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以计算机声卡作为噪声发生装置,运用MATLAB驱动VXI总线仪器,构建一个实验室双通道声试验控制系统,采用多输入多输入比例均方根控制算法实现对空间两点噪声功率谱的控制,使两点的响应谱同时满足控制目标。进行了仿真分析与多次模拟试验,最后给出了两点噪声控制的试验结果,结果表明该控制系统基本能够满足控制要求,验证了文中方法的可行性,为噪声环境试验的深入研究提供了一定的参考价值。
Using computer sound card as a noise generator, MATLAB is used to drive the VXI bus instrument to build a laboratory two-channel acoustic test control system. The multi-input multi-input proportional root mean square control algorithm is used to control the noise power spectrum of two points in space. The response spectrum of points meets the control objectives at the same time. Finally, the experimental results of two-point noise control are given. The results show that the control system can basically meet the control requirements and verify the feasibility of the method proposed in this paper, which provides a further study of noise environment test Certain reference value.