| 高速电机转子临界转速计算与振动模态分析 |
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| 引用本文： | 王天煜,王凤翔,方程,孔晓光. 高速电机转子临界转速计算与振动模态分析[J]. 辽宁工程技术大学学报(自然科学版), 2009, 28(5) |
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| 作者姓名： | 王天煜 王凤翔 方程 孔晓光 |
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| 作者单位： | 1. 沈阳工程学院,机械工程系,辽宁,沈阳,110136;沈阳工业大学电气工程学院,辽宁,沈阳,1101361
2. 沈阳工业大学电气工程学院,辽宁,沈阳,1101361 |
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| 基金项目： | 国家自然科学基金重点项日资助，辽宁省教育厅科技基金项目资助(2008483):2008年沈阳工程学院科技项目 |
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| 摘 要： | 采用3D有限元方法,计算磁力轴承转子系统临界转速并分析振动模态,利用磁悬浮转子系统自身悬浮特性进行激振实验,确定有限元模型中磁力轴承支承刚度,有限元法计算的临界转速与转子系统实际运行临界转速相一致.研究表明,磁力轴承刚度对转子临界转速影响很大,可以通过改变磁力轴承刚度和转子材料来调整临界转速;为了避免转子超越弯曲模态的临界转速,转子轴伸长度应控制在安全范围内.
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| 关 键 词： | 高速电机 磁力轴承-转子系统 临界转速 有限元方法 |
Critical speed calculation and mode analysis of rotor for high speed motor |
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| WANG Tianyu,WANG Fengxiang,FANG Cheng,KONG Xiaoguang. Critical speed calculation and mode analysis of rotor for high speed motor[J]. Journal of Liaoning Technical University (Natural Science Edition), 2009, 28(5) |
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| Authors: | WANG Tianyu WANG Fengxiang FANG Cheng KONG Xiaoguang |
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| Affiliation: | WANG Tianyu1,2,WANG Fengxiang2,FANG Cheng2,KONG Xiaoguang2(1.College of Mechanical and Engineering,Shenyang Institute of Engineering,Shenyang 110136,China,2.School of Electrical Engineering,Shenyang University of Technology,Shenyang 110178,China) |
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| Abstract: | A 3D finite element analysis(FEA) is used to establish the critical speed and vibration mode of the magnetic bearing-rotor system of high-speed motor.Also,the bearing stiffness of 3D-FEA model was determined using vibration experiment according to the suspension characteristics of the magnetic bearing system.The critical speeds calculated using FEA are consistent with actual results of the rotor system.The study shows that the bearing stiffness has significant impact on the critical speed of rotor.The criti... |
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| Keywords: | high speed motor magnetic bearing-rotor system critical speed finite element analysis |
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