A quick adaptive algorithm for controlling the optical dynamic system

in which the system identifier of the controlled optical dynamic system is a feedforwad neural network

is presented in this paper.In this NN adaptive algorithm the difference between the outputs of the controlled optical dynamic system and the trained NN identifier is employed as the negative feedback in readjusting the systems's control parameter.Because the NN identifier can reconstruct the dynamic model of the controlled optical dynamic system quickly and precisely from the output time series with the support of the chaos speedup BP algorithm

this adaptive control algorithm is considered applied to control the otpical dynamic system when the reference model for control can not be obtained in advance.This improved NN adaptive control algorithm has been applied successfuly to control the Bragg diffraction acousto optic bistable system quickly in the computer simulation.