Time delay compensation for the active cable vibration control using giant magnetostrictive actuators

被引：0
|
作者：
Sun H. [1 ]
Li J. [1 ]
Wang X. [1 ]
Fang C. [1 ]
机构：
[1] School of Civil Engineering, Hunan University of Science and Technology, Xiangtan
来源：
Wang, Xiuyong | 1600年 / Chinese Vibration Engineering Society卷 / 36期
关键词：
Giant magnetostrictive actuator; Phase shift method; Simulation analysis; Stay cable; Time delay compensation;
D O I：
10.13465/j.cnki.jvs.2017.14.033
中图分类号：
学科分类号：
摘要：
The large amplitude vibration of stay cables will give rise to the safe operation risk on the cable-stayed bridges. It is a kind of feasible method for the cable vibration control using the axial force provided by a giant magnetostrictive actuator (GMA). However, time delays, frequently encountered in the actual control system, can diminish the performance and stability of the stay cable vibration control system. The dynamic model of the GMA and motion equation of the stay cable coupling GMA control system were established. Focusing on the cable coupling GMA control system with time delay and nonlinearity, the time delay compensation theory was presented based on the phase shift method, and the linearization method for the control system was put forward. The delay compensation effect on the cable coupling GMA control system was revealed by simulation analysis. The results show that the phase shift method can achieve good effect of time-delay compensation in the above system, which is close to the vibration reduction rate of an optimal control without delay. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：208 / 215
页数：7
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