基于EKF-BP网络的矿用自卸车轮胎材料参数辨识

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (17) : 71-76.

论文

张菲菲1 谷正气1,2 张沙1 马骁骙1 朱一帆1

作者信息 +

Tire Material Parameters Identification of Mining Dump Truck Based on EKF-BP

Zhang Feifei 1 Gu Zhengqi 1,2 Zhang Sha1 Ma Xiaokui1 Zhu Yifan1

Author information +

文章历史 +

摘要

轮胎材料参数对轮胎有限元模型至关重要，但轮胎材料多，结构复杂，导致轮胎材料参数难以获取，对此提出利用扩展卡尔曼（EKF）优化的BP神经网络辨识轮胎材料参数的方法。基于轮胎有限元模型，模拟了轮胎脉冲工况动态仿真，将仿真得到的轮胎垂向加速度作为网络理想输入样本，将需要辨识的轮胎材料参数作为网络理想输出样本，通过网络训练，建立两者之间的非线性映射网络模型。将经过小波去噪的轮胎垂向加速度试验数据输入训练好的网络，有效辨识出了轮胎材料参数。通过材料参数辨识的轮胎模型在相应工况下的仿真数据与试验数据的对比，显示两者最大误差为6.45%，证明了基于材料参数辨识的轮胎有限元模型垂向特性的准确性。

Abstract

Tire material parameters on tire finite element model is very important, but the tire material is more and the structure is complex,leading to the tire material parameters are difficult to obtain, the method of using BP neural network which is optimized by Extend Kalman filter to identify the tire parameters is proposed. The dynamic simulation of the tire pulse condition is simulated based on the tire finite element model, The tire acceleration that is obtained by simulating is regarded as an ideal input sample of neural network,and the tire material parameters that is need to identify is regarded as an ideal output sample of neural network, then the nonlinear mapping network model between them is built by network training. The tire vertical acceleration test data which are denoised by wavelet input trained network, can effectively identify tire material parameters. Through the comparison of simulation data under corresponding conditions and the experimental data, show that the biggest error is 6.45%, it is proved that the accuracy of the vertical characteristics of tire finite element model based on the identification of material parameters.

导出引用

张菲菲1 谷正气1,2 张沙1 马骁骙1 朱一帆1. 基于EKF-BP网络的矿用自卸车轮胎材料参数辨识[J]. 振动与冲击, 2016, 35(17): 71-76

Zhang Feifei 1 Gu Zhengqi 1,2 Zhang Sha1 Ma Xiaokui1 Zhu Yifan1 . Tire Material Parameters Identification of Mining Dump Truck Based on EKF-BP[J]. Journal of Vibration and Shock, 2016, 35(17): 71-76

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