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321.
Kornel Mucsi Ata M. Khan Mojtaba Ahmadi 《Transportation Research Part C: Emerging Technologies》2011,19(6):1033-1047
Queue management is a valuable but underutilized technique which could be used to minimize the negative impacts of queues during oversaturated traffic conditions. One of the main obstacles of applying queue management techniques along signalized arterials is the unavailability of a robust and sufficiently accurate method for measuring the number of vehicles approaching a signalized intersection. The method based on counting vehicles as they enter and exit a specific detection zone with check-in and check-out detectors is unreliable because of the likely systematic under or over counting and the resulting cumulative errors. This paper describes the application of the Adaptive Neuro-Fuzzy Inference System (ANFIS) in the development of a new fuzzy logic-based approach for estimating the Number of Vehicles in a Detection Zone (NVDZ) by using detector time-occupancy data (instead of detector counts). Microscopic simulation results are used to evaluate the accuracy of the NVDZ estimates. Tests were carried out to determine the transferability of a tuned Fuzzy Inference System (FIS) and to check the sensitivity of the calibrated FIS to detection coverage, the location of the detection zone relative to the signalized (bottleneck) intersection, the length of the detection zone, and different signal timings at the bottleneck intersection. Results show that the NVDZ estimation based on fuzzy logic seems to be a feasible approach. Although the primary objective of developing the NVDZ estimation technique has been queue management, other applications such as ramp metering and incident detection could potentially use the same technique. 相似文献
322.
《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(10):753-770
In this paper, we propose a new yaw moment control based on fuzzy logic to improve vehicle handling and stability. The advantages of fuzzy methods are their simplicity and their good performance in controlling non-linear systems. The developed controller generates the suitable yaw moment which is obtained from the difference of the brake forces between the front wheels so that the vehicle follows the target values of the yaw rate and the sideslip angle. The simulation results show the effectiveness of the proposed control method when the vehicle is subjected to different cornering steering manoeuvres such as change line and J-turn under different driving conditions (dry road and snow-covered). 相似文献
323.
基于模糊神经网络的筑路机械生产率预测方法 总被引:1,自引:0,他引:1
以高等级公路沥青混凝土面层施工机械系统为研究对象,提出了一种施工机械生产率的预测方法,该方法利用神经网络和模糊数学,通过鉴定和收集相关数据,设计了带有模糊输入出系统的神经网络预测模型,该预测方法与现有的统计预测模型相比,使用更加简便,预测结果的准确性更高,该模型是针对沥青路面施工机械提出的,其建模的思想和方法对其他土木工程机械化施工系统也有一定的借鉴意义。 相似文献
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