Vehicle vibration control plays a vital role in achieving sustainable environmental development goals and reducing risks to human health. This study focuses on enhancing ride comfort and vehicle stability by minimizing vibrations transmitted to the driver’s body. A hybrid semi-active system is proposed, combining a hyperbolic tangent damping model with a four-parameter viscoelastic stiffness model to effectively reduce the biodynamic reaction to vibrations. The key features of the novel model is the independent tuning of damping-stiffness through hyperbolic tangent and four-parameter models. Additionally, a hybrid control approach that combines a PID controller and an ANFIS is used to govern the damper current. The proposed system is analyzed in both the time and frequency domains to evaluate vehicle ride quality and stability. In the time-domain analysis under sinusoidal bump excitation, peak displacement reductions ranging from 82.11% to 88.61% are achieved compared with the passive system (PS), while reductions of 40.65%–66.44% are obtained compared with the semi-active damping variability (SDV) system. RMS acceleration is reduced by approximately 81.5% for body elements and the seat, and by over 86% for the vehicle body compared with the passive system. For random road excitation, peak displacement reductions range from 87.02% to 92.70% compared with the PS and 52.19%–73.13% compared with the SDV system, while RMS acceleration is reduced by approximately 89% and 31.5%, respectively. In frequency domain analysis, the proposed system shows reduced spectral magnitude and transmissibility, demonstrating effective vibration isolation, resonance suppression and improved dynamic stability. The results demonstrate the efficacy of the proposed system compared to passive system and semi-active system with only damping adjustment by decreasing the acceleration (RMS values) lower than the ISO-recommended thresholds for a comfortable ride.
Vivek et al. (Thu,) studied this question.