The aim of this study is to address the issues associated with traditional magnetorheological fluid(MRF)dampers,such as insufficient damping force after power failure and susceptibility to settlement.In order to achie...The aim of this study is to address the issues associated with traditional magnetorheological fluid(MRF)dampers,such as insufficient damping force after power failure and susceptibility to settlement.In order to achieve this,a bidirectional adjustable MRF damper was designed and developed.Magnetic field simulation analysis was conducted on the damper,along with simulation analysis on its dynamic characteristics.The dynamic characteristics were ultimately validated through experimental testing on the material testing machine,thereby corroborating the theoretical simulation results.Concurrently,this process generated valuable test data for subsequent implementation of the semi-active vibration control system.The simulation and test results demonstrate that the integrated permanent magnet effectively accomplishes bidirectional regulation.The magnetic induction intensity of the damping channel is 0.2 T in the absence of current,increases to 0.5 T when a maximum forward current of 4 A is applied,and becomes 0 T when a maximum reverse current of 3.8 A is applied.When the excitation amplitude is 8 mm and the frequency is 2 Hz,with the applied currents varying,the maximum damping force reaches 8 kN,while the minimum damping force measures at 511 N.Additionally,at zero current,the damping force stands at 2 kN,which aligns closely with simulation results.The present paper can serve as a valuable reference for the design and research of semi-active MRF dampers.展开更多
在建立整车磁流变减振器（MRD）半主动悬架模型基础上,利用八板块方法设计了整车的变论域控制策略。基于重构的标准B级和C级路面激励信号,分别在10、20和30 m/s 3个车速下进行了整车在直线和转向行驶工况下的仿真研究。在完成试验车辆...在建立整车磁流变减振器（MRD）半主动悬架模型基础上,利用八板块方法设计了整车的变论域控制策略。基于重构的标准B级和C级路面激励信号,分别在10、20和30 m/s 3个车速下进行了整车在直线和转向行驶工况下的仿真研究。在完成试验车辆改装基础上,进行了大量台架和道路工况下的试验。仿真和试验结果显示,所设计的半主动悬架和控制策略可以有效地提高车辆行驶的平顺性,磁流变半主动悬架与被动悬架相比振动强度可降低9%~22%,结果表明所建立的模型和控制策略是可行的。展开更多
文摘The aim of this study is to address the issues associated with traditional magnetorheological fluid(MRF)dampers,such as insufficient damping force after power failure and susceptibility to settlement.In order to achieve this,a bidirectional adjustable MRF damper was designed and developed.Magnetic field simulation analysis was conducted on the damper,along with simulation analysis on its dynamic characteristics.The dynamic characteristics were ultimately validated through experimental testing on the material testing machine,thereby corroborating the theoretical simulation results.Concurrently,this process generated valuable test data for subsequent implementation of the semi-active vibration control system.The simulation and test results demonstrate that the integrated permanent magnet effectively accomplishes bidirectional regulation.The magnetic induction intensity of the damping channel is 0.2 T in the absence of current,increases to 0.5 T when a maximum forward current of 4 A is applied,and becomes 0 T when a maximum reverse current of 3.8 A is applied.When the excitation amplitude is 8 mm and the frequency is 2 Hz,with the applied currents varying,the maximum damping force reaches 8 kN,while the minimum damping force measures at 511 N.Additionally,at zero current,the damping force stands at 2 kN,which aligns closely with simulation results.The present paper can serve as a valuable reference for the design and research of semi-active MRF dampers.
文摘在建立整车磁流变减振器（MRD）半主动悬架模型基础上,利用八板块方法设计了整车的变论域控制策略。基于重构的标准B级和C级路面激励信号,分别在10、20和30 m/s 3个车速下进行了整车在直线和转向行驶工况下的仿真研究。在完成试验车辆改装基础上,进行了大量台架和道路工况下的试验。仿真和试验结果显示,所设计的半主动悬架和控制策略可以有效地提高车辆行驶的平顺性,磁流变半主动悬架与被动悬架相比振动强度可降低9%~22%,结果表明所建立的模型和控制策略是可行的。
