Shell vibration decentralized control method and device of MFC piezoelectric actuator

The invention provides a shell vibration decentralized control method and device for an MFC piezoelectric actuator, and the method comprises the steps: S1, enabling the MFC piezoelectric actuator to be embedded in a shell, and obtaining data parameters; s2, obtaining a differential equation according to the data parameters, and converting the differential equation into a state-space equation; s3, performing linear transformation on the state-space equation and the state vector to obtain a transformed equation and vector; s4, performing expansion-decoupling-contraction based on the inclusion principle to obtain an expansion system; s5, extracting pairwise overlapped substructures of the substructures from the expansion system, and performing decentralized control design of shell vibration on the overlapped substructures to obtain performance indexes; and S6, calculating by applying mathematical software to obtain a state feedback gain matrix of the overlapped substructure, and performing vibration decentralize