A Novel Active Control Strategy with Decentralized Decoupling and Wavelet Packet Transformation: Design and Verification

Active vibration control (AVC) can solve many problems. However, structural in underwater vehicles often involves other factors such as complex excitation and path coupling, etc. At present, the traditional algorithm (e.g., multi Filtered-x Least Mean Square, M-FxLMS) usually cannot effectively process multi-frequency coupling effects of multi-secondary path, which will affect its convergence stability to a certain extent. Consequently, novel strategy is presented this paper, namely, wavelet packet transformation decentralized decoupling M-FxLMS (WPTDDM-FxLMS), problems mentioned above. The converted into single-frequency line spectrum control, feedback compensation factor introduced identification secondary both simplify multi-path system parallel single-path systems. Furthermore, WPTDDM-FxLMS applied AVC multi-input multi-output (MIMO) platform. Finally, simulation experiments show that decompose signal, improvement variable step-size reduce computation amount increase speed accuracy. Overall, significant for control. It have engineering application value vehicles.