Abstract：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 cable vibration control using axial force provided by giant magnetostrictive actuator（GMA）. However, time delays are frequently encountered in the actual control system, which can diminish the performance and stability of the stay cable vibration control system. In this paper, the dynamic model of GMA and motion equation of the stay cable coupling GMA control system are established. Focus to the cable coupling GMA control system with time delay and nonlinear, the time delay compensation theory is proposed based on the phase shift method, and the linearization method of is put forward. The delay compensation effect of the cable coupling GMA control system is obtained by simulation analysis. Results show that phase shift method can achieve good effect of time-delay compensation in above system, which is close to the vibration reduction rate without delay optimal control.
孙洪鑫，李建强，王修勇，方聪. 基于磁致伸缩作动器的拉索主动控制时滞补偿研究[J]. 振动与冲击, 2017, 36(14): 208-215.
SUN hongxin LI jianqiang WANG xiuyong FANG cong. Time delay compensation research of active cable vibration control with giant magnetostrictive actuator. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(14): 208-215.
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