转子系统变刚度动力吸振器试验研究  

Tests for a dynamic absorber with tunable stiffness of rotor systems

作　　者：姚红良[1] 王童照 曹焱博 闻邦椿[1] YAO Hongliang;WANG Tongzhao;CAO Yanbo;WEN Bangchun(School of Mechanical Engineering ＆ Automation,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学机械工程与自动化学院,沈阳110819

出　　处：《振动与冲击》2018年第9期80-85,共6页Journal of Vibration and Shock

基　　金：国家重点基础研究发展计划(973计划)(2012CB026006);国家自然科学基金(51475085)

摘　　要：为实现转速变化转子系统的振动抑制,提出了一种新型的变刚度动力吸振器,采用永久磁铁组成的变刚度机构实现吸振器的刚度和固有频率可调。设计了吸振器结构,建立了转子-永磁变刚度吸振器的动力学方程并分析了吸振器的工作原理。搭建了转子-永磁变刚度吸振器试验台和控制系统,编制了PID控制程序。在试验台上进行了永磁变刚度机构有效性试验、扫频吸振效果验证试验、转子定转速控制试验等试验。研究结果表明,所设计的变刚度动力吸振器能够达到振动抑制效果。To realize vibration suppression of a rotor system with variable rotating speed,a new type of dynamic absorber with tunable stiffness was proposed. The stiffness and natural frequency of the absorber could be adjusted with a variable stiffness mechanism composed of permanent magnets. Firstly,the structure of the absorber was designed,the dynamic equation of the rotor-absorber with a permanent magnet variable stiffness was established,and the working principle of the absorber was analyzed. Secondly,the rotor-permanent magnet tunable stiffness absorber test platform and its control system were built,a PID control program was compiled. Finally,the effectiveness test of the permanent magnet tunable stiffness mechanism,the validity test for frequency-sweeping and vibration reduction effect and the rotor constant speed control test were conducted on the test platform. The results showed that the tunable stiffness dynamic absorber designed can acquire vibration suppression effect.

关 键 词：变刚度 动力吸振 永久磁铁 PID控制 

分 类 号：TB123[理学—工程力学]