Journal
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
Volume 20, Issue 11, Pages 3561-3572Publisher
INST CONTROL ROBOTICS & SYSTEMS, KOREAN INST ELECTRICAL ENGINEERS
DOI: 10.1007/s12555-021-0518-x
Keywords
Actuator fault; interval; interval estimation; observer; set inversion; zonotope
Categories
Funding
- Natural Science Foundation of Jiangsu Province [BK20221533]
- National Key Research and Development Program of China [2020YFB1710600]
- Jiangsu Science and Technology Association Young Science and Technology Talents Lifting Project [TJ-2021-006]
- National Natural Science Foundation of China [61802150, 61973138]
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A fault estimation algorithm based on interval set inversion observer filtering for linear discrete-time systems with unknown but bounded disturbance and noise is proposed. The algorithm minimizes the F-norm of the state error to design a conservative interval observer. Vector Boolean operations and dimensional operations are used to contract the guaranteed interval estimation results of the observer. The computational complexity, memory requirements, and accuracy of the algorithm are also analyzed.
A guaranteed fault-estimation algorithm based on interval set inversion observer filtering is proposed for linear discrete-time systems with unknown but bounded disturbance and noise. The minimal conservative interval observer is designed by minimizing the F-norm of the state error. Vector Boolean operations and dimensional operations are used to develop a new interval set inversion algorithm to further contract the guaranteed interval estimation results of the observer. The computational complexity, memory requirements, and accuracy of the proposed algorithm are also analyzed. Finally, simulation examples are provided to verify the efficiency and practicability of the proposed algorithm.
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