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In order to solve the problem that linear observer can not accurately observe the nonlinear system, in this paper, an improved nonlinear state observer based on BP neural network is designed. On account of BP neural network can approximate nonlinear functions with arbitrary precision, the observer we put forward can estimate the unmeasurable state variables of complex nonlinear systems so that could...
In accordance with the characteristics of the complex system, its multivariable, nonlinear and delayed, based on MGM (1, N), this paper proposes a new multivariable grey model (MGM (1, N|τ, r)) which is established by introducing delayed factor τ and nonlinear factor r. The main work of this article is to research modeling process, parameter estimation, precision inspection, forecasting and so on...
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