周波数変動を考慮した振動試験機の特定周波数反力補償(機械力学,計測,自動制御)

概要

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This paper presents an adaptive control methodology of a vibration testing system for earthquake simulators. In the system, reaction forces generated by a specimen deteriorate the motion performance, resulting in the lower control accuracy in seismic test. Especially, in cases of excitation tests for structures (power facilities, large vehicles, etc.) including motors, the reaction force as a disturbance is excited with a specific frequency during their actual operations. In addition, the variation of the rotational frequency in the motor cause the variation of frequency in the disturbance. In order to compensate for the disturbance, therefore, an adaptive feedback compensator is designed to improve the disturbance suppression capability, by applying an adaptive notch filter to identify the frequency in real time manner. The proposed control approach has been verified by experiments using a prototype of shaking table system.
一般社団法人日本機械学会の論文
2008-07-25