振動台のパワースペクトル制御に関する検討

概要

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A power spectrum control technique for a shaking table system of response, which is excited by a pseudo-ramdom wave, is studied. By the experiments using a practical machine and a shaking table model with a single degree of freedom, composed on an analog computer, it is shown that the cause of performance reduction in the power spectrum control concerns a nonlinear friction force and a transient response of a low damping system. Concerning the transient response, it is proved that a good control performance is obtained by an improvement of the averaging method in the power spectra measurements. Concerning the friction force, it is proved that the magnitude influences the control perftrmance. As a result of the power spectrum control for an analog computer model of the shaking table in which the hydraulic servo system is considered, it is shown that the control performance of power spectrum for a response system with a friction force level of a practical machine can be put wdthin the target level ±3dB.
社団法人日本機械学会の論文
1989-08-25