發(fā)布時(shí)間：2018-05-03 14:35

  本文選題：交通仿真 + 道路模型�。� 參考：《長安大學(xué)》2014年碩士論文

【摘要】：微觀交通仿真由于能夠真實(shí)地模擬與實(shí)際相似的車輛個(gè)體行為，，并能給出交通系統(tǒng)的各類參數(shù)信息，且能通過計(jì)算機(jī)動(dòng)態(tài)圖形直觀地表現(xiàn)出各類交通措施的效果，成為科學(xué)解決各類交通問題的行之有效的工具。然而，只有在精確、完整的道路路網(wǎng)信息和逼真、高效的車輛行為仿真模型的基礎(chǔ)上，微觀交通仿真才能給出具有實(shí)際參考價(jià)值的仿真結(jié)果。因此，仿真路網(wǎng)的構(gòu)建以及車輛行為的建模就成為微觀交通仿真研究的重點(diǎn)。 為了提高微觀交通仿真中路網(wǎng)的描述能力和構(gòu)建效率，本文提出了一種三層結(jié)構(gòu)的仿真道路模型和基于Google Map的路網(wǎng)構(gòu)建方法。其中道路模型從宏觀、中觀、微觀角度分別由道路、路段和車道組成，整個(gè)路網(wǎng)模型中既包含可在三維仿真場(chǎng)景中構(gòu)建道路的幾何信息，也包含道路各部分間的邏輯關(guān)系信息。通過給出的基于Google Map的路網(wǎng)構(gòu)建方法可以快速自主地構(gòu)建仿真路網(wǎng)，而基于SHP的路網(wǎng)構(gòu)建方法則支持通過已有的SHP文件格式的路網(wǎng)數(shù)據(jù)快速構(gòu)建大規(guī)模仿真路網(wǎng)，兩種構(gòu)建方法都可構(gòu)建出符合道路模型要求的仿真路網(wǎng)。 為了真實(shí)地模擬實(shí)際車輛行為，本文在對(duì)車輛行為的原因及特點(diǎn)進(jìn)行研究的基礎(chǔ)上，給出了仿真車輛的模型設(shè)計(jì)，并將車輛行為分為跟馳行為和換道行為分別進(jìn)行建模。模型可較真實(shí)地模擬車輛的跟馳行為并支持在三維仿真場(chǎng)景下車輛的連續(xù)換道動(dòng)作和軌跡的實(shí)現(xiàn)，通過在車輛模型中加入?yún)?shù)隨機(jī)設(shè)置提高了仿真結(jié)果的多樣性。 最后，本文給出了以文中提出的路網(wǎng)模型和構(gòu)建方法以及車輛行為模型為基礎(chǔ)的軟件設(shè)計(jì)，并實(shí)現(xiàn)了在微觀交通仿真系統(tǒng)中的實(shí)際應(yīng)用，通過對(duì)仿真系統(tǒng)的測(cè)試驗(yàn)證了模型和方法的有效性。
[Abstract]:The microscopic traffic simulation can simulate the individual behavior of the vehicle which is similar to the actual situation, and can give all kinds of parameter information of the traffic system, and can show the effect of all kinds of traffic measures intuitively through the computer dynamic graph. It has become an effective tool to solve all kinds of traffic problems scientifically. However, only on the basis of accurate and complete road network information and realistic and efficient vehicle behavior simulation model, can the microscopic traffic simulation give the simulation results with practical reference value. Therefore, the construction of simulation road network and the modeling of vehicle behavior become the focus of microscopic traffic simulation research. In order to improve the description ability and construction efficiency of road network in microscopic traffic simulation, a three-layer simulation road model and a road network construction method based on Google Map are proposed in this paper. The road model is composed of road, section and lane from macroscopic, mesoscopic and microscopic angles. The whole road network model contains not only the geometric information of the road that can be constructed in the 3D simulation scene, but also the information of the logical relationship between the various parts of the road. The method of road network construction based on Google Map can build the simulation road network quickly and autonomously, while the road network construction method based on SHP supports the rapid construction of large-scale simulation road network through the existing network data of SHP file format. Both methods can construct the simulation road network which meets the requirements of the road model. In order to simulate the actual vehicle behavior, based on the study of the reasons and characteristics of the vehicle behavior, the model design of the simulation vehicle is given, and the vehicle behavior is divided into car-following behavior and changing the path behavior respectively. The model can simulate the car-following behavior of the vehicle and support the realization of the continuous change of track and track in the 3D simulation scene. The diversity of the simulation results is improved by adding the random setting of the parameters to the vehicle model. Finally, this paper gives the software design based on the proposed road network model and vehicle behavior model, and realizes the practical application in the microscopic traffic simulation system. The validity of the model and method is verified by testing the simulation system.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP391.9;U495

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