转子的不平衡是汽车电机产生有害振动和噪声的重要原因,特别是汽车用暖风、雨刮等驱动微电机,工作转速较高、质量又小,引起的振动和噪声相应就大,因此转子都应校动平衡(以下简称校平衡)。上海汽车电机厂生产的交流发电机都没有提出平衡精度的等级要求,因此都不校动平衡进技术。根据本人前几年对国外同类型产品的测试比较,其不平衡量(重径积) Rotor imbalance is an important cause of harmful motor vehicle vibration and noise, especially for automotive heating winds, wipers and other micro-motor drive, high speed work, the quality is small, the vibration and noise caused by the corresponding large, so the rotor Should be balanced school (hereinafter referred to as school balance). None of the alternators manufactured by Shanghai Automotive Motor Factory proposed the level of balance accuracy, so neither of them balanced the technology. According to a few years ago I tested the same type of foreign products, the imbalance (heavy diameter plot)