基于胎内应变分析的重载轮胎垂向力与侧偏力联合估计算法  

Joint estimation algorithm of vertical force and lateral force of heavy-duty tire based on internal strain analysis of tire

作　　者：刘钇汛 刘志浩 高钦和 马超群 刘相新[2] 张佳林[2] LIU Yixun;LIU Zhihao;GAO Qinhe;MA Chaoqun;LIU Xiangxin;ZHANG Jialin(School of Missile Engineering,Rocket Force University of Engineering,Xi’an 710025,China;Beijing Institute of Space Launch Technology,Beijing 100076,China)

机构地区：[1]火箭军工程大学导弹工程学院,西安710025 [2]北京航天发射技术研究所,北京100076

出　　处：《北京航空航天大学学报》2024年第11期3532-3541,共10页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金(52472464)。

摘　　要：为实现对轮胎侧偏力的估计,提出一种基于胎内周向应变分析的重载轮胎垂向力与侧偏力联合估计算法。以16.00R20重载轮胎为研究对象,建立了轮胎有限元模型,并开展了垂向刚度和振动特性试验验证了模型的有效性。基于轮胎内衬层周向应变信号分析,建立了周向应变曲线峰值间距角与接地角和接地长度的关联性模型,对比了静载、滚动、侧偏等工况下的表征精度;通过胎内对称点位周向应变分析,提取侧偏力表征特征,分析了垂向力与侧偏力表征特征的线性关系;建立了基于支持向量回归机的垂向力与侧偏力联合估计模型,先以接地角和接地长度为输入识别特征实现对垂向力的估计,进而通过侧偏力表征特征结合垂向力估计对侧偏力进行估计,通过有限元试验验证了模型估计精度。结果表明:以应变曲线零阶和一阶峰值间距角均值对接地角与接地长度的表征误差在4.5%以内;所提算法适用于静载、滚动、侧偏工况,能准确估算垂向力和侧偏力,估计值与有限元仿真值误差小于3%。In order to estimate the lateral force of a tire,this paper proposed a joint estimation algorithm of vertical force and lateral force of a heavy-duty tire based on internal circumferential strain analysis of the tire.A 16.00R20 heavy-duty tire was taken as the research object,and the finite element model of the tire was established.The tests on vertical stiffness and vibration characteristics were carried out to verify the validity of the model.Based on the circumferential strain signal analysis of the tire liner,the correlation model of the peak spacing angle of the circumferential strain curve with the grounding angle and the grounding length was established,and the characterization accuracy under static load,rolling,and lateral force conditions was compared.Through the internal circumferential strain analysis of the symmetrical point of the tire,the characterization feature of the lateral force was extracted,and the linear relationship between the characterization feature and the vertical force was analyzed.The joint estimation model of vertical force and lateral force based on support vector regression was established,and the vertical force was estimated by using grounding angle and grounding length as input recognition features.Then,the lateral force was estimated by characterization features of lateral force combined with vertical force estimation.The estimation accuracy of the model was verified by a finite element test.The results indicate that the characterization error of grounding angle and grounding length based on zero-order and first-order peak spacing angle of the strain curve is less than 4.5%.The joint estimation algorithm of vertical force and lateral force based on internal strain analysis of the tire is suitable for static load,rolling,and lateral force conditions and can accurately estimate the vertical force and lateral force.The error between the estimated value and the finite element simulation value is less than 3%.

关 键 词：有限元仿真 周向应变 支持向量回归机 垂向力 侧偏力 

分 类 号：U463[机械工程—车辆工程]