磁流变半主动悬架史密斯-区间二型模糊时滞补偿控制  

Interval Type2-Smith Fuzzy Based Time Delay Compensation Control for Magnetorheological Semi-active Suspension

作　　者：王骏骋 周明垚 章世伟 Wang Juncheng;Zhou Mingyao;Zhang Shiwei(School of Mechanical Engineering,Zhejiang Sci-Tech University,Hangzhou 310018)

机构地区：[1]浙江理工大学机械工程学院,杭州310018

出　　处：《汽车工程》2025年第4期755-763,723,共10页Automotive Engineering

基　　金：国家自然科学基金(52205135)资助。

摘　　要：针对传统史密斯-一型模糊控制在变参数工况下的时滞补偿不足与鲁棒性欠佳等问题,提出一种磁流变半主动悬架史密斯-区间二型模糊时滞补偿控制方法。该方法将车身垂直加速度、悬架动挠度和轮胎动位移作为控制系统的状态输入,全面捕捉并响应车辆动态变化;通过引入上下隶属度函数,明确了模糊变量隶属度区间,进而计算出不同模糊规则下的激活度区间,显著提升了系统抗干扰能力;创新性地引入Center-of-sets算法优化模糊降阶过程,避免归一化重复计算,提升系统执行速度与实时性。仿真结果显示,该控制策略在提升磁流变半主动悬架控制效果与鲁棒性方面表现优异,有效应对复杂多变行驶环境。For the limitation of traditional type-1 Smith fuzzy control in terms of inadequate time delay compensation and insufficient robustness under varying parameter driving conditions,an interval type-2 Smith fuzzy time delay compensation control method is introduced for magnetorheological(MR) semi-active suspension systems.This approach incorporates the vehicle′s vertical acceleration,suspension deflection,and tire dynamic displacement as the state input of the control system,enabling a comprehensive capture and response to dynamic vehicle changes.By introducing in upper and lower membership functions,the method defines clear membership intervals for fuzzy variables,which are then leveraged to calculate activation intervals under various fuzzy rules,significantly enhancing the system′s anti-interference capability.Additionally,the Center-of-sets algorithm is innovatively introduced into the fuzzy reduction process,avoiding redundant normalization calculation during the type reduction of type-2 fuzzy sets,thereby improving the system′s execution speed and real-time performance.Simulation results demonstrate that the proposed interval type-2 Smith fuzzy delay compensation control strategy achieves improvement in both control effectiveness and robustness for MR semi-active suspension systems,effectively tackling complex and varied driving environment.

关 键 词：半主动悬架 磁流变减振器 时滞补偿 史密斯 区间二型模糊控制 

分 类 号：U463.33[机械工程—车辆工程]