Title: Expansion of mixed H₂/H_∞ control prototype into networked control systems

Authors: Zhongda Lu; Fengbin Zhang; Lijing Wang; Fengxia Xu

Addresses: College of Computer Science and Technology, Harbin University of Science and Technology, 150080, Harbin, China; College of Computer and Control Engineering, Qiqihar University, 161000, Qiqihar, China ' College of Computer Science and Technology, Harbin University of Science and Technology, 150080, Harbin, China ' Modern Education Technology Center, Qiqihar University, 161000, Qiqihar, China ' College of Computer and Control Engineering, Qiqihar University, 161000, Qiqihar, China

Abstract: Taking networked control systems with uncertain time delays as research background, this paper proposes a model to accommodate the influence of unknown input disturbance and uncertainty induced from system modelling error. According to the mixed robust controller designed norm, a proper Lyapunov-Krasovskii function is derived to enhance the system robustness, and the sufficient conditions for robust stability of such systems are established in the form of LMI, which make the performance indicators of H₂ and H_∞ satisfied. A bench test simulation example shows that the designed controller is feasible and effective.

Keywords: networked control systems; NCS; mixed H₂/H_∞ control; linear matrix inequality; LMI; time delay.

DOI: 10.1504/IJMIC.2017.085301

International Journal of Modelling, Identification and Control, 2017 Vol.28 No.1, pp.78 - 85

Received: 26 May 2016
Accepted: 30 Aug 2016
Published online: 21 Jul 2017 *

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