Transcale control for a class of discrete stochastic systems based on wavelet packet decomposition

被引:10
作者
Zhao, Lin [1 ]
Jia, Yingmin [1 ]
机构
[1] Beihang Univ BUAA, Res Div 7, Beijing 100191, Peoples R China
关键词
Transcale control; LQG control; Tracking control; Multiscale system; Wavelet packet decomposition; LINEAR DYNAMIC PROCESSES; OPTIMAL TRACKING CONTROL; MULTISCALE THEORY; ALGORITHMS; FILTER;
D O I
10.1016/j.ins.2014.10.039
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
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.
引用
收藏
页码:25 / 41
页数:17
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