视觉引导的磁流变振动控制方法  

Magnetorheological vibration control method with visual inspection

作　　者：丁欢 韩光辉 邓华夏[1] 马孟超[1] 钟翔 DING Huan;HAN Guanghui;DENG Huaxia;MA Mengchao;ZHONG Xiang(School of Instrument Science and Opto-electronics Engineering,Hefei University of Technology,Hefei 230009,Anhui,China)

机构地区：[1]合肥工业大学仪器科学与光电工程学院,安徽合肥230009

出　　处：《实验力学》2021年第4期491-498,共8页Journal of Experimental Mechanics

基　　金：国家自然科学基金(11872167,51775164,51705122);安徽省自然科学基金(1908085J15)。

摘　　要：现有的设备减振策略以被动控制为主,效果有限,难以适应变化的振动环境。磁流阻尼器是一种良好的半主动控制装置,能够随磁场强度的变化改变参数,但使用过程中多与传感器配合,系统复杂且控制效果受传感器性能约束。本文提出一种视觉引导的磁流变振动控制方法,将磁流变减振系统与视觉检测系统结合,利用随被控对象运动的高速相机在振动过程中检测静态标志点的相对运动轨迹获得振动信息,配合PID控制策略形成闭环控制系统。实验结果表明,在本文提出的视觉引导的磁流变半主动控制策略下,被控对象的振动加速度响应相比于被动减振降低了约40%。半主动控制策略能够有效提高减振效果,对设备减振而言是比被动控制更好的选择。Passive control is commonly used in the existing equipment vibration reduction strategy,which has limited effect and is difficult to adapt in the changeable vibration environment.Magnetorheological damper is a good semi-active control device,which can change the parameters with the change of magnetic field intensity.However,it is commonly used with sensors,resulting in a complex system,and the control effect is constrained by the performance of sensors.This paper presents a vision-guided magnetorheological vibration control method,which combines the magnetorheological vibration damping system and the visual inspection system.This method uses a high-speed camera moving with the controlled object to detect the relative motion track of the static mark points during the vibration process and get the vibration information,and uses the PID strategy for completing the control system.The test results show that under the vision-guided magnetorheological semi-active control strategy proposed in this paper,the vibration acceleration response of the controlled object is reduced by about 40%compared with the passive vibration reduction.The semi-active control strategy can effectively improve the damping effect and it is a better choice for equipment vibration reduction.

关 键 词：磁流变阻尼器 视觉测量 振动控制 

分 类 号：TH703[机械工程—仪器科学与技术]