Journal
ISA TRANSACTIONS
Volume 80, Issue -, Pages 43-53Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2018.07.044
Keywords
Time-delay estimation; SW sigma; Dependence measure; Copula
Categories
Funding
- National Natural Science Foundation of China [61472020, 61472419, 61472037, 61300066]
- National 863 Program of China [2015AA016403]
- open funding project of State Key Laboratory of Virtual Reality Technology and Systems, Beihang University [BUAA-VR-17KF-01]
- Fundamental Research Funds for the Central Universities [2017MS128]
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This paper addresses the time-delay estimation problem of SISO systems using uniformly sampled input-output data. A dependence measure known as Schweizer and Wolffs sigma (SW sigma) from the copula theory is employed to measure the dependence of the input-output data. The quantitative relation between the time-delay and SW sigma is studied, and the time-delay is estimated given that the SW sigma of the input-output data reaches its maximum value when the time-delay is removed. The major advantage of our work is that no other parameters of the system must be estimated before or during the time-delay estimation process. Experiments and comparisons are used to verify the feasibility and effectiveness of the proposed method.
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