基于路網(wǎng)分層的協(xié)同誘導路徑搜索算法
發(fā)布時間:2018-08-18 14:43
【摘要】:針對交通誘導中的分布式誘導和中心式誘導各自的不足,提出了基于路網(wǎng)分層的協(xié)同式誘導算法。首先,根據(jù)出行偏好,對路網(wǎng)進行了分層,并對不同形式的路徑進行了分析。然后,通過對子區(qū)域中路徑搜索進行動態(tài)搜索限定,提出了基于改進A*的跨層節(jié)點確定方法,在此基礎上建立了基于改進的跨層路徑搜索算法。最后,構建了協(xié)同式誘導算法模型,此模型運用中心式誘導完成主干道路網(wǎng)層交通流的誘導,而分布式誘導完成子區(qū)域小范圍次要路網(wǎng)上的車輛的路徑搜索,并對協(xié)同搜索算法進行了仿真驗證。結果表明:該算法模型相比單一誘導模型計算性能好,平均搜索的效率提高了17.5倍。
[Abstract]:Aiming at the shortcomings of distributed guidance and central guidance in traffic guidance, a collaborative guidance algorithm based on road network stratification is proposed. Firstly, according to the travel preference, the road network is stratified and different kinds of paths are analyzed. Then, by dynamically searching the path search in the sub-region, a cross-layer node determination method based on improved A * is proposed, and then an improved cross-layer path search algorithm is established. Finally, a collaborative guidance algorithm model is constructed, in which the central guidance is used to guide the traffic flow in the main road network, while the distributed guidance is used to complete the vehicle path search in the sub-area of small secondary road network. The collaborative search algorithm is verified by simulation. The results show that the performance of the algorithm is better than that of the single induced model, and the average search efficiency is improved by 17.5 times.
【作者單位】: 公安部交通管理科學研究所;現(xiàn)代城市交通技術江蘇高校協(xié)同創(chuàng)新中心;
【基金】:公安部技術研究計劃項目(2015JSYJB23) 中央級公益性科研院所基本科研業(yè)務費專項資金項目(2016SJA19)
【分類號】:U495
[Abstract]:Aiming at the shortcomings of distributed guidance and central guidance in traffic guidance, a collaborative guidance algorithm based on road network stratification is proposed. Firstly, according to the travel preference, the road network is stratified and different kinds of paths are analyzed. Then, by dynamically searching the path search in the sub-region, a cross-layer node determination method based on improved A * is proposed, and then an improved cross-layer path search algorithm is established. Finally, a collaborative guidance algorithm model is constructed, in which the central guidance is used to guide the traffic flow in the main road network, while the distributed guidance is used to complete the vehicle path search in the sub-area of small secondary road network. The collaborative search algorithm is verified by simulation. The results show that the performance of the algorithm is better than that of the single induced model, and the average search efficiency is improved by 17.5 times.
【作者單位】: 公安部交通管理科學研究所;現(xiàn)代城市交通技術江蘇高校協(xié)同創(chuàng)新中心;
【基金】:公安部技術研究計劃項目(2015JSYJB23) 中央級公益性科研院所基本科研業(yè)務費專項資金項目(2016SJA19)
【分類號】:U495
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