Her tarafı tutturulmuş esnek levhanın piezoelektrik yamalar aracılığı ile titreşim karakterizasyonu ve kontrolü

In this thesis, motivation is to investigate vibration behavior of the fully clamped thin flexible plate and suppress the vibration of this plate by applying active control methodologies. Active vibration control system is created using surface bonded piezoelectric patches as actuators and a Laser Doppler Vibrometer(LDV) as velocity sensor.At the first part of this thesis, vibration characteristics of the fully clamped plate are investigated experimentally. Experimental modal analysis is completed using piezoelectric patches as actuators, and a laser Doppler vibrometer (LDV) as vibration sensor.In the second part of the thesis, active vibration control of the fully clamped plate using velocity feedback algorithm is presented. Velocity feedback controller is implemented with an analog circuit. Undesired vibration and control actuation are created using piezoelectric patches and A LDV is recruited as velocity sensor. Three different piezoelectric patches are fixed on fully clamped plate and active vibration control performance with different configurations of those patches is analyzed. Besides active vibration control performance, effect of changing control gains of velocity feedback on the modal behavior of the plate is investigated.Third part of this thesis presents results for active vibration control system designed using digital programmable controller. In this section, two different controller algorithms are utilized. First a proportional velocity feedback controller is designed and implemented.For another analysis, preferred controller is state feedback controller. Using same set-up, and same equipments, controller performances on vibration suppression and effect of different controller gains on the plate for each digital controller case are analyzed. .