PURPOSE: To remove the influence of a cross talk even when the number of parameters is increased, or a frequency is limited by shifting a phase by specific amounts when a superimposed frequency is matched with the high frequency, sum frequency, or difference frequency of the other superimposed frequency, or the other superimposed frequency itself. ;CONSTITUTION: When the high frequency, sum frequency, or difference frequency of the superimposed frequency generated by an oscillator 31 of the other parameter control part 3 is substantially matched with the output of the oscillator 31, and a cross talk frequency is generated, the phase of a fine vibration generated by its own oscillator 31 is shifted by π/2 or the odd number-fold length against the phase of the cross talk frequency by a phase adjusting equipment 36. An error signal generating part 2 is a plural input constitution because an object to be controlled is a neural network 11, and it is equipped with plural circuits constituted of a subtracter 21 and squaring circuit 22, and an adder 23 which adds the outputs of those circuits. Therefore, direct components at the time of multiplying signals are turned to zero, and the influence of the cross talk can be removed.;COPYRIGHT: (C)1994,JPO&Japio
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