In order to find the optimum dimensions and locations of piezoactuators in the active control systems, a novel procedure for simultaneous dimension and location optimization of piezoactuators for active control of flexible structures is introduced. Three optimization criteria are investigated and compared which leads to an optimal configuration of the actuators particularly relevant when the weight and geometry limitations are important. In the first criterion we seek a configuration of the piezoactuator which maximizes the overall damping ratio of the closed loop system. Minimization of the overall real part of eigenvalues of the controlled system is the second criterion. For the third criterion, we seek the minimum LQR cost function over possible dimensions and locations. The optimization indicates that the best configuration of piezoactuators in active control systems is the shortest and widest.
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