In the present paper, the vertical vibration of semi-active suspension system of two-degree of freedom railway high-speed train is studied. The cubic nonlinear stiffness of secondary suspension is considered in the governing equations. The quadratic approximate solution and average equation are obtained by the method of modal solution and multiple scales. The second order modal amplitude is much larger than its first order modal amplitude of the vibrating system. The vibration control is mainly discussed when the frequency of external excitation is close to the second order modal frequency. For the linear delayed feedback control system, the amplitude of the vehicle body is suppressed to a minimum value for all time delay values when the gain is located to this optimal value. For nonlinear delayed feedback control system, the amplitude of the vehicle body can be suppressed for a fixed value of delayed feedback gain when the time delay is chosen in the time delay vibration suppression range. There are some values of time delay, the amplitude of vehicle body can be suppressed to a minimum value when time delay is chosen as these values. The results show that, the delayed feedback control can be used to improve the characteristics of semi-active suspension system and suppress the vibration of vehicle body.
参考文献
相似文献
引证文献
引用本文
赵艳影,黄小卫. 高速列车半主动悬挂系统的振动及主动控制[J]. 科学技术与工程, 2020, 20(28): 11794-11802. zhaoyanying, 黄小卫. Vibration and Active Control of Semi-active Suspension System Of Railway High-speed Train[J]. Science Technology and Engineering,2020,20(28):11794-11802.