拉索-磁致伸缩作动器系统PID控制仿真分析  

Simulation Analysis of PID Vibration Control of Cables Using Giant Magnetostrictive Actuators

作　　者：王修勇[1] 李建强[1] 孙洪鑫[1] 方聪[1] WANG Xiu-yong;LI Jian-qiang;SUN Hong-xin;FANG Cong(School of Civil Engineering, Hunan University of Science and Technology,Xiangtan 411201, Hunan China)

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《噪声与振动控制》2016年第6期116-120,共5页Noise and Vibration Control

基　　金：国家重点基础研究发展计划资助项目(973计划)(2015CB057702);国家自然科学基金资助项目(51378203)

摘　　要：拉索的大幅振动给斜拉桥安全运营带来威胁,利用磁致伸缩作动器施加轴向控制力抑制拉索横向振动是一种可行的方法。首先建立磁致伸缩作动器动力学模型,得到了该作动器力-位移传递函数,然后提出拉索-磁致伸缩作动器系统PID控制算法,根据拉索振动幅度大小通过调节PID控制参数,来施加轴向控制力,达到对拉索的控制效果。最后针对自由振动、简谐激励、随机激励三种情况用PID控制算法对拉索-磁致伸缩作动器系统进行了拉索控制效果仿真分析。研究表明,PID控制算法对拉索振动具有很好的控制效果。Large amplitude vibration of stay cables can bring a great threat to the operation of the cable-stayed bridge.Using axial force provided by a giant magnetostrictive actuator (GMA) is a feasible method for cable vibration suppression.In this paper, the dynamic model of the GMA is established. And the actuator’s force - displacement function is obtained.Then, the PID control algorithm of the stay cable and the GMA coupling is proposed. Finally, simulation analyses of the stay cable under free vibration, harmonic excitation and random excitation are carried out. The result proves that the vibration of the cable can be controlled effectively by PID control algorithm.

关 键 词：振动与波 拉索 磁致伸缩作动器 PID控制算法 仿真 

分 类 号：TU352[建筑科学—结构工程]