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脉冲路面下电动汽车主动悬架状态反馈H∞控制
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State Feedback H∞ Control for Active Suspension of Electric Vehicles on Pulse Road
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    摘要:

    针对轮毂电机对电动汽车平顺性的负效应,建立轮毂电机电动汽车四自由度振动 平面模型,研究被动悬架和主动悬架对电动汽车脉冲平顺性的影响. 应用约束状态H∞控制方 法,设计轮毂电机电动汽车主动悬架控制策略,开发了MATLAB/Simulink控制仿真模型. 分析 无偏心、10% 偏心率和 20% 偏心率对轮毂电机激励的影响,比较轮毂电机电动汽车被动悬架 和主动悬架的脉冲路面振动响应的时间历程和4种情况的平顺性评价指标. 研究结果表明,轮 毂电机偏心对电动汽车产生振动激励,既影响脉冲路面平顺性,也影响状态反馈H∞控制效果.

    Abstract:

    Aiming at the negative effect of a hub motor on the ride comfort of an electric vehicle, a four-degree of freedom vibration plane model of hub motor electric vehicle is established, in order to study the influence of pas? sive suspension and active suspension on the pulse road ride comfort of the electric vehicle. An active suspension control strategy for hub motor electric vehicles is designed, and MATLAB/Simulink control simulation model is developed with the constrained state H∞ control method. The effects of no eccentricity, 10% eccentricity, and 20% eccentricity on the excitation of the hub motor are analyzed. The time history of pulse road vibration response of pas? sive suspension and active suspension of hub motor electric vehicle, as well as the ride comfort evaluation indexes of four cases, are compared. The results show that the eccentricity of the hub motor can produce vibration excitation on the electric vehicle, which not only affects the pulse road ride comfort but also affects the state feedback H∞ control.

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李杰 ,贾长旺 ,成林海 ,赵旗.脉冲路面下电动汽车主动悬架状态反馈H∞控制[J].湖南大学学报:自然科学版,2022,49(8):12~20

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  • 在线发布日期: 2022-09-07
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