| 转子系统状态矩阵与稳定性分析 |
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| 引用本文： | 王正浩,袁惠群.转子系统状态矩阵与稳定性分析[J].东北大学学报(自然科学版),2009,30(7). |
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| 作者姓名： | 王正浩 袁惠群 |
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| 作者单位： | 东北大学,机械工程与自动化学院,辽宁,沈阳,110004 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 建立了考虑机匣弹性和陀螺力矩以及轴承回转动力激励时的悬臂双盘转子系统的动力学模型和运动微分方程.根据稳定性理论,由状态矩阵特征值的性质,分析了一些结构参数对转子系统稳定性的影响.结果表明:轴承回转动力激励、轴承刚度和转速对系统稳定性均有较大的影响;增大阻尼和机匣刚度对系统稳定运行有利;存在一个临界轴承刚度,当轴承刚度大于临界轴承刚度时,系统存在运动稳定区域,否则系统不存在运动稳定区域.
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| 关 键 词： | 转子系统 状态矩阵 稳定性 轴承 回转动力激励 临界轴承刚度 |
State Matrix of Rotor System and Stability Analysis |
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| WANG Zheng-hao,YUAN Hui-qun.State Matrix of Rotor System and Stability Analysis[J].Journal of Northeastern University(Natural Science),2009,30(7). |
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| Authors: | WANG Zheng-hao YUAN Hui-qun |
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| Institution: | WANG Zheng-hao,YUAN Hui-qun(School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110004,China.) |
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| Abstract: | A dynamic model and differential equation of motion are given for an asymmetrically cantilevered dual-disc rotor system,where the elasticity of rotor casing, gyro moment and the rotary dynamic excitation of bearing are taken into account,as well as the elastic connection between casing and stator.Based on the theory of stability,the effects of some structural parameters on the stability of the rotor system are analyzed by the eigenvalue of state matrix.The results show that the influence of the rotary dynam... |
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| Keywords: | rotor system state matrix stability bearing rotary dynamic excitation critical bearing stiffness |
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