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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Road profile effects on the performance and energy regeneration of the electromagnetic suspension system
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Road profile effects on the performance and energy regeneration of the electromagnetic suspension system

机译：道路轮廓对电磁悬架系统的性能和能量再生的影响

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This paper deals with the electromagnetic damper, which is composed of a permanent-magnet DC motor, a ball screw and a nut, as the passive, semi-active and active actuator in the vehicle suspension system. The main objective pursued in the paper is to study the dependences of the performance and energy regeneration of the electromagnetic suspension system on the road unevenness and the travel speed. For this purpose, the nonlinear equations of the electromagnetic damper electric circuit in the three mentioned suspension systems are developed. For the vehicle passing over the road unevenness, a seven degrees of freedom model is considered, and the simplest point-follower model is used for the tyre representation. To investigate the electromagnetic suspension system performance and energy regeneration, two types of road unevenness including a road section with a standard pure random profile and a bump modelled by cosine wave of variable height and length are applied. The simulation results demonstrate that an increase in the travel speed leads to the power spectral density increment of the road profile and in turn causes the negative effects on the performance and growth in the energy regeneration. Furthermore, when the bump height gets larger, maximum body acceleration, maximum suspension travel and energy regeneration will increase. There will be a peak on the maximum body acceleration response course when the bump length is equal to 1.1 m because of exciting the sprung mass frequencies. On the maximum suspension travel and energy regeneration response course, there is a peak when the travel speed is equal to 30 km/h, which excites the unsprung mass frequencies.
机译：本文研究了电磁阻尼器，它由永磁直流电动机，滚珠丝杠和螺母组成，作为车辆悬架系统中的被动，半主动和主动执行器。本文的主要目的是研究电磁悬架系统的性能和能量再生对道路不平和行驶速度的依赖性。为此，建立了上述三个悬架系统中电磁阻尼器电路的非线性方程。对于越过道路不平整度的车辆，考虑使用七个自由度模型，并且将最简单的点跟随模型用于轮胎表示。为了研究电磁悬架系统的性能和能量再生，应用了两种类型的道路不平整度，包括具有标准纯随机轮廓的路段和通过可变高度和长度的余弦波建模的颠簸。仿真结果表明，行进速度的提高导致道路轮廓的功率谱密度增加，进而对能量再生的性能和增长产生负面影响。此外，当保险杠高度变大时，最大车身加速度，最大悬架行程和能量再生将增加。当凸点长度等于1.1 m时，由于激发弹簧质量频率，最大人体加速度响应过程将出现一个峰值。在最大悬架行驶和能量再生响应过程中，当行驶速度等于30 km / h时会出现一个峰值，这激发了未悬挂的质量频率。

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