| 摘要 |
PURPOSE:To obtain objective excitation precisely without specific excitation for finding out a reverse transmission functional matrix by correcting the characteristics of a vibration board repeatedly from a result of main excitation while considering the change of peak frequency at the time of repeated input compensation. CONSTITUTION:A control circuit of the vibration board is provided with an objective wave generator 12, an excitation command value generator 26, G<-1> 24 obtained by trial addition, a vibration board feedback control system 10, an excited waveform storage device 28, a comparator 29, and an exited data processor 31. In addition, a reverse transmission function correcting device 50 and a switch 51 are connected and the device 50 corrects the reverse transmission function G<-1> from time series data of excitation command values and time series data of excited results. The switch 51 sends the G<-1> obtained by the trial excitation to the generator 26 only at the 1st addition, and after the 2nd addition, sends the G<-1> obtained by the device 50 to the generator 26. The characteristics of the vibration board are repeatedly corrected from the results of the main excitation while considering the change of the peak frequency and the objective excitation is precisely found out without specific excitation finding out the transmission function matrix. |
