| 双支旋转系统扭转振动的理论分析 |
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| 引用本文： | 马超,徐小力,吴国新. 双支旋转系统扭转振动的理论分析[J]. 北京机械工业学院学报, 2011, 0(3): 87-90,95 |
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| 作者姓名： | 马超 徐小力 吴国新 |
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| 作者单位： | 北京信息科技大学现代测控技术教育部重点实验室; |
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| 基金项目： | 北京信息科技大学校基金项目(5026010963) |
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| 摘 要： | 针对某类型激振器关键部件转动惯量变化引起的转振动问题，对双支扭转旋转系统扭转振动进行了理论分析，建立了系统状态方程和离散状态方程。分析了系统关键部件转动惯量变化后系统固有模态的变化以及系统动态特性条件下响应的变化。研究结果表明：当关键部件转动惯量的变化量在3％范围内时，系统个阶固有频率也随之变化，但是变化幅度不大；固有阵型相位变化较大，同时系统的动态响应也随之变化。该研究对于系统故障分析指标的确定以及系统安全运行管理具有积极的意义。
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| 关 键 词： | 双支旋转系统 扭转振动 固有模态 |
Theoretical analysis of torsional vibration of rotational system with two branches |
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| MA Chao,XU Xiao-li,WU Guo-xin. Theoretical analysis of torsional vibration of rotational system with two branches[J]. Journal of Beijing Institute of Machinery, 2011, 0(3): 87-90,95 |
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| Authors: | MA Chao XU Xiao-li WU Guo-xin |
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| Affiliation: | MA Chao,XU Xiao-li,WU Guo-xin(Key Laboratory of Modern Measurement and Control Technology,Ministry of Education,Beijing Information Science and Technology University,Beijing 100192,China) |
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| Abstract: | To solve the torsional vibration problem of a vibration generator caused by changes of the inertia moments of crucial part,the theory of torsional vibration of rotational system with two branches is analysed.By using state-space method,the continuous and discrete state-space systems are set up.The national characters and the responses under the certain case are computed for changes of the inertia moment of crucial part of the system in the scales of 3 percent.The results show that the national frequencies c... |
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| Keywords: | rotational system with two branches torsional vibration intrinsic mode |
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