Active random vibration control for stochastic piezoelectric truss structures
نویسنده
چکیده
This paper presents the optimization of the location and feedback gains of active bar in a closed loop control system for stochastic piezoelectric smart truss structures under stationary random excitation. The mathematical model with reliability constraints on the mean square value of the structural random dynamic displacement and stress response is developed based on maximization of dissipation energy due to the control action. The randomness of the structural physical materials and geometric dimensions are included in the analysis, and the applied forces are considered as stationary random excitation. The numerical characteristic of the stationary random responses of stochastic piezoelectric smart structures is developed by the random factor method. Numerical examples of piezoelectric truss structures are presented to demonstrate the rationality and validity of the active control model.
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