Journal
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
Volume 58, Issue 2, Pages 349-362Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCSI.2010.2071970
Keywords
Bilinear matrix inequalities (BMIs); coupled network; external disturbance; H-infinity synchronization performance; linear matrix inequalities (LMIs); quasi-strongly connected; synchronized network; time-delayed network
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Funding
- National Science Council of Taiwan [98-2221-E-007-113-MY3]
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In this paper, the H-infinity theory is introduced to investigate the robustness and design of synchronization nonlinear coupled network. The H-infinity synchronization performance is defined as the disturbance attenuation ability for a synchronized coupled network. To measure the H-infinity synchronization performance of a nonlinear coupled network, we need to solve a Hamilton-Jacobi inequality (HJI), which is hard to treat directly. Hence, a Takagi-Sugeno fuzzy system is employed to approximate the nonlinear coupled network, so that the HJI can be replaced by a set of linear matrix inequalities. Furthermore, based on this H-infinity synchronization performance, a robust nonlinear coupled network with a prescribed H-infinity synchronization performance can be designed for a given network topology. In the robust H-infinity synchronization network, our design task is to specify the minimum coupling strengths of the corresponding links in the network topology such that the coupled network cannot only synchronize but also attenuate the external disturbance below a prescribed level. Since the design of robust H-infinity synchronization network leads to a set of bilinear matrix inequalities (BMIs), a two-step algorithm is proposed to solve the BMI-constrained optimization problem. The time-delay effect on the synchronization of coupled network is also discussed.
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