本文選題：半掛汽車　切入點(diǎn)：TTR預(yù)警　出處：《重慶理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著物流行業(yè)和高速公路的快速發(fā)展,半掛汽車以其運(yùn)載量大、相對運(yùn)輸成本低等優(yōu)點(diǎn)逐漸成為了公路運(yùn)輸?shù)闹饕囆椭�。但是由于半掛汽車質(zhì)心位置較高、輪距相對于車身過窄等一系列特點(diǎn),使其側(cè)傾穩(wěn)定性較差,極易發(fā)生側(cè)翻危險,因此,如何及時告知駕駛員車輛的側(cè)翻危險狀態(tài)并對車輛的危險狀況進(jìn)行適時的控制,成為解決半掛汽車側(cè)翻的有效途徑。針對半掛汽車的側(cè)翻穩(wěn)定性問題,本文主要進(jìn)行了以下幾個方面的研究:首先,本文在閱讀大量國內(nèi)外文獻(xiàn)的基礎(chǔ)上對半掛汽車的側(cè)翻穩(wěn)定性機(jī)理以及影響側(cè)翻穩(wěn)定性的因素進(jìn)行了分析,確定了提高半掛汽車側(cè)傾穩(wěn)定性的方法:一方面利用側(cè)翻預(yù)警技術(shù)對駕駛員的危險駕駛行為進(jìn)行提醒,以期通過駕駛員的操作來阻止側(cè)翻危險的發(fā)生;另一方面利用主動防側(cè)傾桿對駕駛員來不及做出有效操作的危險狀況進(jìn)行主動控制。其次,本文建立了可以反映半掛汽車橫擺-側(cè)傾運(yùn)動的九自由度剛性車身半掛汽車列車預(yù)測模型,并利用專業(yè)仿真軟件Trucksim進(jìn)行了仿真驗證。以建立的九自由度模型作為側(cè)翻預(yù)警參考模型,以橫向載荷轉(zhuǎn)移率作為半掛汽車的側(cè)翻指標(biāo),建立了可以超實時預(yù)測半掛汽車側(cè)翻危險狀態(tài)的TTR側(cè)翻預(yù)警算法,通過在不同工況下的仿真驗證了該預(yù)警算法的準(zhǔn)確性。最后,為了減輕減駕駛員的操作負(fù)擔(dān)并進(jìn)一步提高車輛的側(cè)傾穩(wěn)定性,采用在半掛汽車車軸上加裝主動防側(cè)傾桿的方法來提高其側(cè)傾穩(wěn)定性,并利用擴(kuò)展的線性二次型狀態(tài)調(diào)節(jié)器產(chǎn)生最優(yōu)的控制力矩,在雙移線工況下進(jìn)行了仿真分析,表明了該控制方法的有效性。針對連續(xù)性控制系統(tǒng)能耗大、壽命低的缺點(diǎn),提出基于TTR預(yù)警的防側(cè)翻控制策略,實現(xiàn)了間斷性控制,并與連續(xù)性控制效果進(jìn)行了對比,表明基于TTR預(yù)警的防側(cè)翻控制策略不僅可以有效的提高半掛汽車的側(cè)傾穩(wěn)定性,而且節(jié)約了能耗,提高了防側(cè)翻裝置的壽命。
[Abstract]:With the rapid development of logistics industry and freeway, semi-trailer has gradually become one of the main types of highway transportation because of its advantages such as large transportation capacity and relatively low transportation cost, but because of the high centroid position of semi-trailer, Due to a series of characteristics such as too narrow wheel spacing and so on, the roll stability is poor and the rollover danger is easy to occur. Therefore, how to inform the driver of the rollover dangerous state in time and control the dangerous condition of the vehicle timely, As an effective way to solve the rollover problem of semi-trailer, this paper mainly studies the following aspects: first, On the basis of reading a large number of domestic and foreign literatures, this paper analyzes the mechanism of rollover stability of semitrailer and the factors affecting rollover stability. The methods to improve the roll stability of semi-trailer vehicle are determined as follows: on the one hand, the warning technology is used to warn the driver of dangerous driving behavior in order to prevent the rollover danger from happening through the driver's operation; On the other hand, the active anti-roll lever is used to control the dangerous situation of the driver who has no time to make effective operation. Secondly, In this paper, a prediction model of nine degrees of freedom (DOF) rigid body semi-trailer train is established, which can reflect the swing and roll motion of semi-trailer. The Nine degree of freedom model is used as the early warning reference model, and the lateral load transfer rate is used as the index of the roll over of the semi-trailer vehicle, which is verified by the professional simulation software Trucksim. A TTR rollover early warning algorithm which can predict the dangerous state of semi-trailer rollover in real time is established. The accuracy of the early warning algorithm is verified by simulation under different working conditions. In order to reduce the operating burden of the driver and further improve the roll stability of the vehicle, the active anti-roll rod was added to the axle of the semi-trailer to improve the roll stability. By using the extended linear quadratic state regulator to generate the optimal control torque, the simulation analysis is carried out under the condition of double moving line, which shows the effectiveness of the control method, aiming at the disadvantages of large energy consumption and low service life of the continuous control system. The anti-roll control strategy based on TTR early warning is put forward, and the intermittent control is realized, and compared with the effect of continuous control, it shows that the anti-roll control strategy based on TTR warning can not only effectively improve the roll stability of semi-trailer vehicle. Moreover, the energy consumption is saved and the life of the anti-roll device is improved.
【學(xué)位授予單位】：重慶理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U469.53

【共引文獻(xiàn)】

相關(guān)期刊論文 前4條

1 歐健;李偉;張勇;楊鄂川;鄧國紅;;柔性車身半掛汽車列車側(cè)傾模型的建立與仿真分析[J];重慶理工大學(xué)學(xué)報(自然科學(xué));2013年03期

2 黃亞飛;閔衡;戴芳慶;;嬰兒手推車一體化智能裝置的設(shè)計[J];大學(xué)教育;2013年12期

3 余貴珍;李芹;王云鵬;王迪;;車輛彎道行駛側(cè)傾穩(wěn)定性分析與側(cè)翻預(yù)警研究[J];北京工業(yè)大學(xué)學(xué)報;2014年04期

4 張志勇;譚濤;劉鑫;杜榮華;;客車側(cè)翻評價指標(biāo)的估計與灰色預(yù)測研究[J];中國安全科學(xué)學(xué)報;2015年08期

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本文編號：1586710