Anactive underwater acoustic reflection control system
作者： Daeyong Kwon , Jinoh Park , Byungdoo Jeon , Woosuk Chang
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摘要: In this paper, an active underwater acoustic reflection control system is investigated experimentally in a water-filled pulse tube using samples with two layers of 1-3 piezocomposites, one as pressure sensor and another cancelling transmitter. A one-dimensional electroacoustic model first developed for multi-layer sensor-actuator to simulate the frequency responses both actuator. The controller transfer function closed-loop feedback single then derived. Significant echo reductions harmonic incident waves low band are achieved by directly phase-shifting signal amplifying it drive canceling
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