An integrated structural/control design for the vibration suppression of a composite plate with segmented piezoelectric (PZT) actuators is examined. The electric power used by the PZT materials becomes a very important factor for real application to the control of flexible structures. The method to predict power required for the control is presented, and the power is used as a part of the objective functions. The structural weight, the state error energy, control energy, stability robustness, and the electric power required for vibration control are considered as the objective function. The locations of the PZT actuators are considered as control design variables. The ply orientation and thickness coefficients of the laminated composite plate are considered as structural design variables. The improved compromise multiobjective optimization by using a reduction factor of performance indices is applied to solve this optimization problem. The sequential linear programming method with move limits is used. The sensitivity analysis, which is required in the optimization process, is performed for the eigenstructure assignment control scheme and the performance indices with respect to the design parameters. The optimized results showed a significant amount of reduction in the structural weight as well as the control performance indices. The required electric power is also decreased.
ASJC Scopus subject areas
- Control and Systems Engineering
- Aerospace Engineering
- Space and Planetary Science
- Electrical and Electronic Engineering
- Applied Mathematics