基于分数阶天棚的车辆ISD悬架动态性能分析  

Dynamic Performance Analysis of ISD Suspension for Vehicles Based on Fractional-Order Skyhook Control

作　　者：沈钰杰[1] 季凯 黄荣楠 杨晓峰[2] 刘雁玲[2] Shen Yujie;Ji Kai;Huang Rongnan;Yang Xiaofeng;Liu Yanling(Automotive Engineering Research Institute,Jiangsu University,Zhenjiang 212013;School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013)

机构地区：[1]江苏大学汽车工程研究院,镇江212013 [2]江苏大学汽车与交通工程学院,镇江212013

出　　处：《汽车工程》2025年第2期332-341,共10页Automotive Engineering

基　　金：国家自然科学基金(52072157);中国科协青年人才托举工程项目(2022QNRC001);中国博士后科学基金资助项目(2024T171048,2024M753653);江苏高校青蓝工程项目和江苏省研究生科研与实践创新计划(SJCX23_2084)资助。

摘　　要：以提升车辆乘坐舒适性为目标,基于分数阶微积分理论提出分数阶天棚控制策略。首先,建立分数阶天棚车辆悬架动力学模型,推导得到分数阶天棚阻尼力和分数阶天棚惯性力的解析表达式,采用粒子群算法优化求解悬架的关键参数;针对分数阶力无法物理实现的问题,以应用机电惯容器的车辆ISD(inerter-spring-damper)悬架为被控模型,设计了基于分数阶天棚的模型参考自适应控制器跟踪分数阶悬架的力学性能输出。分别从频域与时域的角度对分数阶天棚惯容和分数阶天棚阻尼悬架进行了动态性能分析。仿真结果表明,分数阶天棚惯容悬架在降低乘坐舒适性方面相比于整数阶天棚惯容悬架具有更加显著的优势。在随机路面输入下,分数阶天棚阻尼悬架的车身加速度均方根值降低18.3%,而分数阶天棚惯容悬架降低20.6%,台架实验结果表明本文提出的基于分数阶天棚的车辆ISD悬架进一步提升了乘坐舒适性,为车辆ISD悬架的设计提供新思路。With the aim of improving vehicle ride comfort,in this paper a fractional-order skyhook control strategy based on the fractional order calculus theory is proposed.Firstly,a fractional-order skyhook vehicle suspen⁃sion dynamic model is established to derive analytical expressions for the fractional-order skyhook damping force and fractional-order skyhook inertial force.Subsequently,particle swarm optimization algorithm is used to optimize the key parameters of the suspension.In order to solve the problem that fractional-order force cannot be realized physically,a vehicle ISD(inerter-spring-damper)suspension with mechatronic inerter is chosen as the controlled model.A model reference adaptive controller based on fractional-order skyhook is designed to track the mechanical performance output of the fractional-order suspension.Dynamic performance analyses of fractional-order skyhook in⁃erter suspension and fractional-order skyhook damper suspension is conducted from both frequency-domain and time-domain perspectives.Simulation results show that fractional-order skyhook ISD suspension has more significant advantages in reinforcing ride comfort than integer-order skyhook ISD suspension.Under random road input,the root-mean-square value of vehicle body acceleration of fractional-order skyhook damper suspension decreases by 18.3%,while the fractional-order skyhook ISD suspension decreases by 20.6%.The bench test results demonstrate that the vehicle ISD suspension based on fractional-order skyhook further enhances ride comfort,offering new in⁃sights for the design of vehicle ISD suspension.

关 键 词：车辆ISD悬架 分数阶微积分 天棚控制 机电惯容器 

分 类 号：U463.33[机械工程—车辆工程]