期刊
AUTOMATICA
卷 50, 期 1, 页码 262-267出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.automatica.2013.10.008
关键词
Optimal modified performance; Scaled factor; Inner-outer factorization
资金
- National Natural Science Foundation of China [61170024, 61170031, 61272069, 61272114, 61304162]
- 973 National Basis Research Program of China [2011CB013301]
In this paper, the optimal modified performance of the single-input multiple-output (SIMO) linear time-invariant (LTI) systems is investigated. A new modified tracking performance index is proposed to avoid the invalidity of the variance of the tracking error when the steady state tracking error is not a zero vector. The optimal modified performance is related to the scaled factor, the inner factor and the spectral density of the reference input signal. The output dimension and pole direction also play an important role in the optimal modified performance. The strong restrictions on the reference signal directions and the assumption on the plant with an integrator in the existing conclusions are not necessary. Finally, a numerical example is discussed to demonstrate the efficiency of the derived results. (C) 2013 Elsevier Ltd. All rights reserved.
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