Observer-based H-infinity control in multiple channel networked control systems with random packet dropouts |
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Authors: | Weiwei CHE Jianliang WANG and Guanghong YANG |
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Affiliation: | 1. School of Electrical and Electronic Engineering,Nanyang Technological University,Singapore 639798 2. School of Information Science and Engineering,Northeastern University,Shenyang Liaoning 110004,China |
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Abstract: | This paper investigates the observer-based $H_{\infty}$ control
problem for networked control systems (NCSs) with random packet
dropouts. A general packet dropout model with multiple independent
stochastic variables in multiple channels case is adopted to
describe the data missing in the limited communication channels.
With the consideration of the sensor-to-controller and
controller-to-actuator packet dropouts at the same time, a new
method is proposed based on a separation lemma to design an
observer-based $H_{\infty}$ controller, which exponentially
stabilizes the closed-loop system in the sense of
mean square and also achieves a prescribed $H_{\infty}$
disturbance attenuation level. A numerical example is given to illustrate the effectiveness of the proposed control
method. |
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Keywords: | Networked control system (NCS) H-infinity control Separation lemma Random packet dropouts LMI |
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