An efficient technique for developing the active sound control system in electric vehicle

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Yawei Zhu, Yi Zhang, Liping Xie, Zhien Liu, Chihua Lu
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引用次数: 0

Abstract

The sound characteristic is a critical metric to manifest the brand differentiation of electric vehicle (EV), and the sound design with more diverse acoustic characteristics has become a hot issue in current research of EV technology. In this paper, an efficient technique of active sound design (ASD) is explored to develop the control system of active sound generation (ASG) with powerful sound quality for EV. Firstly, an optimization algorithm of sound synthesis based on multi-frequency superimposition is proposed to improve the harmonic interference phenomenon in the synthesized sounds. Subsequently, an adaptive sound control strategy is formulated, where an iterative accumulation method is proposed to calculate the “virtual engine speed” of EV, and a gain table is presented to divide the running state. Besides, an ASG system is developed based on the proposed ASD technique. The tests result demonstrate that there are 18 target order sounds are reproduced perfectly, and the powerful sound quality interior EV is enhanced while the original interior acoustic environment of EV is retained, which confirms the effectiveness of the proposed control technique of ASG system. The proposed ASD technique here accelerates the change from silence to sound quality in the electric vehicles, which has important theoretical significance and engineering value.
开发电动汽车主动声音控制系统的高效技术
声音特性是体现电动汽车(EV)品牌差异化的关键指标,如何设计出具有更多样化声学特性的声音已成为当前电动汽车技术研究的热点问题。本文探索了一种高效的主动声音设计(ASD)技术,以开发具有强大音质的电动汽车主动声音生成(ASG)控制系统。首先,提出了一种基于多频叠加的声音合成优化算法,以改善合成声音中的谐波干扰现象。随后,制定了一种自适应声音控制策略,提出了一种迭代累积法来计算电动汽车的 "虚拟发动机转速",并给出了一个增益表来划分运行状态。此外,还基于所提出的 ASD 技术开发了 ASG 系统。测试结果表明,有 18 个目标阶次的声音得到了完美再现,在保留电动汽车原有内部声学环境的同时,增强了电动汽车内部的强大音质,这证实了所提出的 ASG 系统控制技术的有效性。所提出的 ASD 技术加速了电动汽车从静音到音质的转变,具有重要的理论意义和工程价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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