Abstract：Active control equations are derived from the dynamic equation of linear elastic piezoelectric laminated structure. Piezoelectric actuator/sensor are modeled by the three-dimension eight-node coupled element. The finite element model of piezoelectric smart structure has been developed by use of ANSYS/APDL parameter language, modal analysis has been also performed. The optimal actuator/sensor location problem is formulated in the framework of a zero-one optimization problem which is solved using genetic algorithms (GA). Taking piezoelectric smart cantilever beam structure as numerical samples, the direct proportional feedback control performance of smart structure under transient load collocated actuator/sensor at optimal and general locations is studied. To verify the correctness of the method, further studied the effect control system under harmonic load.
2011, Vol. 32 
