汽车雨刮器电机电磁辐射干扰预测模型
Prediction model on the radiated electromagnetic interference of wiper motor in automobile
摘要 根据信号与系统理论,导出了辐射系统的传递函数;建立了基于FIT算法的雨刮器电机辐射系统计算模型,并用仿真软件CST计算获得了系统的传递函数;电机端电压作为系统的辐射干扰源,用实验的方法获取;传递函数和电机端电压之积便是电机产生的辐射电场.由此,将复杂的电机辐射问题转化为提取系统传递函数和测量电机端电压的较为简单的问题来处理.仿真与实验结果的对比说明,该辐射干扰预测模型能够准确反映电机电磁辐射系统的基本特征,可用于雨刮器电机的电磁兼容预测研究.
Abstract:
According to the theory of signals and systems,the radiated system's transfer function is derived,the radiation electromagnetic interference(EMI)simulation model of the wiper motor based on the finite integration technique(FIT) algorithm is established,and the whole system's transfer function are obtained in the environment of simulation software CST.The terminal voltage of the motor,as the noise source of radiation system,can be gained with experiment.The radiation electric field can be calculated by transfer function multiplying motor's terminal voltage.Then the complex question of motor's system-level radiation can be transformed to the simple problems of computing system's transfer function and the motor's terminal voltage.By comparing simulation and experiment results,it is showed that the radiated EMI simulation model of the motor can demonstrate the essential feature of motor's electromagnetic radiation system accurately,which means that it can be used in the research of wiper motor EMC forecasting.
Author: WANG Quan-di LI Fei ZHOU Shang-hua LIU Qing-song WEI Xin SI Hai-tao
作者单位: 重庆大学,输配电装备及系统安全与新技术国家重点实验室,重庆,400044 重庆大学,输配电装备及系统安全与新技术国家重点实验室,重庆,400044;重庆嘉斯特质量检测有限公司,重庆,401122 四川电力职业技术学院,成都,610072
刊 名 重庆大学学报 ISTICEIPKU
年,卷(期): 2010, 33(4)
分类号: TM331
机标分类号: TN9 TM1
基金项目: 国家自然科学基金,重庆大学"211工程"资助项目