Exact Solutions for Instability Control of Piezolaminated Imperfect Struts

摘要

The exact solutions for active instability control of strut is demonstrated in this Note by using displacement and velocity feedback methods. A comparative study of the combined displacement and velocity feedback method is shown with respect to energy consumption. Displacement feedback increases the effective stiffness of the structure and velocity feedback augments its damping. Hence, displacement feedback is necessary to reduce the amplitude of vibration and velocity feedback is necessary to attenuate it more rapidly. A judicious selection of displacement and velocity feedback is required for optimum energy consumption in control.