加速度變化對(duì)道路平面線形行車舒適性評(píng)價(jià)方法
發(fā)布時(shí)間:2018-01-10 10:01
本文關(guān)鍵詞:加速度變化對(duì)道路平面線形行車舒適性評(píng)價(jià)方法 出處:《廣西師范大學(xué)學(xué)報(bào)(自然科學(xué)版)》2014年02期 論文類型:期刊論文
更多相關(guān)文章: 道路線形 加速度變化 加速度干擾 加速度變化率 行駛舒適性
【摘要】:公路行車舒適性與平面道路線形密切相關(guān),在分析車輛在不同道路線形下運(yùn)行特性的基礎(chǔ)上,提出采用加速度和加速度變化對(duì)道路平面線形舒適性評(píng)價(jià)的方法,闡述橫向加速度、軸向加速度與舒適性的關(guān)系及評(píng)價(jià)指標(biāo)。通過分析加速度的變化對(duì)舒適性的影響,建立加速度變化率模型和加速度干擾模型。用加速度干擾表示速度擺動(dòng)大小和變化頻繁度,給出在直線、緩和曲線、圓曲線路段上加速度干擾的離散化模型。通過對(duì)不同道路線形的實(shí)例仿真,定量分析加速度變化率對(duì)舒適性的影響,以加速度干擾大小分析不同線形路段條件對(duì)行車舒適性的影響程度及變化趨勢(shì),并針對(duì)不同道路線形給出提高舒適性的改善方法。仿真結(jié)果表明,該評(píng)價(jià)方法為檢驗(yàn)道路平面線形舒適性提供了參考依據(jù)。
[Abstract]:Road driving comfort is closely related to planar road alignment. On the basis of analyzing the running characteristics of vehicles under different road alignment, a method for evaluating road planar alignment comfort by using acceleration and acceleration changes is proposed. The relationship between lateral acceleration, axial acceleration and comfort and its evaluation index are described. The influence of acceleration on comfort is analyzed. The acceleration change rate model and the acceleration disturbance model are established. The velocity swing magnitude and variation frequency are expressed by the acceleration interference, and the curve in the straight line is given. The discrete model of acceleration disturbance on circular curve section. Through the simulation of different road alignment, the effect of acceleration change rate on comfort is quantitatively analyzed. According to the magnitude of acceleration interference, the influence degree and change trend of different linear section conditions on driving comfort are analyzed, and the improvement methods for different road alignment are given. The simulation results show that. The evaluation method provides a reference for testing the road plane linear comfort.
【作者單位】: 江西理工大學(xué)電氣工程與自動(dòng)化學(xué)院;華南理工大學(xué)土木與交通學(xué)院;
【基金】:國家自然科學(xué)基金資助項(xiàng)目(61263024,51268017) 江西省教育廳科技項(xiàng)目(GJJ13428)
【分類號(hào)】:U412.3
【正文快照】: 0引言在我國,氋等級(jí)公路的建設(shè)隨著交通需求的增加而不斷增加,道路的設(shè)計(jì)當(dāng)中,線形設(shè)計(jì)在滿足快速、高效、安全的前提下,對(duì)行駛的舒適性提出了更高的要求。現(xiàn)有的道路設(shè)計(jì)中,設(shè)計(jì)者在保證行車安全的條件下,主要考慮車輛動(dòng)力學(xué)方面的影響因素[1],對(duì)道路線形的評(píng)價(jià)主要集中于線,
本文編號(hào):1404804
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