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Reduced-order full information estimation observer-based dissipative control for nonlinear discrete-time switched singular systems with unknown inputs

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  • Shi, Hongpeng
  • Zhao, Zhenli
  • Ma, Shuping

Abstract

The dissipative control problem for nonlinear discrete-time switched singular systems (NDSSSs) is investigated via a novel reduced-order observer in this paper. Firstly, based on the generalized Sylvester equations and the introduced nonlinear injection term, a novel reduced-order observer is designed for each subsystem. The designed reduced-order observer can still produce accurate full-information estimation even though the dynamics and the output of the systems both contain unknown inputs. Then, by using average dwell-time scheme and multi-Lyapunov functions, some new sufficient conditions are proposed such that the resulted closed-loop NDSSSs are regular and causal, have a unique solution, and are globally uniformly asymptotically stable with a strict (Q,S,V)-γ-dissipative. A novel relaxation technique is proposed for decoupling nonlinear inequalities involving products of multiple nonsquare unknown variables. The design procedures of reduced-order observer and controller are presented by a specific algorithm. Finally, two numerical examples and an electronic circuit example are provided to illustrate the effectiveness of the theoretical results.

Suggested Citation

  • Shi, Hongpeng & Zhao, Zhenli & Ma, Shuping, 2025. "Reduced-order full information estimation observer-based dissipative control for nonlinear discrete-time switched singular systems with unknown inputs," Applied Mathematics and Computation, Elsevier, vol. 493(C).
    • Handle: RePEc:eee:apmaco:v:493:y:2025:i:c:s0096300324007173
    DOI: 10.1016/j.amc.2024.129256
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    References listed on IDEAS

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    1. Yu, Peng & Ma, Yuechao, 2020. "Observer-based asynchronous control for Markov jump systems," Applied Mathematics and Computation, Elsevier, vol. 377(C).
    2. Nguyen, Minh Cuong & Trinh, Hieu, 2016. "Unknown input observer design for one-sided Lipschitz discrete-time systems subject to time-delay," Applied Mathematics and Computation, Elsevier, vol. 286(C), pages 57-71.
    3. Truong, Hoai Vu Anh & Phan, Van Du & Tran, Duc Thien & Ahn, Kyoung Kwan, 2024. "A novel observer-based neural-network finite-time output control for high-order uncertain nonlinear systems," Applied Mathematics and Computation, Elsevier, vol. 475(C).
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