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首页> 外文会议>SAE World Congress Exhibition >Development of Feedback-Based Active Road Noise Control Technology for Noise in Multiple Narrow-Frequency Bands and Integration with Booming Noise Active Noise Control System
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Development of Feedback-Based Active Road Noise Control Technology for Noise in Multiple Narrow-Frequency Bands and Integration with Booming Noise Active Noise Control System

机译：基于反馈的基于反馈的有源道路噪声控制技术的开发，用于多窄频带噪声的噪声与蓬勃发展噪声有源噪声控制系统的集成

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摘要

When a vehicle is in motion, noise is generated in the cabin that is composed of noise in multiple narrow-frequency bands and caused by input from the road surface. This type of noise is termed low-frequency-band road noise, and its reduction is sought in order to increase occupant comfort. The research discussed in this paper used feedback control technology as the basis for the development of an active noise control technology able to simultaneously reduce noise in multiple narrow-frequency bands. Methods of connecting multiple single-frequency adaptive notch filters, a type of adaptive filter, were investigated. Based on the results, a method of connecting multiple filters that would mitigate mutual interference caused by different controller transmission characteristics was proposed. This method made it possible to implement controllers with amplitude and phase characteristics in multiple narrow-frequency bands corresponding to design values, and to achieve the target noise-reduction. Additionally, in feedback-based road noise control, the amplitude of the control output signal changes drastically depending on the frequency characteristics of the road surface. When this technology was integrated with the already-commercialized booming noise control system, a method to adjust the range of each controller output automatically was applied, achieving integration while balancing noise reduction performance under normal conditions with control stability when the vehicle passes over a large-input surface.
机译：当车辆运动时，在机舱中产生噪音，该噪声由多个窄频带中的噪声组成并且由路面的输入引起。这种类型的噪声被称为低频带道路噪声，并寻求减少以增加乘员舒适性。本文讨论的研究使用了反馈控制技术作为发展有源噪声控制技术的基础，能够同时降低多个窄频带中的噪声。研究了连接多个单频自适应凹口滤波器，一种自适应滤波器类型的方法。基于结果，提出了一种连接多个滤波器的方法，该方法可以减轻由不同控制器传输特性引起的相互干扰。该方法使得可以在对应于设计值的多个窄频带中实现具有幅度和相位特性的控制器，并且实现目标降噪。另外，在基于反馈的道路噪声控制中，控制输出信号的幅度根据道路表面的频率特性而变化。当该技术与已经商业化的蓬勃噪声控制系统集成时，应用了一种调节每个控制器输出范围的方法，在车辆通过时，在正常条件下平衡降噪性能，同时平衡降噪性能，同时在车辆通过大量的控制稳定性 - 输入表面。

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