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“7.23”温甬动车组事故后的一天,因为出差,记者踏上了南下的高速火车。多少有点担心,因为怕动车组出事,多少有点兴奋,因为乘坐上了“传说中”的和谐号高速动车组。飞驰的速度,平稳的运行,明亮舒适的乘坐环境,渐渐打消了我的恐惧,而慢慢对高铁产生了一份敬佩。中国的高速铁路站在了世界的前列, 相似文献
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前言汽车悬架系统一般由弹性元件(弹簧)、阻尼元件(减振器)、导向机构三部分组成,减振器作为阻尼元件是悬架的重要组成元件之一。汽车行驶必然会产生振动,减振器正式为迅速衰减振动而设计的。汽车减振器作为汽车的重要部件,对整车的平顺性、舒适性和动力性、安全性有很大的影 相似文献
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《体育健康知识画刊》2012,(10):98-100
奔驰E系列是奔驰众多车系中最畅销的车型,从第二次世界大战结束后的1947年诞生至今,经过60余年的发展,奔驰E系列已经出产了九代车型。尽管目前在大街上最常见的奔驰E系车型基本上都是北汽集团和奔驰合作后的产品(进行了富有"中国特色"的拉长),但这辆市占率相对较少的原装进口车却更加吸引了我的注意。 相似文献
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The least means squares (LMS) adaptive filter algorithm was used in active suspension system. By adjusting the weight of adaptive filter, the minimum quadratic performance index was obtained. For two-degree-of-freedom vehicle suspension model, LMS adaptive controller was designed. The acceleration of the sprung mass,the dynamic tyre load between wheels and road,and the dynamic deflection between sprung mass and unsprung mass were determined as the evaluation targets of suspension performance. For LMS adaptive control suspension, compared with passive suspension, acceleration power spectral density of sprung mass acceleration under the road input model decreased 8-10 times in high frequency resonance band or low frequency resonance band. The simulation results show that LMS adaptive control is simple and remarkably effective. It further proves that the active control suspension system can improve both the riding comfort and handling safety in various operation conditions, and the method is fit for the active control of the suspension system. 相似文献