Patent ID: 9063867
Filing Date: 2015-06-23
Classification: G05B,G06F,H03H

Abstract:
1. A gravity search adaptive apparatus for modeling a system, the apparatus comprising: a system modeling circuit configured to receive an input signal input to the system, to convert the input signal using a model parameter vector, and to output the converted signal; and an adaptive controller configured to calculate, using a gravity search adaptive algorithm for solving a problem of finding a global minimum of a cost function which is in the form of a quadratic function, the model parameter vector when an error signal, which is a difference between an output signal of the system and an output signal of the system modeling circuit, converges on a minimum power value, and to apply the calculated model parameter vector to the system modeling circuit, wherein the adaptive controller calculates a power value ε of the error signal, the power value ε being expressed as equation 104 below: where w[k] is the model parameter vector resulting from k-th iteration of the calculation of the model parameter vector, p=E{x[k]y[k]}, σ