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<p>The current work seeks to demonstrate enhanced ride comfortability and vehicle stability for better performance by a hybrid vibration isolator that exhibits adjustable stiffness and damping characteristics integrating the Bouc–Wen and viscoelastic models. The hybrid control approach with the Gaussian membership functions of twenty-five rules controls the voltage supplied to the system. The mathematical modeling and simulation of the half-car model, which includes the suspension system under random road profile, are developed using MATLAB environment.\ The peak displacement of vehicle is reduced by approximately 66% compared to the system with variable damping only (SVD) approximately by 92% as compared to the passive system (PS). The RMS acceleration of the vehicle body is decreased by approximately 46.3% and 89.3% as compared to the SVD and PS. The maximum displacement and RMS acceleration of the seat are decreased by 20% and 72.31%, respectively, as compared to the SVD, whereas approximately 89% as compared to the PS. With the significant decrease in RMS acceleration, peak displacement leads to comfortable ride and vehicle stability in comparison with the PS and SVD.</p>

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Hybrid semi-active vibration isolator with Gaussian membership functions of twenty-five rules for vibration control under random road profile

  • 期刊论文

  • 发表日期：

    2026年6月22日

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  • Jitender Kumar,
  • Gian Bhushan,
  • Nitin Kumar,
  • Aman Aggarwal

摘要

The current work seeks to demonstrate enhanced ride comfortability and vehicle stability for better performance by a hybrid vibration isolator that exhibits adjustable stiffness and damping characteristics integrating the Bouc–Wen and viscoelastic models. The hybrid control approach with the Gaussian membership functions of twenty-five rules controls the voltage supplied to the system. The mathematical modeling and simulation of the half-car model, which includes the suspension system under random road profile, are developed using MATLAB environment.\ The peak displacement of vehicle is reduced by approximately 66% compared to the system with variable damping only (SVD) approximately by 92% as compared to the passive system (PS). The RMS acceleration of the vehicle body is decreased by approximately 46.3% and 89.3% as compared to the SVD and PS. The maximum displacement and RMS acceleration of the seat are decreased by 20% and 72.31%, respectively, as compared to the SVD, whereas approximately 89% as compared to the PS. With the significant decrease in RMS acceleration, peak displacement leads to comfortable ride and vehicle stability in comparison with the PS and SVD.