本文選題：雙離合自動變速器　切入點：運動學(xué)　出處：《合肥工業(yè)大學(xué)》2014年碩士論文

【摘要】：變速器作為汽車動力總成的重要組成部分,其傳動性能的好壞對整車的性能有著重要的影響。隨著汽車工業(yè)的發(fā)展,電子化程度的提高,變速器領(lǐng)域也取得長足的進步,雙離合自動變速器應(yīng)運而生。DCT由MT發(fā)展而來,它不僅具有AT動力換擋的特點,而且繼承了AMT結(jié)構(gòu)簡單,傳動效率高的優(yōu)點。所以,DCT不僅保證了車輛的動力性和經(jīng)濟性,而且還提高了乘駕的舒適性。 本文依托合肥工業(yè)大學(xué)汽車工程研究院變速器研發(fā)項目,研發(fā)一款新型雙離合自動變速器。學(xué)習(xí)變速器研發(fā)的核心技術(shù),打破國外的技術(shù)壟斷,掌握自主知識產(chǎn)權(quán),對促進我國汽車工業(yè)特別是變速器領(lǐng)域的發(fā)展具有重要的意義。研究中采用了參數(shù)化設(shè)計和虛擬樣機技術(shù)相結(jié)合的設(shè)計方法,極大的縮短變速器研發(fā)周期和降低了研發(fā)的成本,研究結(jié)果為樣機的試制提供了理論依據(jù)。本文對變速器的研究工作主要包含以下幾點： (1)闡述了新型雙離合自動變速器的工作原理和結(jié)構(gòu)特點。運用參數(shù)化的設(shè)計方法,在PRO/E軟件上建立變速器傳動機構(gòu)的三維模型,虛擬裝配并進行干涉分析,以檢驗虛擬裝配完成后有無干涉現(xiàn)象的發(fā)生。 (2)利用ADAMS和PRO/E之間的接口,將變速器三維模型導(dǎo)入ADAMS軟件中,建立多剛體運動學(xué)模型,進行運動學(xué)仿真分析。將運動學(xué)仿真結(jié)果與理論計算進行對比分析。 (3)在ADAMS軟件中建立變速器傳動系統(tǒng)的多剛體動力學(xué)模型,模擬變速器傳動過程中,在穩(wěn)定載荷的作用下,二檔傳動齒輪以及行星輪系齒輪的嚙合碰撞情況。通過理論計算和仿真分析相結(jié)合的方法,論證模型的正確性。 (4)運用多目標(biāo)函數(shù)優(yōu)化方法中的NSGA-II優(yōu)化算法,對變速器中核心傳動機構(gòu)行星輪系的結(jié)構(gòu)尺寸進行優(yōu)化。
[Abstract]:Transmission as an important part of automobile power assembly, its transmission performance has an important impact on the performance of the whole car. With the development of automobile industry and the improvement of electronic degree, the transmission field has also made great progress. The dual clutch automatic transmission is developed by MT. It not only has the characteristics of AT power shift, but also inherits the advantages of simple structure and high transmission efficiency of AMT. It also improves the ride comfort. Based on the transmission R & D project of Automotive Engineering Research Institute of Hefei University of Technology, this paper develops a new type of double clutch automatic transmission. We study the core technology of transmission research and development, break the foreign technological monopoly, and master our own intellectual property rights. It is of great significance to promote the development of automobile industry in China, especially in the field of transmission. In the research, a design method combining parametric design and virtual prototyping technology is adopted, which greatly shortens the research and development cycle of transmission and reduces the cost of research and development. The research results provide a theoretical basis for the trial production of the prototype. The research work of this paper mainly includes the following points:. In this paper, the working principle and structural characteristics of the new type double clutch automatic transmission are expounded. By using the parameterized design method, the three-dimensional model of the transmission transmission mechanism is established on the PRO/E software, the virtual assembly is carried out and the interference analysis is carried out. In order to verify the virtual assembly after the completion of the phenomenon of interference. 2) using the interface between ADAMS and PRO/E, the three-dimensional model of transmission is imported into ADAMS software, and the kinematics simulation analysis is carried out by establishing a multi-rigid body kinematics model, and the kinematics simulation results are compared with the theoretical calculation. In ADAMS software, the multi-rigid dynamic model of transmission transmission system is established to simulate the transmission transmission under the action of steady load. The meshing collision of two gear transmission gears and planetary gear train gears is proved by combining theoretical calculation and simulation analysis to prove the correctness of the model. 4) using the NSGA-II optimization algorithm in the multi-objective function optimization method, the structure size of the planetary gear train of the core drive mechanism in the transmission is optimized.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U463.212

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