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FxLMS Control of an Off-Road Vehicle Model with Magnetorheological Dampers

机译：磁流变阻尼器越野车型的FXLMS控制

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The paper presents a study on adaptive vibration control applied in a semi-active vehicle suspension. The simulation-based analysis is dedicated to laboratory tests conducted for an experimental allterrain vehicle subjected to mechanical exciters emulating road-induced vibration. The implemented simulation environment consists of a full-car model which exhibits seven degrees of freedom (7 DoFs), equipped with magnetorheological dampers. The MR damper model based on hyperbolic tangent function was included in the vehicle model. The front wheels of the model were subjected to sinusoidal excitation with constant frequency within the range 0.5-25 Hz. The FxLMS (Filtered-x Least Mean Squares) algorithm is adopted and used for controlling the MR dampers where the vertical velocity of excitation is assumed as a reference signal of the control algorithm. The goal of the algorithm is to attenuate vertical velocity of the front middle vehicle body part. The proposed FxLMS was compared to passive suspension controlled with constant control current and Skyhook algorithm. Comparison of different suspension configurations based on transmissibility characteristics and quality indices confirm usefulness of FxLMS with respect to vibration control, suspension deflection and adaptability features.
机译：本文介绍了在半主动载体悬架中施加的自适应振动控制的研究。基于仿真的分析专用于对模拟道路诱导的振动进行机械激发器的实验换辆车进行的实验室测试。实施的仿真环境包括一个全车型，它呈现出七个自由度（7个DOF），配备磁流变阻尼器。基于双曲线切线功能的MR DAMPER模型包括在车型中。模型的前轮在0.5-25Hz范围内以恒定频率进行正弦激发。采用FXLMS（过滤-X最小均方方面）算法，用于控制激励的垂直速度的MR阻尼器作为控制算法的参考信号。该算法的目标是衰减前中间车身部件的垂直速度。将所提出的FXLMS与恒定控制电流和Skyhook算法控制的被动悬架进行比较。基于传递特性和质量指标的不同悬架配置的比较确认了FXLMS关于振动控制，悬架偏转和适应性特征的用性。

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