1. Wavelets approach for the optimal control of vibrating plates by piezoelectric patches.
- Author
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Abualrub, Taher, Abukhaled, Marwan, and Jamal, Binish
- Subjects
- *
PIEZOELECTRIC actuators , *OPTIMAL control theory , *BOUNDARY value problems , *EQUATIONS of motion , *WAVELETS (Mathematics) - Abstract
The optimal control for vibration suppression of a plate by distributed piezoelectric actuators is considered. A performance index in the form of a weighted quadratic functional of the dynamic response of a rectangular simply supported plate will be minimized within a prescribed time duration using piezoelectric patches (voltages). The minimization of the performance index over these voltages is subject to the equation of motion governing the plate's structural vibration and a set of initial and boundary conditions. The solution method is a combination of modal space expansion and direct state parameterization. Modal space expansion will transform the optimal control of a distributed parameter system into the optimal control of a lumped parameter system. Using Legendre wavelets, the quadratic optimization problem is transformed into a mathematical programming problem, where the objective is to minimize a set of unknown coefficients to obtain the optimal trajectory and the optimal control. Numerical examples will be provided to illustrate the effectiveness and the efficiency of the proposed method. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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