The invention discloses an active noise reduction device and method for a high-speed train pantograph and a bottom cavity system of the high-speed train pantograph. The active noise reduction device comprises an active noise reduction unit and an active noise reduction control unit, the active noise reduction unit comprises an active noise reduction carrier and a noise reduction loudspeaker, the active noise reduction control unit comprises a noise reduction control microcomputer and an ANC noise control unit, the noise reduction control microcomputer is internally provided with a microcomputer control unit, the microcomputer control unit is connected with a control circuit, the control circuit is connected with the pantograph and a bottom cavity system of the pantograph, and the ANC noise control unit comprises a noise acquisition unit and a noise reverse driving unit which are connected. According to the active noise reduction device and method provided by the invention, the noise reduction loudspeaker is controlled by the microcomputer control unit to generate the signal of which the phase is opposite to that of the noise source, so that the noise is reduced or eliminated within a certain frequency domain range, and the aerodynamic noise generated by the pantograph of a high-speed train and a bottom cavity system of the pantograph under high-speed operation can be effectively reduced.
本发明公开了一种用于高速列车受电弓及其底部空腔系统的主动降噪装置和方法,所述主动降噪装置包括主动降噪单元和主动降噪控制单元,主动降噪单元包括主动降噪载体和降噪扬声器,主动降噪控制单元包括降噪控制微机和ANC噪声控制单元,降噪控制微机内设有微机控制单元,微机控制单元连接有控制电路,控制电路与受电弓及其底部空腔系统相连,ANC噪声控制单元包括相连的噪声采集单元和噪声反向驱动单元。本发明提供的主动降噪装置和方法,通过微机控制单元控制降噪扬声器产生与噪声源相位相反的信号,实现噪声在一定频域范围内的降低或消除,可有效降低高速列车的受电弓及其底部空腔系统在高速运行下产生的气动噪声。
Active noise reduction device and method for high-speed train pantograph and bottom cavity system of high-speed train pantograph
一种用于高速列车受电弓及其底部空腔系统的主动降噪装置和方法
2021-07-23
Patent
Electronic Resource
Chinese
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