Abstract
This paper focuses on the almost sure consensus via time-varying feedback for a class of uncertain stochastic nonlinear multiagent systems. A remarkable feature of the systems is that the nonlinearities allow serious unknowns and time-variations. Moreover, there exists no known bound for the unknown control coefficients. To handle the unknowns and time-variations, a time-varying consensus scheme is developed. The main idea of the scheme is to incorporate a delicate function of time into consensus protocols such that the unknowns and time-variations can be compensated as time increases. Based on the proposed protocols, the almost sure leaderless consensus and almost sure leader-following consensus are achieved. Finally, two simulation examples are provided to illustrate the effectiveness of the theoretical results.
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