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Modeling and characterization of novel magnetorheological (MR) cell with individual currentsZHENG Jia-jia(郑佳佳)1, WANG Xin-jie(王新杰)1, OUYANG Qing(欧阳青)1, LI Yan-cheng(李延成)2, WANG Jiong(王炅)1(1. School... of Engineering and Information Technology, University of Technology Sydney, NSW 2007, Australia)Abstract:Magnetorheological (MR) cell with multi-coil was designed to enlarge the range of controllable......
改进的基于MR阻尼器的斜拉索模糊半主动控制有限元模拟刘黔会,张挣鑫贵州理工学院土木工程学院摘 要:模糊控制应用在斜拉索-MR阻尼器振动控制时,可直接通过系统的响应得到MR阻尼器的输入电压,简单实用,不过需要大量调试才能得到系统响应的量化因子,工作量较大.在基于MR阻尼器斜拉索参数共振模糊半主动控制的基础上,提出一种改进的方法,使得模糊控制计算更加智能.以红水河特大桥的M22和M13拉索为研究对象,对其参数共振进行振动控制研究.结果表明:改进的基于MR阻尼器斜拉索参数共振模糊控制方法相比一般模糊控制方法更加智能,不需要斜拉索无控制时的响应可确定输入变量或输出变量的基本论域和量化因子且采用改进的模糊半主动控制方法进行振动控制时,阻尼器所需电压均小于一般模糊控制时所需电压.关键词:MR阻尼器......
MR阻尼器的性能测试与逆模式神经网络智能控制方法的研究 瞿伟廉1,刘嘉1,涂建维1 (1.武汉理工大学,道路桥梁与结构工程湖北省重点实验室,湖北,武汉,430070) 摘要:自制了内置弹簧蓄能器的新型MR阻尼器,将自制的MR阻尼器在武汉理工大学测试中心完成了性能测试.研究了在不同电流输入下阻尼力-位移,阻尼力-速度之间的关系,提出了MR阻尼器的修正的Bingham力学模型.在此基础上,采用逆模式神经网络来模拟阻尼器的逆向模型,与其它主动控制算法形成了MR阻尼器的智能控制方法.通过对一栋三层剪切型结构进行仿真计算,我们知道通过逆模式神经网络可以得到连续的控制电流,实现阻尼力的连续可调,控制效果将优于半主动控制效果. 关键词:逆模式; 神经网络; MR阻尼器; 结构控制; [全文内容正在添加中] ......
: A sandwich beam specimen was fabricated by treating with MR elastomers between two thin aluminum face-plates. Experiment was carried out to investigate the vibration responses of the sandwich beam with respect to the intensity of the magnetic field and excitation frequencies. The results show that the sandwich beams with MR elastomers cores have the capabilities of shifting natural frequencies......
热轧软质镀锡原板的开发及质量改进孙明军1,夏小明2,穆海玲11. 上海梅山钢铁股份有限公司技术中心2. 上海梅山钢铁股份有限公司热轧板厂摘 要:牌号MR T-1.5CA IF是镀锡板中最软的产品之一,对前工序热轧原板的各项质量要求均高于普通冷轧成型用钢.对热轧镀锡原板MR T-1.5CA IF开发过程中存在的温度,表面,孔洞,宽度,凸度等质量问题进行了分析,并结合产线特点和生产实际,从优化终轧温度,控制氧化铁皮,消除孔洞缺陷,控制宽度拉窄,提高凸度精度等方面采取了有效措施,保证了软质镀锡原板MR T-1.5CA IF的产品质量,实现了稳定生产.关键词:MR T-1.5CA IF;镀锡原板;热轧;质量改进;......
Press and Springer-Verlag Berlin Heidelberg 2012 Abstract: The theoretical study of a semi-active predictive control (SAPC) system with magnetorheological (MR) dampers to reduce the responses... of self-compensation for time delay occurring in real application. A double-ended shear mode combined with a valve mode MR damper, named MRF-04K damper, with the maximum force of 20 kN was designed......
电流变流体和磁流变流体在工程上的应用 祝世兴1,梁钟2,李乔治2 (1.中国民用航空学院机电学院,天津,300300;2.纽约州立大学布法罗分校,布法罗,14260,美国) 摘要:阐述了ER和MR流体的组成及发展过程, 并对它们的物理和化学性能进行了对比分析, 总结了现有ER和MR流体的理论计算模型,应用领域和应用状况, 提出了ER和MR流体阻尼装置的分类方法及使用时应注意的几个问题, 最后对ER和MR流体现存的问题和发展方向作了分析和展望. 关键词:ER流体; MR流体; 智能材料; 阻尼装置; 工程应用; [全文内容正在添加中] ......
Abstract: In order to improve the screening efficiency of vibrating screen and make vibration process smooth, a new type of magnetorheological (MR) damper was proposed. The signals of displacement... of the MR damper and vibrating screen. And in the experimental conditions, it is found that when the working current of MR damper is 2 A and the rotation speed of vibration motor is 800 r/min......
and robustness to model uncertainties. A full car model with seven degrees of freedom was established to demonstrate the effectiveness of the new control approach. Magneto-rheological (MR) dampers were designed... approach exhibits some advantages in implementation, performance flexibility and robustness compared to existing methods. Key words: mixed H2/H∞ control; semi-active suspension; magneto-rheological (MR......
一种新型结构智能振动控制装置--磁流变液体阻尼器 田佳宁1,郑连芳2 (1.沈阳嘉泰房地产评估事务所,沈阳110014;2.沈阳热力工业安装工程公司,沈阳110024) 摘要:本文介绍了一种新型结构智能振动控制装置--磁流变液体阻尼器.重点介绍了磁流变阻尼液的本构关系,磁流变阻尼器的典型模型和其优点,及其在结构振动控制中的应用现状. 关键词:结构; 振动控制; MR阻尼器; [全文内容正在添加中] ......