發(fā)布時(shí)間：2018-05-13 03:04

  本文選題：液罐車 + 液體晃動(dòng)　； 參考：《重慶交通大學(xué)》2016年碩士論文

【摘要】：近年來(lái),隨著國(guó)民經(jīng)濟(jì)的持續(xù)快速發(fā)展,對(duì)石油化工原料、民用綠色燃料以及其他散裝液體狀貨物的需求越來(lái)越大,而汽車液罐車運(yùn)輸效率高、綜合運(yùn)輸成本較低,逐漸成為公路運(yùn)輸液體狀貨物的主體。汽車液罐車裝載質(zhì)量大、運(yùn)輸能力強(qiáng),同時(shí)也使得其質(zhì)心位置較高,輪距相對(duì)于整車高度過(guò)窄,再加上罐車非滿載條件下行駛時(shí),液體晃動(dòng)使得整車質(zhì)心偏移,更是增大了其發(fā)生側(cè)翻的可能性。而液罐車運(yùn)輸?shù)慕橘|(zhì)大多具有易燃、易爆或有毒的特性,一旦發(fā)生側(cè)翻,罐內(nèi)危險(xiǎn)品泄漏后,將會(huì)對(duì)駕駛員自身與周圍的人身、財(cái)產(chǎn)安全造成重大損失,同時(shí)也會(huì)對(duì)環(huán)境造成很大破壞。因此研究汽車液罐車防側(cè)翻控制系統(tǒng),對(duì)其潛在的側(cè)翻危險(xiǎn)進(jìn)行實(shí)時(shí)的監(jiān)控,主動(dòng)調(diào)整車身姿態(tài),對(duì)提高液罐車的側(cè)向穩(wěn)定性,避免側(cè)翻和危險(xiǎn)品泄漏事故的發(fā)生具有重要的意義。本文針對(duì)汽車液罐車轉(zhuǎn)向時(shí),液體晃動(dòng)使得其側(cè)向穩(wěn)定性下降的問(wèn)題,基于主動(dòng)橫向穩(wěn)定桿開展液罐車防側(cè)翻控制研究,具體研究如下:1)液體受迫晃動(dòng)動(dòng)力學(xué)分析。根據(jù)液體受迫晃動(dòng)動(dòng)力學(xué)方程,建立基于歐拉多相流的數(shù)學(xué)模型,并運(yùn)用數(shù)值分析方法研究罐內(nèi)液體晃動(dòng)對(duì)罐體的影響,在此基礎(chǔ)上分析液體受迫晃動(dòng)時(shí)的質(zhì)心偏移,將液體晃動(dòng)對(duì)罐車側(cè)向穩(wěn)定性的影響等效為液體質(zhì)心的橫向偏移。2)汽車液罐車動(dòng)力學(xué)建模。基于多體動(dòng)力學(xué)仿真軟件ADAMS建立汽車液罐車動(dòng)力學(xué)模型,并通過(guò)角階躍轉(zhuǎn)向和正弦角輸入操縱穩(wěn)定性仿真分析裝載液體和同等質(zhì)量固體的罐車側(cè)向穩(wěn)定性參數(shù),研究液體晃動(dòng)對(duì)液罐車側(cè)向穩(wěn)定性的影響。3)主動(dòng)橫向穩(wěn)定桿設(shè)計(jì)。依據(jù)車輛轉(zhuǎn)向側(cè)傾模型研究橫向穩(wěn)定桿對(duì)車輛側(cè)向穩(wěn)定性的影響,在此基礎(chǔ)上分析橫向穩(wěn)定桿剛度與其結(jié)構(gòu)尺寸之間的內(nèi)在關(guān)系,并根據(jù)主動(dòng)橫向穩(wěn)定桿工作特點(diǎn),設(shè)計(jì)適用于液罐車的液壓驅(qū)動(dòng)式主動(dòng)橫向穩(wěn)定桿。4)液罐車主動(dòng)防側(cè)翻控制特性研究�；谥鲃�(dòng)橫向穩(wěn)定桿,建立以橫向載荷轉(zhuǎn)移率為控制目標(biāo),以模糊PID為控制策略的防側(cè)翻控制系統(tǒng),并進(jìn)行角階躍轉(zhuǎn)向和正弦角輸入操縱穩(wěn)定性仿真分析,結(jié)果表明:主動(dòng)防側(cè)翻系統(tǒng)能夠提高車輛的側(cè)向穩(wěn)定性,防止側(cè)翻事故的發(fā)生。
[Abstract]:In recent years, with the continuous and rapid development of the national economy, the demand for petrochemical raw materials, civil green fuel and other bulk liquid goods is increasing, while the transportation efficiency of automobile liquid tank truck is high, and the integrated transportation cost is low. It has gradually become the main body of liquid goods transported by road. The liquid tank truck has the advantages of high loading quality, strong transportation capacity, high center of mass, narrow wheel spacing relative to the height of the whole vehicle, and liquid sloshing makes the center of mass of the whole vehicle shift when the tank car is running under the condition of non-full load. It also increases the possibility of rollover. However, most of the medium transported by the liquid tank truck has the characteristics of flammability, explosive or toxic. Once the rollover occurs and the dangerous goods in the tank leak, it will cause great losses to the safety of the driver himself and the surrounding person and property. It can also cause great damage to the environment. Therefore, the anti-roll control system of vehicle liquid tank vehicle is studied, the potential rollover danger is monitored in real time, the body posture is adjusted actively, and the lateral stability of liquid tank car is improved. It is of great significance to avoid rollover and dangerous goods leakage accidents. Aiming at the problem that liquid sloshing reduces the lateral stability of liquid tank truck when it is steering, based on the active lateral stabilizer, the anti-roll control of liquid tank car is studied in this paper. The detailed research is as follows: 1) dynamic analysis of forced sloshing of liquid. According to the dynamic equation of forced sloshing of liquid, a mathematical model based on Euler multiphase flow is established, and the influence of liquid sloshing on tank body is studied by using numerical analysis method. On this basis, the centroid migration of liquid under forced sloshing is analyzed. The effect of liquid sloshing on the lateral stability of the tank car is equivalent to the lateral displacement of the liquid centroid. 2) the dynamic model of the liquid tank car is established. Based on the multi-body dynamics simulation software ADAMS, the dynamic model of the liquid tank car is established, and the lateral stability parameters of the tank truck loaded with liquid and the same mass solid are analyzed by the angle step steering and sinusoidal angle input control stability simulation. The influence of liquid sloshing on lateral stability of liquid tank car was studied. Based on the vehicle steering roll model, the influence of the lateral stabilizer rod on the lateral stability of the vehicle is studied. On this basis, the inherent relationship between the stiffness of the lateral stabilizer rod and its structural size is analyzed, and according to the working characteristics of the active lateral stabilizer rod, The design of hydraulic driven active lateral stabilizer. 4) the control characteristics of active roll control of liquid tank truck. Based on the active lateral stabilizer rod, an anti-rollover control system with lateral load transfer rate as control target and fuzzy PID as control strategy is established, and the simulation analysis of angle step steering and sinusoidal angle input manipulation stability is carried out. The results show that the active roll control system can improve the lateral stability of the vehicle and prevent the rollover accident.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：U461.6;U469.61

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