The parameter identification of the engine equivalent excitation based on the model of the power train-full vehicle
HE Zhicheng1.2 LIU Hongpu1 HAO Yaodong1 GU Chengbo3
1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082;
2. Chongqing University of Technology, Key Laboratory of Advanced Manufacturing Technology for Automobile Parts, Ministry of Education, Chongqing 400054;
3.ASIN Innovative Design and Manufacturing CO. , LTD, Liuzhou 545000
The extraction of engine excitation for the design of mounting system is of significant, but the engine load identification is given priority to with inverse matrix method with the disadvantage of heavy workload, time-consuming, etc. This paper proposes a new method of the identification of engine excitation：The parameter model of engine equivalent excitation is set up, the acceleration of mount up and down is calculated by loading the excitation to the model of the power train-full vehicle, then the objective function is established based on the difference of the acceleration of experiment and simulation results, the engine multidirectional excitation is finally identified by identifying the parameters of equivalent excitation with genetic algorithm. A car was analyzed with this method, and the acceleration curve fitting degree was high, the load identification results were good; the mounting system was optimized with the load, eventually mounting system under the idle frequency vibration isolation performance greatly enhanced.
何智成 1,2， 刘红谱 1，郝耀东 1，顾成波3. 基于动力总成—整车模型的发动机等效激励参数识别[J]. 振动与冲击, 2017, 36(18): 154-163.
HE Zhicheng1.2 LIU Hongpu1 HAO Yaodong1 GU Chengbo3. The parameter identification of the engine equivalent excitation based on the model of the power train-full vehicle. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(18): 154-163.
[1] 郭荣，章桐.汽车动力总成悬置系统[M].同济大学出版社2013.
GUO Rong, ZHANG Tong. Vechicle Powertrain Mounting System[M]. Tongji University Press, 2013.
[2] Verheij J W. Inverse and reciprocity methods for machinery noise source characterization and sound path quantification part 1:sources [J].International Journal of Acoustics and Vibration, 1997,2(3)：103-112.
[3] 原春晖，朱显明，邵汉林,等.船舶机械振动源激励力的间接估计工程方法[J].中国舰船研究，2006,1(1)：25-32.
YUAN Chunhui, Zhu Xianming, SHAO Hanlin,et al. Engineering Approaches of the Indirect Force Estimation on Vibration Sources of Machinery in Ships[J]. Chinese Journal of Ship Research,2006,1(1)：25-32.
[4] 郭荣，裘剡，房怀庆，等.频域传递路径分析方法(TPA)的研究进展[J].振动与冲击，2013,13(32)：49-55.
GUO Rong, QIU Shan, FANG Huaiqing,et al. Advance in studying on transfer path analysis methods in frequency domain[J].Journal of Vibration and Shock, 2013,13(32)：49-55.
[5] TAO J S，LIU G R,LAM K Y. Excitation force identification of an engine with velocity data at mounting points[J]. Journal of Sound and Vibration, 2001, 242(2)：321-331.
[6] 杨志坚，丁康，徐传燕.基于离散频谱校正的发动机激励力识别方法仿真研究[J].振动工程学报，2010,23(6)：660-664.
YANG Zhijiang, DING Kang, XÜ Chuanyan. Simulation of engine excitation force identification based on discrete spectrum correction[J]. Journal of Vibration Engineering, 2010, 23(6)：660-664.
[7] 朱涛，肖守讷，阳光武.一种新的时域动态载荷识别方法[J].西南交通大学学报，2012,47(6)：968-973.
ZHU Tao, XIAO Shoune, YANG Guangwu. A new time-domain method for force identification[J]. Journal of Southwest Jiaotong University, 2012.47(6)：968-973.
[8] 张颖超，周滢.加窗傅里叶变换在谐波分析中的应用[J].南京信息工程大学学报：自然科学版，2013, 5(6)：544-547.
ZHANG Yingchao, ZHOU Ying. Application of windowed FFT in harmonic analysis[J]. Journal of Nanjing University of Information Science and Technology：Natural Science Edition, 2013, 5(6)：544-547.
[9] 李敏强，等.遗传算法的基本理论与应用[M].北京：科学出版社，2002.
LI Minqiang,et al. Genetic Algorithms Basic Principle and Application[M]. Beijing：Science Press，2002.
[10] 吕兆平.能量法解耦在动力总成悬置系统优化设计中的运用[J].汽车工程，2008, 30(6)：523-526.
LÜ Zhaopin. The Application of Energy Decoupling Technique to Powertrain Mounting System Optimization[J]. Automotive Engineering, 2008, 30(6)：523-526.
[11] 吕振华，罗捷，范让林.汽车动力总成悬置系统隔振设计分析方法[J].中国机械工程，2003, 14(3)：265-269.
LÜ Zhenhua, LUO Jie, FAN ranglin. Design and analysis method for improve vibration isolation performance of automotive powerplant mounting system[J]. China Mechanical Engineering, 2003, 14(3)：265-269.
[12] 上官文斌，黄天平，徐驰，等.汽车动力总成悬置系统振动控制设计计算方法研究[J].振动工程学报，2007,20(6)：577-583.
SHANGGUAN Wen-bin, HUANG Tianping, XÜ Chi,et al. Calculation methods for the vibration control design of a power in mounting system[J]. Journal of Vibration Engineering, 2007, 20(6)：577-583.
[13] 吴飞，胡朝辉，成艾国，等.综合考虑解耦率和隔振率的发动机悬置多目标优化[J].汽车工程，2013,35(1)：18-22.
WU Fei, HU Chaohui, CHENG Aiguo, et al. The Multi-objective Optimization of Engine Mount System Concurrently Considering Energy Decoupling Rate and Vibration Isolation Rate[J]. Automotive Engineering, 2013, 35(1)：18-22.
[14] 王亚楠，吕振华.以广义传递率为目标的动力总成隔振悬置系统优化设机方法[J].机械工程学报，2011,47(11)：52-58.
WANG Yanan, LÜ Zhenhua. Optimal design method of power-train mounting system for generalized force transmissibility reduction[J], journal of mechanical engineering, 2011, 47(11)：52-58.
[15] 庞剑，谌刚，何华.汽车噪声与振动—理论与应用[M].北京理工大学出版社，2006.
PANG Jian, SHEN Gang, HE Hua, et al. Automotive Noise and Vibration-Principle and Application[M]. Beijing Institute of Technology Press, 2006.
