Active Vibration Control Of Elastic Plate Based On Adaptive Algorithm

With the development of underwater radiated noise detection technology, how to improve the submarine acoustic stealth characteristics, reducing radiated noise of submarine's, then appears especially important. But submarine's power generator part, usually fixes in a foundation, its foundation may be approximate is a rectangular steel plate, therefore may through conduct the research to the rectangular steel plate's vibration, attempts to seek for one effective vibration control method to reduce the submarine's radiated noise.This article is research on the cantilever plate and beam's active vibration control. This content mainly includes three aspects:single-channel adaptive feedforward control algorithm. Cantilever beam, plate dynamics analysis. The research of the cantilever beam, plate active vibration control test.First, we deduced the classical LMS algorithm, through the relationship of step size and maladjustment, reducing the range of step size convergence. Also filter-XLMS algorithm is deduced, and simulation analysis the affect of the sub-channel for the convergence of the algorithm.Secondly, this article through the cantilever beam, plate receive a single point, two points by harmonic force drive the modality mode of vibration, verified by the method of two points excitation the feasibility of vibration suppression, and further optimized sensor and actuator's disposition.Finally, based on the above two tasks, And then designing a single-channel adaptive feedforward controller which is based on ICKTEK-VC5509-A.In order to do cantilever beam and plate's active vibration control. The results show that the active vibration control by this method can effectively inhibit the cantilever plate and beam's vibration at the specified frequency.