磁流变阻尼器控制双跨转子轴系振动研究  

Two-span rotors system's vibration control by magneto-rheological dampers

作　　者：王锎 何立东[1] 邢健[1] 王晨阳[1] 黄秀金[1] 

机构地区：[1]北京化工大学化工安全教育部工程研究中心,北京100029

出　　处：《振动与冲击》2015年第2期150-153,共4页Journal of Vibration and Shock

基　　金：国家重点基础研究发展计划(973计划)资助项目(2012CB026000);教育部博士点基金资助项目(20110010110009)

摘　　要：针对大型旋转机械通过临界转速时振动过大问题,搭建双跨转子实验台,模拟试车过程。不改变转子轴系原有支撑形式,在两根轴上分别安装一台自主设计的磁流变阻尼器,实验研究阻尼器对轴系各跨转子振动影响规律。结果表明,阻尼器可有效抑制所在轴临界转速附近的振动,而对相邻轴无影响。据实验结果提出由开关控制双跨转子轴系通过两阶临界转速过程中的振动。结果表明,开关控制可在线抑制转子轴系通过临界转速时振动,避免轴系因振动过大被迫停机。In order to solve the problem that the vibration of rotating machinery is usually too large around the critical speed,a bench for two-span rotors system test was established to simulate the starting process.Without changing original supports of the rotors system,two self-designed magneto-rheological dampers were installed on each shaft. Different working conditions were set to study the influences of different mounting position and operating current of dampers.The results show that the damper can reduce the vibration of the shaft where the damper was installed near the critical speed.According to the test results,an on-off control method was proposed to control the two-span rotors＇vibration.The results show that the on-off control method can reduce the vibration when the rotors went through the critical speed of first and second orders without stopping the machine.

关 键 词：磁流变阻尼器 阻尼减振 双跨转子轴系 开关控制 

分 类 号：TH165.3[机械工程—机械制造及自动化] TB535.1[理学—物理]