基于频响函数数据筛选的发动机惯性参数识别

中国机械工程 ›› 2014, Vol. 25 ›› Issue (2): 215-217,235.

基于频响函数数据筛选的发动机惯性参数识别

龙江启1;徐传燕2;高建勋3;周斯加1

1.温州大学,温州,325035
2.山东交通学院,济南,250023
3.浙江春风动力股份有限公司,杭州,311100

出版日期:2014-01-25 发布日期:2014-02-19
基金资助:
国家自然科学基金资助项目(51005078);浙江省自然科学基金资助项目(Y1110046,LQ13E070003)

Identification of Engine Inertia Parameters Based on Frequency Response Function Screening

Long Jiangqi1;Xu Chuanyan2;Gao Jianxun3;Zhou Sijia1

1.Wenzhou University,Wenzhou,Zhejiang,325035 2.Shandong Jiaotong University,Jinan,250023 3.Zhejiang CFMOTO Power Co., Ltd.,Hangzhou,311100

Online:2014-01-25 Published:2014-02-19
Supported by:
National Natural Science Foundation of China（No. 51005078）;Zhejiang Provincial Natural Science Foundation of China（No. Y1110046,LQ13E070003）

摘要/Abstract

摘要：

发动机的惯性参数为质量、质心位置的3个坐标、绕3个轴的转动惯量以及3个惯性积共10个参数。在振动模态试验测试的频响函数基础上，提出了利用质量线识别台架上发动机10个惯性参数的改进方法,较精确地识别了发动机的10个惯性参数。根据一定的误差限水平，筛选合适的激励点和响应点处的频响函数数据,剔除互易性差的数据,提高了识别精度。台架试验验证了所提改进方法的正确性。

关键词: 发动机, 惯性参数, 频响函数, 参数识别

Abstract:

The engine inertia parameters are defined by the mass, the center of gravity, the principle inertia of moments and their associated principle axes. On the basis of FRFs derived from vibration model test, a residual inertia method that allowed the simultaneous estimation of all the ten engine inertia parameters was presented. The method can identify all the ten inertial parameters of the engine accurately. According to a certain error limit level, appropriate FRFs of good reciprocity were selected to improve recognition accuracy. The validity of the presented analysis was confirmed by bench test results.

Key words: engine, inertia parameter, frequency response function(FRF), parametric identification

中图分类号:

TH113
U464

龙江启, 徐传燕, 高建勋, 周斯加. 基于频响函数数据筛选的发动机惯性参数识别[J]. 中国机械工程, 2014, 25(2): 215-217,235.

Long Jiangqi, Xu Chuanyan, Gao Jianxun, Zhou Sijia. Identification of Engine Inertia Parameters Based on Frequency Response Function Screening[J]. China Mechanical Engineering, 2014, 25(2): 215-217,235.

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