CAJ | 학술논문

为了研究EMS型磁浮列车起浮后与轨道相互耦合发生的自激振动对车辆安全性、舒适性造成的影响，建立了单磁铁悬浮系统的车体-悬浮架-轨道的动力学模型。分析了车-轨系统的稳定性及悬浮控制器和系统各主要参数对振动的影响，提出了系统各参数和稳定性关系的表达式，讨论了运用瞬时最优控制算法抑制车-轨自激振动的具体方法。数值仿真了在3组不同系统参数条件下瞬时最优控制对于自激振动的抑制效果。研究结果表明：车辆结构、悬浮控制器、轨道各主要参数在车-轨自激振动中相互影响；当仿真系统起浮10 s时，悬浮气隙振幅分别减少了59％、62％、5％，轨道振幅分别减少48％、94％、73％，表明了控制方法的有效性。
위료연구EMS형자부열차기부후여궤도상호우합발생적자격진동대차량안전성、서괄성조성적영향，건립료단자철현부계통적차체-현부가-궤도적동역학모형。분석료차-궤계통적은정성급현부공제기화계통각주요삼수대진동적영향，제출료계통각삼수화은정성관계적표체식，토론료운용순시최우공제산법억제차-궤자격진동적구체방법。수치방진료재3조불동계통삼수조건하순시최우공제대우자격진동적억제효과。연구결과표명：차량결구、현부공제기、궤도각주요삼수재차-궤자격진동중상호영향；당방진계통기부10 s시，현부기극진폭분별감소료59％、62％、5％，궤도진폭분별감소48％、94％、73％，표명료공제방법적유효성。
The self-excited vibration occurs due to mutual coupling between EMS maglev vehicles and the track. In order to study its effect on the safety and comfort of vehicles,a vehicle body-suspension frame-track dynamic model for single-magnet suspension systems was established. Using this model, the stability of the vehicle-track system was analyzed together with the influence of the suspension controller and main system parameters on the vibration. Consequently,a relational expression between the system parameters and stability was proposed,and a specific method of using instantaneous optimal control algorithm to inhibit the self-excited vibration of the vehicle-track system was discussed. The inhibiting effect on self-excited vibration of the proposed algorithm was simulated under three groups of different system parameters. The results indicate that the vehicle structure,the suspension controller, and the main parameters of the track would influence each other in the vehicle-track self-excited vibration. At the time of 10 s after the simulation system started,the amplitude of the suspension air gap vibration in the three parameter configurations decreased by 59%,62%,and 5% respectively;and the amplitude of track vibration decreased by 48%,94%, and 73% respectively, which demonstrated the effectiveness of the proposed control method.