【摘要】：隨著汽車(chē)保有量的不斷增加,汽車(chē)交通事故頻發(fā),這給人們帶來(lái)了大量的經(jīng)濟(jì)財(cái)產(chǎn)損失和嚴(yán)重的人身安全威脅,導(dǎo)致汽車(chē)發(fā)生交通事故的原因有很多,其中“爆胎”是重要原因之一,而且爆胎往往能引發(fā)嚴(yán)重的交通事故。另外現(xiàn)代轎車(chē)多數(shù)采用前置前驅(qū)前轉(zhuǎn)向的布置形式,一旦發(fā)生轉(zhuǎn)向輪的爆胎,車(chē)輛的驅(qū)動(dòng)、轉(zhuǎn)向和制動(dòng)性能都會(huì)發(fā)生劇烈改變,相對(duì)于后輪而言,轉(zhuǎn)向輪的研究意義更大一些。本文在借鑒國(guó)內(nèi)外相關(guān)研究成果的基礎(chǔ)上,以Pacejka89魔術(shù)輪胎為基礎(chǔ),充分考慮了爆胎過(guò)程中爆胎持續(xù)時(shí)間、輪胎的力學(xué)與幾何特性的變化、輪胎胎壓以及各輪胎載荷的轉(zhuǎn)移等因素的影響,建模過(guò)程中通過(guò)對(duì)滾動(dòng)阻力系數(shù)、徑向剛度、側(cè)偏剛度、縱向滑移剛度等幾個(gè)重要變量進(jìn)行適當(dāng)?shù)男拚?來(lái)實(shí)現(xiàn)爆胎后輪胎特性的改變,從而得到了更加準(zhǔn)確的爆胎模型。本文在假設(shè)駕駛員生理和心理狀態(tài)良好的前提下,研究爆胎后駕駛員的典型反應(yīng)(即緊急轉(zhuǎn)向與制動(dòng)),建立爆胎后轉(zhuǎn)向操縱模型和制動(dòng)模型,使用Matlab/Simulink軟件對(duì)模型進(jìn)行了表達(dá),并整合駕駛員模型與修正后的爆胎模型,對(duì)12種不同工況下的爆胎汽車(chē)進(jìn)行了仿真,分析了爆胎后駕駛員不同的操作方法對(duì)汽車(chē)運(yùn)行軌跡和動(dòng)力學(xué)特性的影響,積累了一些數(shù)據(jù),總結(jié)了一些經(jīng)驗(yàn),為車(chē)輛爆胎后駕駛員的應(yīng)急處置提供幫助,也為爆胎后車(chē)輛穩(wěn)定控制系統(tǒng)的研發(fā)提供一定基礎(chǔ)。
[Abstract]:With the continuous increase of vehicle ownership, automobile traffic accidents occur frequently, which brings people a large number of economic and property losses and serious personal safety threats. There are many reasons leading to vehicle traffic accidents. Tire burst is one of the important reasons, and it can cause serious traffic accidents. In addition, most modern cars use the front steering arrangement. Once the tire burst of the steering wheel, the driving, steering and braking performance of the vehicle will change dramatically. Compared with the rear wheel, the research significance of the steering wheel is more significant. In this paper, based on the domestic and foreign related research results, based on Pacejka89 Magic Tire, the change of tire duration, tire mechanical and geometric properties during the process of tire explosion is considered. In the process of modeling, some important variables such as rolling resistance coefficient, radial stiffness, lateral deflection stiffness, longitudinal slip stiffness, and so on, are modified properly in the process of modeling, such as tire pressure and tire load transfer. In order to realize the change of tire characteristics after tire burst, a more accurate tire burst model is obtained. Based on the assumption that the driver is in good physical and psychological condition, this paper studies the typical reaction of the driver after the tire burst (i.e. emergency steering and braking), and establishes the steering control model and braking model after the tire burst. Matlab/Simulink software is used to express the model, and the driver model and modified tire model are integrated to simulate 12 kinds of tire exploding vehicles under different working conditions. This paper analyzes the influence of the driver's different operation methods on the running track and dynamic characteristics of the vehicle after the tire burst, accumulates some data, summarizes some experiences, and provides help for the driver's emergency disposal after the tire burst. It also provides a basis for the research and development of vehicle stability control system after tire burst.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類(lèi)號(hào)】：U463.341

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