A new algorithm for dual-rate systems frequency response computation in discrete control systems

被引：4
|
作者：
Salt, Julian [1 ]
Sala, Antonio [1 ]
机构：
[1] Univ Politecn Valencia, Syst Eng & Control Dept, Inst Automat & Informat Ind, E-46022 Valencia, Spain
来源：
APPLIED MATHEMATICAL MODELLING | 2014年 / 38卷 / 23期
关键词：
Dual-rate systems; Frequency response; Digital control; Bode diagram; TIME-INVARIANT PLANTS; MULTIRATE; MODEL; PARAMETER; STABILITY;
D O I：
10.1016/j.apm.2014.04.054
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper addresses an easy computation of the multiple components of the response to a sinusoidal input of a dual-rate linear time-invariant discrete system from the Bode diagram of LTI systems arising from a lifted representation. Based on those results, a generalized Bode diagram is suggested. Some new conclusions derived from this conceptual interpretation are introduced. This diagram provides a better insight in the frequency-response issues in multivariable control than the standard singular value decomposition of the lifted model. As an application, the output ripple suppression in a multirate control scheme is presented. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码：5692 / 5704
页数：13
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