periodic vibration

Secondly, aiming at the physical phenomenon that vibration of particles in fluctuating wind field, after setting the Nonlinear non-autonomous system model, we studied the dynamic characteristics of periodic vibration, period-doubling bifurcation, QPO, chaos and so on.

其次，针对颗粒在风场作用下来回振动这一物理现象，本文通过建立非线性非自治系统模型并求解，对颗粒的周期运动，倍周期分岔，准周期运动，混沌等动力学特性进行了研究。

Active Control of Forced Periodic Vibration Based on Feedforward Fuzzy Self-learning Control

基于前馈模糊自学习控制的强迫周期振动主动控制

A primary seismic wave from an explosive source is a pulse response, and its periodic vibration originates from seismic pulses.

爆炸震源的地震纵波是脉冲性质的。周期振动是地震脉冲引起的次生振动。

The results show that the chaos can be restrained by superposing a periodic vibration.

结果表明，叠加周期振动可以抑制系统的混沌。