基于磁流变阻尼器的结构仿人智能控制方法研究  

Research on humanoid intelligent control of structure based on magnetorheological damper

作　　者：李振东 LI Zhendong(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《地震工程与工程振动》2022年第3期253-261,共9页Earthquake Engineering and Engineering Dynamics

基　　金：中铁第四勘察设计院集团有限公司科技研发项目(2020K002,2020C02)。

摘　　要：基于磁流变液在磁场下由流体变为粘塑性体的特性,磁流变(magnetorheological,MR)阻尼器可以通过很小的外部电流(20~50 W)提供可观的阻尼力,是一种重要的半主动控制装置。PID控制是振动控制领域应用最早的控制算法之一,为实现其在结构振动控制中的应用,文中在传统PID控制的基础上,提出了一种仿人智能PID控制算法,用于磁流变阻尼结构的振动控制。所提出的算法可以根据输入信息来识别被控系统所处的状态、动态特征及行为,并模仿人的智能控制决策行为来控制MR阻尼器的输入电压。为评估该方法的性能,以一个3层框架为例,分别对无控制、被动控制(Passive-off/Passive-on)、PID控制、仿人智能PID控制以及理想主动控制下的减震效果进行对比分析。结果表明:基于MR阻尼器的仿人智能PID控制对建筑结构的振动控制效果较好,超过了2种被动控制和传统PID控制,而且在某些方面可以达到甚至超过理想主动控制的性能。Based on the property of MR fluid in changing from fluid to viscoplastic body in magnetic field,MR damper can provide a considerable damping force by a very small external current(20~50 W),which is an important semi-active control device.PID control is one of the earliest control algorithms in the field of vibration control.To realize its application in vibration control of structures,a humanoid intelligent PID control algorithm based on traditional PID control is presented,which is applied to vibration control of MR damped structures in this paper.By identifying the state,dynamic characteristics and behavior of the controlled system according to the input information,the proposed algorithm can control the input voltage of MR damper by imitating human intelligent control decision-making behavior.To evaluate the performance of the method,a three-story frame is taken as an example to compare and analyze the damping effect under uncontrolled,passive control(Passive-off/Passive-on),PID control,humanoid intelligent PID control and ideal active control,respectively.The results show that the humanoid intelligent PID control based on MR damper has better vibration control performance on building structure,which not only surpasses two kinds of passive control and traditional PID control,but also achieves or even exceeds the performance of ideal active control in some aspects.

关 键 词：磁流变阻尼器 半主动控制 Spencer模型 仿人智能PID控制 

分 类 号：P315.9[天文地球—地震学] TU352[天文地球—固体地球物理学]