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Design of an optimal preview controller for linear discrete-time descriptor systems with state delay

Mengjuan Cao and Fucheng Liao

International Journal of Systems Science, 2015, vol. 46, issue 5, 932-943

Abstract: In this paper, the linear discrete-time descriptor system with state delay is studied, and a design method for an optimal preview controller is proposed. First, by using the discrete lifting technique, the original system is transformed into a general descriptor system without state delay in form. Then, taking advantage of the first-order forward difference operator, we construct a descriptor augmented error system, including the state vectors of the lifted system, error vectors, and desired target signals. Rigorous mathematical proofs are given for the regularity, stabilisability, causal controllability, and causal observability of the descriptor augmented error system. Based on these, the optimal preview controller with preview feedforward compensation for the original system is obtained by using the standard optimal regulator theory of the descriptor system. The effectiveness of the proposed method is shown by numerical simulation.

Date: 2015
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Citations: View citations in EconPapers (3)

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DOI: 10.1080/00207721.2013.801097

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