基于 AMEsim 的汽車動力傳動系統(tǒng)扭轉振動分析及參數(shù)優(yōu)化

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摘要為研究某前置后驅 MPV 車型存在的傳動系統(tǒng)扭轉振動問題，基于 AMEsim 軟件建立21 自由度傳動系統(tǒng)扭轉振動當量模型，通過自由振動計算以及強迫振動計算對建立的模型進行扭振分析?對車輛進行傳動系統(tǒng)扭轉振動測試，將仿真結果與實驗結果進行對比，分別在模態(tài)頻率以及扭振響應兩個方面驗證仿真模型的準確性?在建立的汽車傳動系統(tǒng)模型基礎上，通過靈敏度分析對模型中的轉動慣量、扭轉剛度以及阻尼進行分析，得到的結論表明六個系統(tǒng)參數(shù)對傳動系統(tǒng)的影響較大?對這些參數(shù)采用基于 Matlab 遺傳算法的多參數(shù)調整，調整后變速器和主減速器處的扭振幅值分別減小了20.16%和23%，較大程度的削減了傳動系統(tǒng)的扭振幅值?

關鍵詞汽車動力傳動系統(tǒng)扭轉振動 AMEsim遺傳算法

中圖分類號 TB533+.2TP391.9

AbstractIn order to study the torsional vibration problem of the transmission system of a front-rear-drive MPV model ， a 21-degree-of-freedom transmission system torsional vibration equivalent model was established based on AMEsim software ， and the torsional vibration analysis of the established model was carried out through free vibration calculation and forced vibration calculation . The torsional vibration test of the vehicle transmission system is carried out ， the simulation results are compared with the experimental results ， and theaccuracy of thesimulation model is verified in two aspects ： Modal frequency and torsional vibration response . Based on the established vehicle transmission system model ， the moment of inertia ， torsional stiffness and damping in the model are analyzed through sensitivity analysis . The conclusions obtained show that the six system parameters have a greater impact on the transmission system.The multi-parameter adjustment based on MATLAB genetic algorithm is adopted for these parameters . After adjustment ， the torsion amplitude values at the transmission and final reducer are reduced by 20.16% and 23% respectively ， which greatly reduces the torsion amplitude of the transmission system.

Key wordsAutomotive powertrain;Torsional vibration;AMEsim;Genetic algorithm

Corresponding author ： DONG XiaoChen ，E-mail ： dongxiaochen2020@163.com

The project supported by the National Natural Science Foundation of China （ No .51605134）.

Manuscript received 20201127 in revised form 20210115.

引言

隨著汽車性能的不斷提高，人們對于汽車的乘坐舒適性提出了更高的要求?因此汽車NVH （ Noise 、Vibration、Harshness ）越來越受到人們的重視?其中汽車動力傳動系統(tǒng)的扭轉振動問題作為一個主要問題顯得十分突出，成為了引起汽車結構振動和噪聲的主要根源之一。（剩余7112字）