宽窄带混合主动噪声控制系统高效稳健算法及应用研究

项目名称： 宽窄带混合主动噪声控制系统高效稳健算法及应用研究

项目编号： No.61471140

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 孙金玮

作者单位： 哈尔滨工业大学

项目金额： 75万元

中文摘要： 主动噪声控制（ANC）在噪声抑制领域具有重要应用价值，可以弥补被动降噪的不足。目前ANC在管道噪声抑制上取得了显著效果，但实际环境噪声的非平稳性、宽带和窄带混合特征、频率失调、次级通道非线性等问题，严重影响了ANC系统性能，制约了ANC在复杂环境中的应用。对此，本项目在理论层面拟研究基于宽窄带混合结构的主动噪声控制系统，通过引入自适应变步长方法、加权平均代价函数、宽窄带混合结构、双输入抗频率失调结构和自适应网络模糊推理模型，提升系统在复杂环境噪声下追踪能力、收敛速度、稳态误差、实时性和鲁棒性等综合性能。在应用层面，将一维管道试验平台扩展到封闭空间，针对厂房、飞机客舱等特定空间进行声场建模、仿真和实验研究，优化模型参数，验证和改进算法性能。课题的创新性成果将极大地提升复杂环境ANC系统的理论和应用水平。

中文关键词： 主动噪声控制；宽窄带混合结构；自适应变步长；频率失调；非平稳噪声

英文摘要： Active noise control (ANC) has important applications in the field of noise suppression and can compensate the shortcomings of passive noise control (PNC). So far, ANC has achieved remarkable effect on reducing noise in duct, however, both the system performance and effectiveness have been restricted due to nonstationarity of practical environment noises, wideband and narrowband mixing characteristics, frequency mismatch, nonlinear secondary paths and many other factors. In this project, we plan to response above problems in theory and practice. Theoretically a high performance active noise control system will be studied by introducing the adaptive variable step-size algorithm, weighted average cost function, broadband and narrowband hybrid structure, double input structure immune to frequency mismatch, and adaptive network-based fuzzy inference system (ANFIS) model. The comprehensive system performance under complex environments will be achieved including fast tracking ability, reasonable convergence speed, small steady-state error, strong robustness, etc. In addition, we will conduct many simulations and experiments to optimize system model parameters, validate and improve corresponding algorithms, such as expanding current one-dimensional pipe platform to an enclosed space, formulating ANC models in large factories, aircraft cabin and other tough situations. The project's innovative achievements will greatly enhance the level of ANC theory and applications in complex environments.

英文关键词： Active noise control;broadband and narrowband hybrid structure;adaptive variable step-size;frequency mismatch;nonstationary noise