摘要
针对汽车发动机闭式循环冷却系统中的冷却水泵性能测试的问题,提出了一种基于傅里叶变换的高效率测试系统方案,在水泵正常工作状态下,通过采集母线电压中的高频分量,对其进行离散傅里叶变换,将变换结果与水泵性能参数中的转速相关联,并进行分析比对。最后通过搭建实验平台获取的相关数据,证实了所提出方法的有效性。相较于利用联轴器装配测量转速信息的方法,所提出的方法适用于电动水泵生产线的总成性能高效测试,具备较好的实际应用价值。
The performance of the cooling water pump in the closed-cycle cooling system of an automobile engine directly affects the power and fuel economy of the vehicle.A performance testing system for high-efficiency electric water pump based on Fourier transform is proposed.Under normal working conditions of the water pump,the high-frequency components in the bus voltage are collected,the discrete Fourier transform is performed.The transform results are compared with the speed of the water pump.The relevant data obtained by building an experimental platform confirms the effectiveness of the method proposed in this paper.Comparing with the speed measuring method using the coupling assembly,the method proposed in this paper is efficient for assessing the assembly performance of the electric water pump production line.Overall,the latter has better practical application value.
作者
程鑫
董家伟
吴惠
王宁经
施恢胜
CHENG Xin;DONG Jiawei;WU Hui;WANG Ningjing;SHI Huisheng(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Province Magnetic Bearing Engineering Technology Research Center,Wuhan 430070,China)
基金
国家自然科学基金资助项目(51575411)
中央高校基本科研业务费专项资金资助项目(2019III143CG)
关键词
傅里叶变换
电动水泵
性能测试
转速测量
fourier transform(FFT)
electronic water pump
performance testing
rotor speed measurement
