运七飞机舱内噪声主动控制实验研究

EXPERIMENTAL STUDY ON THE ACTIVE NOISE CONTROL IN THE CABIN OF Y 7

进行了主动噪声控制技术在运七飞机上的应用研究。在大量前期实验和算法分析的基础上，以实验方法进行了源声场及次级声场性能的分析；系统稳定性分析；分析了频率漂移对系统的影响，及收敛因子与系统的优化。最后进行了飞行状态下的噪声控制实验。结果表明本方法是可行的。

Experimental investigation is performed for cabin noise of Y 7 airplane, in which an active noise control technique is employed. Based on the preceding experiments and theoretical analyses, the ability of source sound field and second sound field, the stability of system, the influence of shift of frequency, and the balance between the system and convergent factor are analyzed using experiment. At last, an experiment is achieved in the state of flying. The results show that this method is efficient.