Improving product quality of machining components has always met with problems due to the vibration of the milling machine’s spindle, which can be reduced by adding a vibration absorber. The tuned vibration absorber (TVA) has been studied extensively and found to have a narrow bandwidth, but the cutting force possesses wide bandwidth in the process of machining parts. Introducing nonlinearity into the dynamic vibration absorber can effectively increase the bandwidth of vibration suppression and can significantly improve the robustness of the vibration absorber. In addition, a semiactive TVA has proved to be more effective than a passive TVA for many applications, so the main purpose of this study is to find some appropriate semiactive control methods for a nonlinear energy sink (NES), a nonlinear vibration absorber, in structural vibration applications. Two semiactive control methods are considered in this study: continuous groundhook damping control based on velocity and on-off groundhook damping control based on velocity. To fairly compare these vibration absorbers, the optimal parameters of a passive TVA, a passive NES, and two semiactive NESs are designed using numerical optimization techniques to minimize the root-mean-square acceleration. Two cutting forces are introduced in this study, a periodic force and an aperiodic force, and the four vibration absorbers are compared. When the primary structure is excited with aperiodic cutting force, the amplitude of the primary structure decreased by 17.73% with the passive TVA, by 72.29% with the passive NES, by 73.54% with the on-off NES, and by 87.54% with the continuous NES. When the primary structure is excited with periodic cutting force, the amplitude of the primary structure decreased by 49.01% with a passive TVA, by 86.93% with a passive NES, by 96.38% with an on-off NES, and by 99.23% with a continuous NES. The results show that the passive NES is better than the passive TVA; the semiactive NES provides more effective vibration attenuation than the passive NES, and the continuous control is more effective than the on-off control.

中文翻译：

---

用于稳定铣削的非线性能量槽的最优半主动阻尼控制

由于铣床主轴的振动，提高加工零件的产品质量始终会遇到问题，可以通过添加减振器来降低振动。调谐减振器（TVA）已被广泛研究，发现其带宽较窄，但是切削力在加工零件的过程中具有较宽的带宽。将非线性引入动态吸振器可以有效地增加减振的带宽，并且可以显着提高吸振器的坚固性。此外，事实证明，半主动式TVA在许多应用中比被动式TVA更有效，因此，本研究的主要目的是为非线性能量吸收器（NES），非线性减振器，在结构振动应用中。本研究考虑了两种半主动控制方法：基于速度的连续地钩阻尼控制和基于速度的开关地钩阻尼控制。为了公平地比较这些减振器，使用数值优化技术设计了无源TVA，无源NES和两个半有源NES的最佳参数，以最小化均方根加速度。在这项研究中介绍了两个切削力，一个周期性力和一个非周期性力，并比较了四个减振器。当用非周期性切削力激发主结构时，无源TVA的主结构振幅下降了17.73％，无源NES的下降了72.29％，开/关NES的下降了73.54％，而无源NES的下降了87.54％。连续NES。当用周期性切削力激发初级结构时，采用被动TVA时，初级结构的振幅降低了49.01％，采用被动NES降低了86.93％，采用开/关NES降低了96.38％，采用无源NES降低了99.23％。连续NES。结果表明，被动式NES优于被动式TVA。半主动式NES比被动式NES提供更有效的振动衰减，连续控制比开-关控制更有效。