摘要
对某型号汽车座椅气泵电机的低频(20~200 Hz)振动噪声来源进行分析,采用阶次分析方法确认主要频率对应电机的第一阶振动噪声。并针对转子动不平衡量和转子气隙偏心采用仿真分析和实验验证等方法,使电机低频段振动和噪声值降低至预定范围,满足设计要求。结果表明,对于转子动不平衡量,合理控制动不平衡量值,有利于低频振动和噪声值的降低。转子气隙偏心方面,随着气隙偏心距的增加,径向不平衡磁拉力也会越明显。较小的气隙偏心距对电机的低频振动噪声的改善有较大的帮助。该研究和验证结果可为类似电机的低频NVH性能改善提供有效的理论支撑和试验依据。
The low-frequency(20~200 Hz)vibration and noise sources of a type of air pump motor applied on automobile seat were analyzed.The first order of vibration and noise corresponding to the main frequency was confirmed through the order analysis.The methods of simulation analysis and test verification were used to reduce the vibration and noise values of the motor in the low-frequency band to meet the design requirements.The results show that for rotor dynamic unbalance,reasonable control of dynamic unbalance amount is beneficial to reduce the low-frequency vibration and noise level.In terms of rotor air gap eccentricity,with the increase of air gap eccentricity,the radial unbalanced magnetic pull will be more obvious.The smaller air eccentricity is of great help to the improvement of low-frequency vibration and noise of the motor.The results of the study and verification provide effective theoretical support and experimental basis for the improvement of low-frequency NVH performance of similar motors.
作者
龚乘龙
莫德云
GONG Chenglong;MO Deyun(Guangdong Zhaoqing L&V Co.,Ltd.,Zhaoqing 526238,China;Guangdong Engineering Technology Research Center for Vehicle Comfort System,Zhaoqing 526238,China;School of Mechanical and Electrical Engineering,Lingnan Normal University,Zhanjiang 524048,China)
出处
《微特电机》
2023年第3期14-18,24,共6页
Small & Special Electrical Machines
基金
广东省普通高校青年创新人才项目(2021KQNCX047)。
关键词
永磁直流电机
阶次分析
低频振动
低频噪声
NVH分析
permanent magnet DC motor
order analysis
low-frequency vibration
low-frequency noise
NVH analysis
