Abstract
A new robust semi-active method is proposed to suppress various multimodal vibrations. The robust control consists of Mamdani method and semi-active threshold control. We demonstrate it to be applicable to multimodal vibration suppression for vibrating structures. Our proposed control only requires the information of natural frequencies for the real-time feedback control. We carried out experiments of vibration suppression using our Mamdani-logic-based control and conventional threshold control, and compared their suppression performances. The experiment indicates that our proposed control can adapt to conditions outside the assumed range of excitations. The proposed control displays good robustness when faced with sudden changes in vibrations, and also displays high suppression performance.
