Abstract
Vibration control of a plate using an optical fiber sensor and a PZT actuator isconsidered in this study. An aluminum plate with attached extrinsic Fabry–Perotinterferometer (EFPI) and PZT actuator is prepared for experimentalinvestigation. The vibration level of EFPI that can represent the mechanicalstrain without severe distortion is validated by a forced vibration experiment. Alinear time-invariant system model is constructed based on the experimentallyobtained frequency responses, and an optimal controller is designed for themulti-modal vibration suppression. Control performance is presented in frequencyand time domains. It is found that the vibration level of the first three modes canbe greatly reduced. The effect of low-pass filtering used to eliminate highfrequency noise on the stability and control performance is also considered.
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