Si-ying Zhang

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The design of state observer for a linear discrete or continuous time uncertain system based on circularly regional pole assignment is studied. Taking use of algebraic Riccati equations and linear matrix inequalities, necessary and sufficient conditions for the existence of the state observer based on circularly regional pole assignment is proposed and the(More)
In this paper, a class of end-to end network congestion control algorithms with communication delays is studied. By choosing the communication delay as a parameter, the existence of bifurcation and the stability of the system are proved, and the formulas for determining the stability of bifurcation periodic solutions and the direction of the Hopf(More)
For linear systems, the switch method to design reliable controller is presented against actuator faults. By using strictly redundant reliable controller, standard controller is switched to reliable controller in the event of actuator faults. A more practical model of actuator faults than outage is considered. The resulting closed-loop systems are reliable(More)
Many real-world dynamical networks display the feature of complex structure, and the complexity feature of networks has attracted increasing attention from various fields of science and engineering. In this paper, we introduce a general dynamical network with different coupling strength and study the complexity of this network model with time delays. Based(More)
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