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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part D. Journal of Automobile Engineering >Wavelet analysis of high-frequency damper behaviour
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Wavelet analysis of high-frequency damper behaviour

机译：高频阻尼器行为的小波分析

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This paper describes research into the performance of a hydraulic automotive damper at frequencies up to 500 Hz. A review of published literature found little information on damper behaviour above 30 Hz. Design of vehicles for low levels of noise, vibration, and harshness (NVH) requires attention to these higher frequencies. The high-frequency force-velocity behaviour of a monotube damper was measured. Excitations included two-frequency inputs and a random input. In addition to traditional data analysis methods, techniques based on the wavelet transform were used. The results indicate that friction and hydraulic valve flow at near-zero velocity are important mechanisms in determining high-frequency force generation. Another significant mechanism is the transition between notch (leakage) flow and disc valve flow.
机译：本文介绍了对频率高达500 Hz的汽车液压减震器性能的研究。对已发表文献的评论发现，关于30 Hz以上的阻尼器性能的信息很少。为降低噪声，振动和粗糙度（NVH）的水平而设计的车辆需要注意这些较高的频率。测量了单管阻尼器的高频力-速度行为。激动人心的包括两频输入和随机输入。除了传统的数据分析方法外，还使用了基于小波变换的技术。结果表明，摩擦力和液压阀流量接近零是决定高频力产生的重要机制。另一个重要的机制是缺口（泄漏）流量和碟形阀流量之间的过渡。

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