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This paper deals with consensus robust output regulation of discrete-time linear multi-agent systems under a directed interaction topology. The digraph is assumed to contain a spanning tree. Every agent or subsystem is identical and uncertain, but subsystems have different external disturbances. Based on the internal model and general discrete-time algebraic Riccati equation, a distributed consensus...
The paper proposes an analytical model, which deals with the throughput of 802.11 DCF in presence of hidden nodes under saturation condition. Different scenarios are used in simulation to validate it, and the results show that the model is fairly accurate.
To reduce the width of the gap between the steel sheets will be welded by laser to form tailored blank, roller forming process by plastically deforming the thicker sheet is presented. Mechanism scheme and working principle of the roller forming device are introduced. Mathematical model of roller forming is founded by experiment and function fitting. Rolling and welding experiment results show that...
To simulate the zero-gravity activities of the docking ring in a spacecraft docking testbed, a gravity balance device with high respond speed and high precision was designed. Mechanism scheme and working principle of the gravity balance device are introduced. The characteristics of the follower mechanism, which may interfere with the gravity balance system, are analyzed in detail. The accuracy of...
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