本文選題：鉸接式電動(dòng)輪自卸車 + 平順性��； 參考：《西南交通大學(xué)》2015年碩士論文

【摘要】：鉸接式自卸車是為適應(yīng)復(fù)雜路況與惡劣氣候條件應(yīng)運(yùn)而生的一種非公路運(yùn)輸設(shè)備。與剛性自卸車相比,鉸接式自卸車引入了附加的自由度,從而使車輛具有更好的機(jī)動(dòng)性和更廣泛的適應(yīng)性。隨著礦產(chǎn)資源的不斷開采與工程機(jī)械行業(yè)的快速發(fā)展,鉸接式自卸車得到了越來越廣泛的應(yīng)用。因此,建立整車虛擬樣機(jī)動(dòng)力學(xué)模型,研究鉸接式自卸車的動(dòng)力學(xué)性能,對(duì)于鉸接式自卸車的研究與制造具有重要的科研意義和工程應(yīng)用價(jià)值。本文以中國南車廣州電力機(jī)車有限公司研發(fā)的60t鉸接式電動(dòng)輪自卸車為研究對(duì)象,建立了整車虛擬樣機(jī)協(xié)同仿真模型。為搭建與實(shí)際盡可能相符的動(dòng)力學(xué)模型,本文在SIMPACK環(huán)境下建立了多體動(dòng)力學(xué)仿真模型；考慮到鉸接式自卸車在裝配于前、后車體的液壓轉(zhuǎn)向缸筒與轉(zhuǎn)向活塞桿之間存在彈性耦合,本文建立了基于AMESim的全液壓轉(zhuǎn)向系統(tǒng)仿真模型；由于鉸接式電動(dòng)輪自卸車取消了傳動(dòng)軸和軸間差速器等機(jī)構(gòu),為避免在車輛轉(zhuǎn)向時(shí),驅(qū)動(dòng)輪之間發(fā)生拖滑和輪胎的過度磨損,本文設(shè)計(jì)了一種基于“車輪工作狀態(tài)和車輪路面附著特性識(shí)別”的電子差速控制策略,并在Simulink環(huán)境下搭建了采用這種電子差速控制策略的鉸接式自卸車電動(dòng)輪驅(qū)動(dòng)轉(zhuǎn)矩控制模型。為有效集成動(dòng)力學(xué)系統(tǒng)、液壓系統(tǒng)、控制系統(tǒng)仿真模型,本文以Simulink為主仿真環(huán)境,通過軟件接口將SIMPACK多體動(dòng)力學(xué)仿真模型、AMESim全液壓轉(zhuǎn)向系統(tǒng)仿真模型和Simulink電動(dòng)輪驅(qū)動(dòng)轉(zhuǎn)矩控制模型集成到Simulink環(huán)境中,利用參數(shù)關(guān)聯(lián)建立了SIMPACK/AMESim/Simulink協(xié)同仿真模型。在建立了SIMPACK/AMESim/Simulink協(xié)同仿真模型的基礎(chǔ)上,本文參照汽車平順性試驗(yàn)國家標(biāo)準(zhǔn),對(duì)鉸接式自卸車虛擬樣機(jī)進(jìn)行了隨機(jī)路面輸入平順性仿真試驗(yàn)。并參照汽車操縱穩(wěn)定性試驗(yàn)國家標(biāo)準(zhǔn),對(duì)分別采用“等電動(dòng)輪驅(qū)動(dòng)轉(zhuǎn)矩控制策略”與采用“基于車輪工作狀態(tài)和車輪路面附著特性識(shí)別的電動(dòng)輪驅(qū)動(dòng)轉(zhuǎn)矩控制策略”的鉸接式自卸車,進(jìn)行了穩(wěn)態(tài)回轉(zhuǎn)、轉(zhuǎn)向盤角階躍輸入瞬態(tài)響應(yīng)兩項(xiàng)操縱穩(wěn)定性仿真試驗(yàn)。在仿真試驗(yàn)的基礎(chǔ)上,本文依據(jù)相關(guān)標(biāo)準(zhǔn)對(duì)整車平順性和操縱穩(wěn)定性進(jìn)行了評(píng)價(jià)。本文所研究成果為鉸接式電動(dòng)輪自卸車的設(shè)計(jì)提供了理論依據(jù)。
[Abstract]:Articulated dump truck is a kind of non-road transportation equipment which can adapt to complicated road conditions and bad weather conditions. Compared with the rigid dump truck, the articulated dump truck introduces additional degrees of freedom, so that the vehicle has better mobility and wider adaptability. With the continuous exploitation of mineral resources and the rapid development of construction machinery industry, articulated dump trucks have been more and more widely used. Therefore, it is of great significance in scientific research and engineering application for the research and manufacture of articulated dump truck to establish the dynamic model of virtual prototype of the whole vehicle and to study the dynamic performance of the articulated dump truck. In this paper, the virtual prototype collaborative simulation model of 60 t articulated electric wheel dump truck developed by Guangzhou Electric Locomotive Co., Ltd. In order to build a dynamic model that is as consistent as possible with practice, this paper establishes a multi-body dynamics simulation model under the environment of SIMPACK, considering that the articulated dump truck is assembled in front of it. There is an elastic coupling between the hydraulic steering cylinder and the steering piston rod of the rear body. In this paper, the simulation model of the full hydraulic steering system based on AMESim is established, because the articulated electric wheel dump truck cancels the mechanism such as the drive shaft and the differential between the shafts. In order to avoid the drag and slip between the driving wheels and the excessive wear of the tires during the vehicle steering, an electronic differential control strategy based on the recognition of the working state of the wheels and the adhesion characteristics of the wheels is designed in this paper. An electric wheel drive torque control model of articulated dump truck using this electronic differential control strategy is built in Simulink environment. In order to effectively integrate dynamic system, hydraulic system and control system simulation model, Simulink is used as the main simulation environment in this paper. SIMPACK multi-body dynamics simulation model, AMESim full-hydraulic steering system simulation model and Simulink electric wheel drive torque control model are integrated into Simulink environment through the software interface. The SIMPACK / AMESimSimulink collaborative simulation model is established by using parameter correlation. Based on the establishment of SIMPACKR / AMESim-Simulink collaborative simulation model, a random road input ride comfort simulation test was carried out on the virtual prototype of articulated dump truck according to the national standard of vehicle ride comfort test. With reference to the national standards for vehicle handling and stability testing, In this paper, the steady-state rotation is carried out for the articulated dump truck which adopts "equal electric wheel drive torque control strategy" and "electric wheel drive torque control strategy based on wheel working state and wheel road adhesion characteristic identification", respectively. Two simulation tests of steering wheel angle step input transient response are presented. On the basis of simulation test, this paper evaluates the ride comfort and handling stability of the whole vehicle according to the relevant standards. The research results in this paper provide a theoretical basis for the design of articulated electric wheel dump truck.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD562.1

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本文編號(hào)：2103115