Simplified global fault accommodation control design of uncertain nonlinear systems with unknown time-varying powers
- Authors
- Yoo, Sung Jin
- Issue Date
- Jan-2020
- Publisher
- SPRINGER
- Keywords
- Global fault accommodation tracking; Unexpected faults; Unknown time-varying powers; Low-complexity design; Guaranteed tracking performance
- Citation
- NONLINEAR DYNAMICS, v.99, no.2, pp 1115 - 1128
- Pages
- 14
- Journal Title
- NONLINEAR DYNAMICS
- Volume
- 99
- Number
- 2
- Start Page
- 1115
- End Page
- 1128
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/38877
- DOI
- 10.1007/s11071-019-05341-7
- ISSN
- 0924-090X
1573-269X
- Abstract
- This paper addresses the problem of global robust fault accommodation tracking for a class of uncertain nonlinear systems with unknown powers and actuator faults. It is assumed that the powers of the concerned system are unknown time-varying functions, all system nonlinearities are unknown, and unknown actuator faults depend on the time-varying power of a control input. A fault accommodation state-feedback controller is explicitly constructed based on the nonlinear error transformation technique using time-varying performance functions. Global tracking with the preselected performance bounds is established in the presence of unknown time-varying powers and unexpected actuator faults. Different from the previous results dealing with the problem of unknown time-varying powers, the proposed tracking strategy does not require the knowledge of the bounds of the time-varying powers and the nonlinear bounding functions of system nonlinearities. An underactuated mechanical system is simulated to validate the effectiveness of the proposed theoretical approach.
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Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
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