励磁方法对浆液噪声的影响  

Effect of Excitation Method on Slurry Noise

作　　者：孙海钦 李斌[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200444

出　　处：《工业控制计算机》2019年第5期153-154,157,共3页Industrial Control Computer

摘　　要：在污水处理系统中应用电磁流量计时,不可避免地会因浆液噪声的存在而影响到流量测量的精度等重要指标。大量理论和实验表明,浆液噪声符合1/f特性,通过提高励磁频率可以抑制浆液噪声的大小。但一味地提高励磁频率又会引入微分干扰、零点漂移等其他问题。从另一个角度探讨了不同励磁方式对浆液噪声的影响,对电磁流量计的发展起到积极作用。A large number of theories and experiments have shown that the magnitude of the slurry noise with the 1/f characteristic can be suppressed by increasing the excitation frequency.However,blindly increasing the excitation frequency introduces other problems such as differential interference and zero drift.In other opinion,this paper discusses the influence of different excitation methods on the slurry noise,and plays a positive role in the development of electromagnetic flowmeter.

关 键 词：电磁流量计 浆液噪声 励磁技术 

分 类 号：X703[环境科学与工程—环境工程] TH814[机械工程—仪器科学与技术]