含分数阶项的惯容式油气悬架动力学建模及特性分析  

Dynamic Modeling and Characteristic Analysis of Inertial Capacity Hydropneumatic Suspension with Fractional-order Terms

作　　者：薛春伟 王靖岳[1] 张硕 王宇龙 王军年[2] XUE Chunwei;WANG Jingyue;ZHANG Shuo;WANG Yuong;WANG Junnian(School of Automobile and Transportation,Shenyang Ligong University,Shenyang 110159,China;State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130025,China)

机构地区：[1]沈阳理工大学汽车与交通学院,沈阳110159 [2]吉林大学汽车仿真与控制国家重点实验室,长春130025

出　　处：《车辆与动力技术》2024年第3期1-6,共6页Vehicle & Power Technology

基　　金：汽车仿真与控制国家重点实验室开放基金资助(20191203);辽宁省自然科学基金项目资助(2020-MS-216)。

摘　　要：为了提高某轮式装甲车惯容式油气悬架模型的准确度,考虑了惯容式油气悬架中由运动件产生的阻尼力,对惯容式油气悬架进行动力学建模,验证了模型的正确性;并且引入分数阶算子,通过MATLAB/Simulink软件搭建含分数阶项的简化悬架模型进行仿真;为了找到最佳的仿真模型分数阶阶次,建立了综合性能评价指标函数,来确定最优阶次.通过对仿真结果的整理分析,得出分数阶模型相比传统整数阶模型拥有更高的仿真精度,为提高惯容式油气悬架的仿真研究的准确性提供参考.In order to improve the accuracy of the inertial hydraulic suspension model for a wheeled armored vehicle,the damping force generated by moving parts in the inertial hydraulic suspension was considered,and the dynamic modeling of the inertial hydraulic suspension was carried out to verify the correctness of the model.Additionally,fractional-order operators were introduced to build a simplified suspension model with fractional-order terms for simulation using MATLAB/Simulink software.To find the optimal fractional-order of the simulation model,a comprehensive performance evaluation index function was established to determine the optimal order.By organizing and analyzing the simulation results,it is concluded that the fractional-order model has higher simulation accuracy compared to traditional integer-order models,providing a reference for improving the accuracy of simulation research on inertial hydraulic suspension.

关 键 词：分数阶 惯容式油气悬架 动力学 非线性 

分 类 号：TH132.425[机械工程—机械制造及自动化]