ding, Haigang& Man, Jiaxiang. An Energy-Saving Output Feedback Control of Single-Rod Electrohydraulic Servo System with Disturbance Observer. Complexity. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1142453
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1142453