1714 適応型セルフセンシング・アクチュエータを用いたスマート構造の振動制御(J08-4 振動・騒音制御,適応構造,J08 知的材料・構造システム)

概要

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Self-Sensing Actuator (SSA) is known to be effective in vibration control of flexible structures. Self-Sensing actuator has performance of both sensor and actuator. An important thing in Self-Sensing piezoelectric actuator is a precisely. ballanced bridge circuit. This circuit easily becomes unbalanced because of piezoelectric material which is sensitive to ambient temperature. If this circuit is unbalanced, a sensor signal is mixed with a control signal and a system of smart structure becomes unstable. In this paper, adaptive compensation is proposed to combine with SSA technique based on virtual bridge circuit. This combined design, at first, estimates sensor output with observer, and estimates piezoelectric capacitance. The results of this paper illustrate that combined designed SSA can suppress the vibration of a cantilever beam during the piezoelectric capacitance variation.
社団法人日本機械学会の論文
2005-09-18