时变结构变论域模糊控制试验研究  

Experimental study on variable universe fuzzy control of time-varying structure

作　　者：吕杨[1] 梅品彬 LYU Yang;MEI Pinbin(Tianjin Key Laboratory of Civil Structure Protection and Reinforcement,Tianjin Chengjian University,Tianjin 300384,China)

机构地区：[1]天津城建大学天津市土木建筑结构防护与加固重点实验室,天津300384

出　　处：《振动工程学报》2025年第4期785-793,共9页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(52178295);天津市自然科学基金资助项目(24JCZDJ00140);天津市青年科技人才(第一层次)项目。

摘　　要：传统模糊控制的模糊论域固定,当被控结构动力特性或外部激励发生变化时,模糊控制的控制效率会降低。在传统模糊控制算法的基础上增设伸缩因子模糊控制器,伸缩因子模糊控制以被控对象的误差及误差变化率作为输入,伸缩因子作为输出,实现主模糊控制器的模糊论域自适应调整。以一个安装磁流变阻尼器的两层钢框架结构为控制对象,将结构首层位移和速度作为输入,在dSPACE实时仿真系统中搭建了变论域模糊控制系统。开展了不同强度地震动和不同附加质量工况下结构振动控制的振动台试验,结果表明:变论域模糊控制能自适应调节模糊论域,有效减小结构位移、速度和加速度响应;当被控结构附加质量和地震动峰值加速度变化时,变论域模糊控制的控制效果均优于模糊控制和OFF被动控制。The fuzzy domain of traditional fuzzy control is fixed,and the control efficiency will decrease when the dynamic characteristics of the controlled structure or external excitation changes.On the basis of traditional fuzzy control algorithms,a variable universe fuzzy control is designed.The variable universe fuzzy control takes the error and error rate of the controlled structure as input,and the scaling factor as output,achieving adaptive adjustment of the fuzzy domain of the main fuzzy controller.A two-story steel frame structure with a magnetorheological damper as the control device was constructed,and the variable universe fuzzy control system with the displacement and velocity of the first floor as inputs was developed in the dSPACE real-time simulation system.Shaking table tests under different intensities of seismic motion and different additional mass conditions were conducted.The results show that variable universe fuzzy control can adaptively adjust the fuzzy domain,effectively reducing structural displacement,velocity,and acceleration response.When the added mass of the controlled structure and the peak ground acceleration change,the control effect of variable universe fuzzy control is better than that of fuzzy control and OFF passive control.

关 键 词：变论域模糊控制 时变结构 振动台试验 振动控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TU311.3[自动化与计算机技术—控制科学与工程]