Active wave suppression in the interior of a one-dimensional domain
Active wave suppression in the interior of a one-dimensional domain
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DOI：
10.1016/j.automatica.2018.11.030
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发表时间：
2019-02
期刊：
影响因子：
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通讯作者：
L. Sirota;A. Annaswamy
中科院分区：
文献类型：
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作者：
L. Sirota;A. Annaswamy
我们考虑的问题，创建一个吸收器的内部系统，支持一维波的传播，如波导，使用主动控制。控制目标是抑制波传播超过波导的规定区域，但不干扰该区域内的传播。与边界控制不同，在内部实现完全吸收引入了创建非透射和非反射汇的挑战。我们克服了这一挑战，通过引入一个近单向控制波，这是通过使用两个集中的致动器。基于可用的控制能量使残余反作用波最小化。我们采用这种控制波的两种算法，前馈和反馈之一，我们表示为内波抑制。我们通过数值模拟的声波导的例子来说明理论结果。
We consider the problem of creating an absorber in the interior of a system that supports one-dimensional wave propagation, such as a waveguide, using active control. The control goal is suppression of wave propagation beyond a prescribed region of the waveguide, but without perturbing the propagation within that region. Unlike boundary control, achieving full absorption in the interior introduces a challenge of creating both a non-transmitting and a non-reflecting sink. We overcome this challenge by introducing a near uni-directional control wave which is accomplished by using two concentrated actuators. The residual back-action wave is minimized based on the available control energy. We employ this control wave in two algorithms, a feed-forward and a feedback one, which we denote by Interior Wave Suppression. We illustrate the theoretical results through numerical simulation of an acoustic waveguide example.