磁流变阻尼器多目标靶向抑制四跨转子轴系过临界转速振动实验研究

发布时间：2018-05-05 01:32

本文选题：磁流变阻尼器 + 临界转速　；参考：《北京化工大学学报(自然科学版)》2017年02期

【摘要】：针对四跨转子轴系过临界转速易发生振动过大且各跨转子之间耦合振动复杂的问题,研究了基于磁流变阻尼器的多目标靶向在线振动控制方法。搭建四跨转子轴系实验台,设计新型磁流变阻尼器并应用于自主开发的多目标靶向在线控制系统。模拟试车过程,研究了通入磁流变阻尼器内不同大小电流时,四跨转子轴系各跨转子振动的变化情况;由于四跨转子轴系过临界转速时耦合振动剧烈,因此提出基于转速的多目标靶向在线控制方法,采用在轴系中各跨转子临界转速附近开启、非临界转速关闭阻尼器的靶向分段控制策略,来实现在线抑制转子轴系过各阶临界转速时的振动。结果表明:磁流变阻尼器能抑制各跨转子过临界转速时的振动,且电流较大时抑振效果较好;应用带有多目标靶向在线控制系统的磁流变阻尼器能使四跨转子轴系在全转速范围振动较小,运行平稳。
[Abstract]:In order to solve the problem that the over-critical speed of four-span rotor system is prone to excessive vibration and the coupling vibration between the rotor is complex, a multi-target on-line vibration control method based on magneto-rheological damper is studied. A new magnetorheological damper was designed and applied to the self-developed multi-target online control system. In this paper, the variation of vibration of four span rotor shafts with different sizes of current in magnetorheological dampers is studied by simulating the test run, because the coupling vibration of four span rotor shafts is intense at the supercritical speed. Therefore, a multi-target on-line control method based on rotating speed is proposed, which is based on the target subsection control strategy of turning the damper around the critical speed of each rotor in the shafting and closing the damper at the non-critical speed. In order to suppress the vibration of rotor shafting at every critical speed on line. The results show that the magnetorheological damper can suppress the vibration of each rotor at the over-critical speed, and the vibration suppression effect is better when the current is larger. The magnetorheological damper with multi-target on-line control system can make the four-span rotor shaft system operate smoothly and less vibration in the whole speed range.
【作者单位】：华陆工程科技有限公司;北京化工大学化工安全教育部工程研究中心;
【基金】：国家“973计划”(2012CB026000) 国家自然科学基金(51135001)
【分类号】：TB535.1

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