A Technique for Vibration Cancellation Using a Second Order Piezoelectric Actuator Model
This thesis shows that it is feasible to use a piezoelectric actuator that is bonded to a vibrating surface in order to produce a non-vibrating composite surface. The proposed feedback system for vibration cancellation employs multiplying digital-to-analog converters to realize digital control of the analog compensation circuitry. The equivalent electronic model for the piezoactuator is presented along with a description and analysis of the vibration cancellation circuitry. Cancellation effectiveness of the feedback system that uses a Sallen and Key circuit to simulate the piezoactuator is experimentally determined as a function of frequency for piezoactuator quality factors ranging from 0.5 to 5. Utilizing digital control, a 40 dB reduction of the input disturbance at the resonant frequency of the piezoactuator model has been achieved for Q=5.
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Master of Science (M.S.)
College of Engineering
Length of Campus-only Access
Masters Thesis (Open Access)
Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic
Arangio, Frank M., "A Technique for Vibration Cancellation Using a Second Order Piezoelectric Actuator Model" (1990). Retrospective Theses and Dissertations. 3948.