涡桨飞机多通道噪声主动控制系统研究
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摘要
针对适用于涡桨飞机噪声抑制的多通道噪声主动控制系统展开研究。首先,通过推导多通道FXLMS算法,给出其在C6000DSP上的编程实现方法,并对控制算法进行分析和简化。其次,设计涡桨飞机多通道噪声主动控制系统的实现方案,并通过C语言编程实现多通道噪声主动控制软件。最后,在涡桨飞机真实舱段内对该系统进行实验验证,结果显示系统开启后可明显降低舱内噪声,同时验证了系统的稳定性。
This article conducts an investigation in Multiple-Channel Active Control System(ANC) of turboprop aircraft.Firstly,employs the algorithm derivation of Multiple-Channel FXLMS to develop a programmable realization,analyses and predigests the control algorithm to improve efficiency.Then a solution of 4in-2out Multiple-Channel ANC system of turboprop aircraft based on C6000 DSP is designed,and its application software is programmed by using the C language.The experiment shows that 18 dB cancellation on 108 Hz noise is achieved.The stability of the Multiple-Channel ANC system is also proved by the experiment.
引文
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