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Parameter Identification of magic formula Tire Model Based on Fibonacci Tree Optimization Algorithm

Journal of Shanghai Jiaotong university(Science) 2021年第5期26卷 647-657页

作者： FENG Shilin ZHAO Youqun DENG Huifan WANG Qiuwei CHEN Tingting College of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Department of IEOR University of CaliforniaBerkeleyBerkeleyCA 94720USA

The magic formula(MF)tire model is a semi-empirical tire model that can precisely simulate tire *** heuristic optimization algorithm is typically used for parameter identification of the MF tire *** avoid the defect of the traditional heuristic optimization algorithm that can easily fall into the local optimum,a parameter identification method based on the Fibonacci tree optimization(FTO)algorithm is proposed,which is used to identify the parameters of the MF tire *** proposed method establishes the basic structure of the Fibonacci tree alternately through global and local searches and completes optimization *** global search rule in the original FTO was modified to improve its *** results of independent repeated experiments on two typical multimodal function optimizations and the parameter identification results showed that FTO was not sensitive to the initial *** addition,it had a better global optimization performance than genetic algorithm(GA)and particle swarm optimization(PSO).The root mean square error values optimized with FTO were 5.09%,10.22%,and 3.98%less than the GA,and 6.04%,4.47%,and 16.42%less than the PSO in pure lateral and longitudinal forces,and pure aligning torque parameter *** parameter identification method based on FTO was found to be effective.

关键词： magic formula tire model parameter identification Fibonacci tree optimization(FTO)algorithm

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magic formula轮胎模型动力学性能研究

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汽车实用技术 2020年第16期45卷 116-119页

作者：梁长飞李玉光李子阳沈志顺奇瑞新能源汽车股份有限公司研究院安徽芜湖241002 大连大学机械工程学院辽宁大连116622

进一步研究magic formula轮胎模型的动力学性能。在Adams软件中建立magic formula轮胎模型,并进行纯制动、纯转向和制动转向联合三种工况下的仿真。仿真得到纵向力与纵向滑移率、侧向力与侧偏角、侧向力与纵向力和回正力矩与滑移率等关... 详细信息

进一步研究magic formula轮胎模型的动力学性能。在Adams软件中建立magic formula轮胎模型,并进行纯制动、纯转向和制动转向联合三种工况下的仿真。仿真得到纵向力与纵向滑移率、侧向力与侧偏角、侧向力与纵向力和回正力矩与滑移率等关系曲线,并进行分析。结果表明,Adams软件完成了magic formula轮胎模型多种工况下的仿真工作,magic formula轮胎模型可以较好地模拟轮胎动力学特性。

关键词： magic formula Adams 仿真分析

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magic formula轮胎模型参数的分阶段优化

Magic Formula轮胎模型参数的分阶段优化

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2007中国汽车工程学会年会

作者：丁能根王健冉晓凤北京航空航天大学

magic formula轮胎模型是现在比较流行的一个半经验模型,其表达公式简单,对轮胎特性的描述精确。但是在拟合和优化magic formula模型中的参数时,需要选取合适的参数初始值才能优化出满意的结果。本文提出了用分阶段优化方法拟合和优化Ma... 详细信息

magic formula轮胎模型是现在比较流行的一个半经验模型,其表达公式简单,对轮胎特性的描述精确。但是在拟合和优化magic formula模型中的参数时,需要选取合适的参数初始值才能优化出满意的结果。本文提出了用分阶段优化方法拟合和优化magic formula轮胎模型参数。该方法可以较快地确定合适的参数优化初始值,从而易于优化出最终的模型参数。文中用分阶段优化的方法对ATV 25×8,ATV 25×10轮胎数据进行拟合优化,得到了最终的magic formula轮胎模型参数值,验证了分阶段优化方法的可行性和有效性。

关键词： magic formula 分阶段优化拟合

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Modified Tire-Slip-Angle Model for Chaotic Vehicle Steering Motion

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Automotive Innovation 2018年第2期1卷 177-186页

作者： Yu Mu Ling Li Shuming Shi College of Transportation Jilin UniversityChangchun 130000China

The 5-DOF vehicle model employs the classical tire-slip-angle model to elicit the stability characteristics in vehicle handling during chaotic ***,the energy is not conserved,and the simulation results do not match actual behavior in that the vehicle should stop having lost *** have analyzed the limitations of the classical tire-slip-angle equation,and developed another model,which can be applied to all *** ensure the correct use of the Pacejka’s magic formula for vehicle dynamics,we discuss the differences in tire axis systems between the ISO and adapted SAE(Pacejka),and propose a transformation method relating the two different tire axis ***,simulations are described that are performed in accordance with the established 5-DOF vehicle system dynamics *** simulation results show that all states returned to the stable region after the vehicle had lost *** process involved energy dissipation,and approaches the response actually *** limitations of the classical tire-slip-angle model are fully displayed and the effectiveness of the proposed slip angle model is demonstrated in unsteady vehicle states.

关键词： Tire-slip-angle magic formula Vehicle dynamics Stability Phase trajectory

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Design and dynamic analysis of the micro-suspended monorail

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Journal of Southeast University(English Edition) 2020年第1期36卷 14-23页

作者： Jiang Yongzhi Wu Pingbo Zeng Jing Wei Lai Wang Xing He Qinglie Wang Shuai State Key Laboratory of Traction Power Southwest Jiaotong University Chengdu 610031China National Institute of Measurement and Testing Technology Chengdu 610021 China

A 20 degree of the freedom model of the micro-suspended monorail is established to analyze a new type of the vehicle system named micro-suspended *** formula of the tire is established by using the magic *** the modal analysis of the vehicle,the modes of the vehicle are obtained,and resonance has little effect on the *** the vehicle moves in a right turn curve,it yaws in the clockwise *** the action of the guidewheel(stable wheel)force,the front bogie yaws clockwise but the rear one yaws ***,the two bogies and the car body roll during the curve passing process of the *** the vehicle speed is high enough,the left drive wheel will derail and the anti-overturning moments are provided by the stable ***,the car body yaws in the counterclockwise direction when it moves out of the *** the simulation of the vehicle passing the curve,the clearance between the guide wheel and rail surface will lead to a fatal impact on the *** the same time,the dynamic response of the vehicle under the crosswind is *** vehicle will not overturn due to the ***,the collision of adjacent vehicles is *** results show that there is an intermittent collision force between two vehicles due to the vehicle's non synchronous pitch motion.

关键词： micro-suspended monorail dynamic model magic formula shock coupler force

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