基于激励补偿的水声基阵互辐射阻抗控制研究

Research of Mutual Radiation Impedance Controlfor Acoustic Array Based on Excitation Compensation

针对互辐射阻抗对水声基阵阵元表面振速的影响,研究了基于激励补偿的互辐射阻抗控制方法。首先分析了阵元表面振速与激励之间的关系,然后对比实际激励与理想激励的区别,得到激励补偿的计算公式,最后利用阵元间的互辐射阻抗修正了激励补偿计算公式。仿真结果表明:在低频、小间距基阵中,激励的幅度和相位需采用所提算法进行较大的补偿,以达到互辐射阻抗控制的效果。

For the effect of mutual radiation impedance onsurface vibration velocity of underwater acoustic element,the mutual radiation impedance control method is studied based on the excitation compensation. The relationship between surface vibration velocity and excitation is analyzed,the calculation formula of excitation compensation is derived by comparing the difference between the actual excitation and the ideal excitation,and the proposed formula is modified by using mutual radiation impedance. The simulation results show that the amplitude and phase should be compensated by the proposed method in order to control the mutual radiation impedance in low frequency and small spacing array.