塑封电机负载异常低频噪声分析及改善  

Analysis and Improvement on Load Abnormal Low-frequency Noise of Plastic Package Motor

作　　者：丁佳婷 高晓峰 艾桂林 李庆 

机构地区：[1]珠海凯邦电机制造有限公司,珠海519110

出　　处：《日用电器》2018年第11期96-99,共4页ELECTRICAL APPLIANCES

摘　　要：针对塑封电机在负载测试阶段出现的异常低频噪声问题进行分析。通过噪声测试和声强测试手段的综合运用,比较不同噪声频谱,确认低频噪声产生的机制。由于电机胶圈设计不合理导致胶圈与端盖过量配合,使橡胶缓冲作用消失,与负载产生共振;转子斜槽设计不合理,导致转子与电机产生共振在低频段的响应幅值被放大,在电机谐波频率的激励下,产生异常低频噪声。最终通过调整胶圈尺寸和斜槽尺寸,有效解决电机噪声问题。The issue of abnormal low-frequency noise of plastic package motor during development process is analyzed.Through comprehensive application of noise test and sound intensity test,the mechanism of low frequency noise is confirmed by comparing different noise spectrum.Due to unreasonable design of motor aprons,the interference fit between rubber ring and the end cover makes the rubber buffer disappear and resonate with load.The design of rotor inclined slot is unreasonable,which causes the resonance of rotor and makes the motor amplified in low frequency response,and the abnormal low frequency noise is produced under the excitation of harmonic frequency of motor.Finally,by adjusting the size of the apron and the size of the chute,the problem of motor noise can be effectively solved.

关 键 词：塑封电机 低频噪声 噪声测试 

分 类 号：TM30[电气工程—电机]