A time-delayed absorber is utilized to suppress the vibration of a primary system excited by a simple harmonic force. The inherent and intentional time delays in the feedback control loop are taken into consideration. The value of the former is fixed, while the value of the latter is tunable in the controller. To begin with, the mechanical model of the system is established and the acceleration transfer functions of the system are derived. Consequently, the stability analysis of the coupled system is carried out. Finally, the experimental studies on the performance of the time-delayed absorber are conducted. Both experimental and theoretical results show that the time-delayed absorber with proper values of feedback gain coefficient and intentional time delay greatly suppresses the vibration of the primary system. The numerical results validate the correctness of the experimental and theoretical ones.

中文翻译：

---

通过可调延迟的吸收器抑制主动振动的实验和分析

延时吸收器用于抑制由简单谐波力激发的一次系统的振动。考虑到反馈控制回路中的固有和故意的时间延迟。前者的值是固定的，而后者的值在控制器中是可调的。首先，建立系统的机械模型并导出系统的加速度传递函数。因此，进行了耦合系统的稳定性分析。最后，对延时吸收器的性能进行了实验研究。实验和理论结果均表明，具有适当的反馈增益系数值和有意的时延的时滞吸收器极大地抑制了主系统的振动。