An experimental study was undertaken to evaluate the mathematical modelling of the magnetorheological (MR) damper featuring annular radial gap on its valve. The experiment was conducted using a fatigue dynamic test machine under particular excitation frequency and amplitude to get force-velocity and force-displament characteristics. Meanwhile, the mathematical modelling was done using quasi-steady modelling approach. Simulation using adaptive neuro fuzzy inference (ANFIS) Algorithm (Gaussian and Generalized Bell) were also carried out to portray the damping force-displacement modelling that is used to compare with the experimental results. The experimental characteristics show that amplitudes excitation and current input affect the result damping force value. The comparison of the experimental and mathematical results presented in this paper shows a significant difference in damping force value and that the quasi-steady modelling could not significantly approach the damping force-velocity results. Moreover, the semi-active damper is compared to the passive damper. The results show that a semi-active damper performs better than a passive damper because it only requires a little power. Based on the damping force-displacement modelling, it can be seen that Gaussian has a higher accuracy rather than Generalized Bell. Discussion on the energy dissipation and equivalent damping coefficient were also accomodated in this paper. Having completed in mathematical modelling and simulation, the damper would be ready for further work in-vehicle application that is development of control system.

中文翻译：

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环形径向型磁流变阻尼器的数学建模与实验研究

进行了一项实验研究，以评估其阀上具有环形径向间隙的磁流变（MR）阻尼器的数学模型。实验是使用疲劳动态试验机在特定的激励频率和振幅下进行的，以得到力-速度和力-位移特性。同时，使用准稳态建模方法进行数学建模。还使用自适应神经模糊推理（ANFIS）算法（高斯和广义贝尔）进行了仿真，以描绘阻尼力-位移模型，该模型用于与实验结果进行比较。实验特性表明，振幅激励和电流输入会影响结果阻尼力值。本文给出的实验结果和数学结果的比较表明，阻尼力值存在显着差异，并且拟稳态模型无法显着逼近阻尼力-速度结果。此外，将半主动阻尼器与被动阻尼器进行了比较。结果表明，半主动阻尼器的性能优于被动阻尼器，因为它只需要很少的功率。基于阻尼力-位移模型，可以看出高斯比通用贝尔具有更高的精度。本文还讨论了能量耗散和等效阻尼系数。在完成数学建模和仿真后，该减振器将为控制系统的开发在车载应用中的进一步工作做好准备。