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

【摘要】：近年來,隨著國民經(jīng)濟的持續(xù)快速發(fā)展,對石油化工原料、民用綠色燃料以及其他散裝液體狀貨物的需求越來越大,而汽車液罐車運輸效率高、綜合運輸成本較低,逐漸成為公路運輸液體狀貨物的主體。汽車液罐車裝載質量大、運輸能力強,同時也使得其質心位置較高,輪距相對于整車高度過窄,再加上罐車非滿載條件下行駛時,液體晃動使得整車質心偏移,更是增大了其發(fā)生側翻的可能性。而液罐車運輸?shù)慕橘|大多具有易燃、易爆或有毒的特性,一旦發(fā)生側翻,罐內危險品泄漏后,將會對駕駛員自身與周圍的人身、財產安全造成重大損失,同時也會對環(huán)境造成很大破壞。因此研究汽車液罐車防側翻控制系統(tǒng),對其潛在的側翻危險進行實時的監(jiān)控,主動調整車身姿態(tài),對提高液罐車的側向穩(wěn)定性,避免側翻和危險品泄漏事故的發(fā)生具有重要的意義。本文針對汽車液罐車轉向時,液體晃動使得其側向穩(wěn)定性下降的問題,基于主動橫向穩(wěn)定桿開展液罐車防側翻控制研究,具體研究如下:1)液體受迫晃動動力學分析。根據(jù)液體受迫晃動動力學方程,建立基于歐拉多相流的數(shù)學模型,并運用數(shù)值分析方法研究罐內液體晃動對罐體的影響,在此基礎上分析液體受迫晃動時的質心偏移,將液體晃動對罐車側向穩(wěn)定性的影響等效為液體質心的橫向偏移。2)汽車液罐車動力學建模�；诙囿w動力學仿真軟件ADAMS建立汽車液罐車動力學模型,并通過角階躍轉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量固體的罐車側向穩(wěn)定性參數(shù),研究液體晃動對液罐車側向穩(wěn)定性的影響。3)主動橫向穩(wěn)定桿設計。依據(jù)車輛轉向側傾模型研究橫向穩(wěn)定桿對車輛側向穩(wěn)定性的影響,在此基礎上分析橫向穩(wěn)定桿剛度與其結構尺寸之間的內在關系,并根據(jù)主動橫向穩(wěn)定桿工作特點,設計適用于液罐車的液壓驅動式主動橫向穩(wěn)定桿。4)液罐車主動防側翻控制特性研究�；谥鲃訖M向穩(wěn)定桿,建立以橫向載荷轉移率為控制目標,以模糊PID為控制策略的防側翻控制系統(tǒng),并進行角階躍轉向和正弦角輸入操縱穩(wěn)定性仿真分析,結果表明:主動防側翻系統(tǒng)能夠提高車輛的側向穩(wěn)定性,防止側翻事故的發(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.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：U461.6;U469.61

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