Theoretical and Experimental Investigation into ‘Efficient Modal Control Strategies’ as Applied on a Plate Structure

In this work some efficient modal control strategies for ‘active vibration control’ are theoretically simulated and experimentally implemented. Experimentation is done on a cantilevered test plate instrumented with one piezoelectric sensor and two piezoelectric actuators. Test system is modelled using finite element procedures. Finite element model is reduced to first three modes using modal reduction technique. Experiments are performed using modal space control (no weighting), modal space control (displacement weighting), modified independent modal space control, modal space control (energy weighting) and modal space control (fuzzy logic based weighting). It has been observed that, efficient modal control strategies conserve energy without sacrificing much on performance.