【摘要】 基于分布参数控制理论和声学理论，本文清晰地表达了有源消声（ＡＮＣ）所涉及的控制对象、控制系统和性能指标间的关系，指出了控制系统设计所要满足的稳定性条件和消声条件，为ＡＮＣ的进一步研究提供了有效的方法。文中对目标消声处局部区域声场状况，在主次声源、传声器不同位置下进行了仿真计算，弥补了以往未作这方面分析的不足，为有源消声系统的位置布放提供了依据。更多还原

【Abstract】 ased on the control theory for distributed parameter systems and acoustics theory,the paper distinctly provides the expression on the relation between the control object and the control system,indicates thestability condition and noise cancellation condition that the control system must meet,and provides an efficient method for further study of ANC. The paper offers the emulation calculation for the target in a localsound field under different position arrangements of primary source and secondary source and microphone,improves the calculation of ANC about this aspect, and provides the basis for position arrangement of ANC.更多还原