期刊
INFORMATION SCIENCES
卷 296, 期 -, 页码 25-41出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ins.2014.10.039
关键词
Transcale control; LQG control; Tracking control; Multiscale system; Wavelet packet decomposition
资金
- National Basic Research Program of China (973 Program) [2012CB821200, 2012CB821201]
- National Nature Science Foundation of China [61134005, 61221061, 61327807, 61304232]
In this paper, a wavelet packet decomposition (WPD) based real-time transcale linear-quadratic-Gaussian (LQG) tracking control algorithm is given for a class of discrete stochastic systems, which is developed with the state-space models of wavelet packet coefficients at the coarsest scale decomposition layer established by Haar WPD. The WPD-based transcale control algorithm provides a compromise between performance index and computational efficiency compared with the conventional LQG tracking control algorithm, and it is an improvement of the wavelet transform based algorithm previously proposed. Simulation results are presented to demonstrate the effectiveness of the proposed algorithm. (C) 2014 Elsevier Inc. All rights reserved.
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