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Modeling and fault tolerant control of an electro-hydraulic actuator
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Nahian, Syed Abu, Truong, Dinh Quang, Chowdhury, Puja, Das, Debdatta and Ahn, Kyoung Kwan (2016) Modeling and fault tolerant control of an electro-hydraulic actuator. International Journal of Precision Engineering and Manufacturing, 17 (10). pp. 1285-1297. ISSN 2234-7593.
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WRAP-modelling-tolerant-control-Truong-2016.pdf - Accepted Version - Requires a PDF viewer. Download (1577Kb) | Preview |
Official URL: http://dx.doi.org/10.1007/s12541-016-0153-2
Abstract
In the modern industry, electro-hydraulic actuators (EHAs) have been applied to various applications for precise position pressure/ force control tasks. However, operating EHAs under sensor faults is one of the critical challenges for the control engineers. For its enormous nonlinear characteristics, sensor fault could lead the catastrophic failure to the overall system or even put human life in danger. Thus in this paper, a study on mathematical modeling and fault tolerant control (FTC) of a typical EHA for tracking control under sensor-fault conditions has been carried out. In the proposed FTC system, the extended Kalman-Bucy unknown input observer (EKBUIO) -based robust sensor fault detection and identification (FDI) module estimates the system states and the time domain fault information. Once a fault is detected, the controller feedback is switched from the faulty sensor to the estimated output from the EKBUIO owing to mask the sensor fault swiftly and retains the system stability. Additionally, considering the tracking accuracy of the EHA system, an efficient brain emotional learning based intelligent controller (BELBIC) is suggested as the main control unit. Effectiveness of the proposed FTC architecture has been investigated by experimenting on a test bed using an EHA in sensor failure conditions.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TJ Mechanical engineering and machinery | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
| Library of Congress Subject Headings (LCSH): | Actuators -- Industrial applications, Automatic control | ||||||||
| Journal or Publication Title: | International Journal of Precision Engineering and Manufacturing | ||||||||
| Publisher: | Springer | ||||||||
| ISSN: | 2234-7593 | ||||||||
| Official Date: | October 2016 | ||||||||
| Dates: |
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| Volume: | 17 | ||||||||
| Number: | 10 | ||||||||
| Page Range: | pp. 1285-1297 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 10 May 2017 | ||||||||
| Date of first compliant Open Access: | 12 October 2017 | ||||||||
| Funder: | Korea (South). Sanggong Chawŏnbu [Ministry of Trade, Industry and Energy], National Research Foundation of Korea (NRF) | ||||||||
| Grant number: | 2015H1C1A1035547 (NRF) |
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