基于改进双Sigmoid模型的磁流变减振器力学建模研究

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (15) : 216-222.

论文

彭虎1，张进秋2，刘义乐2，张建2，彭志召2，孙宜权2

作者信息 +

MR damper’s modeling based on improved dual-sigmoid model

PENG Hu1, ZHANG Jinqiu2, LIU Yile2, ZHANG Jian2, PENG Zhizhao2, SUN Yiquan2

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文章历史 +

摘要

设计了一款磁流变减振器(Magneto-rheological Damper, MRD)，并对其进行了性能试验。针对双sigmoid模型(Double Sigmoid Model, DSM)无法反映阻尼力与位移的关系、未考虑蓄能器刚度及偏置力影响等缺陷，提出一种改进型双sigmoid模型(Improved Double Sigmoid Model, IDSM)。对模型参数的含义、参数与电流及速度的关系以及参数的辨识等问题进行分析，并利用标准差对模型准确性进行验证。结果表明：IDSM在低速及高速、小电流及大电流条件下均与试验值具有较高的拟合度；最大速度0.52m/s时，误差相对值仅为1.71%。IDSM具有参数少、模型精确且易于编程实现等优点，适用于工程领域。

Abstract

A magneto-rheological (MR) damper was designed and its performance tests were conducted.Aiming at problems of the dual-sigmoid model (DSM) to describe MR damper’s dynamic performance being not able to reflect the relation between damping force and displacement and consider the stiffness of energy accumulator and the influence of bias force, an improved dual-sigmoid model (IDSM) for MR damper’s dynamic performance was proposed.Several key points of IDSM including definitions of model parameters, relations among parameters, current and velocity, and identification of parameters, etc.were analyzed, and the correctness of the model was verified with the standard deviation.The results indicated that the IDSM has a higher degree of fit with test values regardless of low velocity or high one and small current or large one; when the maximum velocity is 0.52 m/s, the relative error is only 1.71%; IDSM has advantages of few parameters, good accuracy and easy to realize, it is suitable for engineering fields.

导出引用

彭虎1，张进秋2，刘义乐2，张建2，彭志召2，孙宜权2. 基于改进双Sigmoid模型的磁流变减振器力学建模研究[J]. 振动与冲击, 2019, 38(15): 216-222

PENG Hu1, ZHANG Jinqiu2, LIU Yile2, ZHANG Jian2, PENG Zhizhao2, SUN Yiquan2. MR damper’s modeling based on improved dual-sigmoid model[J]. Journal of Vibration and Shock, 2019, 38(15): 216-222

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