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首页> 外文期刊>Transportation Research >Development of a typical driving cycle for an intra-city hybrid electric bus with a fixed route
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Development of a typical driving cycle for an intra-city hybrid electric bus with a fixed route

机译：开发具有固定路线的城市内混合动力公交车的典型行驶周期

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Intra-city buses have become an effective way to alleviate urban traffic congestion. Developing the driving cycle for an intra-city hybrid electric bus is of great importance for energy economy and emissions performances tests, as well as control strategy optimization to enhance fuel economy and reduce emissions. In the construction of the bus driving cycle using the adapted regular method based on kinematic segments with fixed time-steps, the transition of partial kinematic segments leads to velocity fluctuation, which does not reflect the actual driving characteristics. This study initially collects driving data from a hybrid electric bus in Shanghai, and constructs its typical driving cycle by the k-means clustering method. Considering the characteristics of frequent stopping and repetition during the bus driving cycle, the bus-station-based driving cycle segment division method and the whole-trip-based bus driving cycle construction method are proposed. A typical hybrid electric bus driving cycle is then constructed using the proposed methods. Finally, the typical hybrid electric bus driving cycles developed by two methods are compared and analyzed. The 2-norm value of the characteristic parameter error vector is decreased from 0.249 for the typical hybrid electric bus driving cycle based on the adapted regular method to 0.163 for the improved method. It is shown that the whole-trip-based bus driving cycle construction method reflects the actual driving characteristics better, has lighter computation burden, and lays the foundation for the development of an adaptive control strategy for the hybrid electric bus as well as tests of its energy economy and emissions.
机译：城内公交车已成为缓解城市交通拥堵的有效方法。开发城市内混合动力公交车的驾驶循环对于能源经济性和排放性能测试以及控制策略优化以提高燃油经济性和减少排放至关重要。在基于具有固定时间步长的运动段的自适应常规方法构造的公共汽车行驶周期中，部分运动段的过渡会导致速度波动，这不能反映实际的驾驶特性。该研究最初从上海的混合动力公交车收集驾驶数据，然后通过k均值聚类方法构建其典型的驾驶周期。鉴于公交车行驶周期中频繁停车和重复的特点，提出了基于公交车站的行驶周期分段方法和基于全程的公交车行驶周期构造方法。然后，使用所提出的方法来构建典型的混合动力电动公交车行驶周期。最后，对两种方法开发的典型混合动力电动客车行驶周期进行了比较和分析。特征参数误差矢量的2范数值从基于混合规则方法的典型混合动力电动公交车驾驶周期的0.249降低到改进方法的0.163。结果表明，基于全程的公交车驾驶周期构建方法较好地反映了实际的驾驶特性，具有较轻的计算负担，为开发混合动力电动客车的自适应控制策略及其测试奠定了基础。能源经济和排放。

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