拉索-磁致伸缩作动器系统PID控制仿真分析.PDFVIP

第36 卷 第6 期 噪 声 与 振 动 控 制 Vol 36 No.6 2016 年12月 NOISE AND VIBRATION CONTROL Dec. 2016 文章编号：1006-1355(2016)06-0116-05 拉索-磁致伸缩作动器系统PID 控制仿真分析 王修勇，李建强，孙洪鑫，方 聪 （湖南科技大学 土木工程学院，湖南 湘潭 411201 ） 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。 关键词：振动与波；拉索；磁致伸缩作动器；PID 控制算法；仿真 中图分类号：TU352 文献标识码： DOI 编码：10.3969/j.issn. 1006-1335.2016.06.023 Simulation Analysis of PID Vibration Control of Cables Using Giant Magnetostrictive Actuators 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) Abstract : 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. Key words : vibration and wave; stay cable; giant magnetostrictive actuator; PID control algorith