基于TMS320F28335的高精度科氏质量流量变送器研制  

Development of high-accuracy Coriolis mass flow transmitter based on TMS320F28335

作　　者：侯其立[1] 徐科军[1,2] 李叶[1] 朱永强[1] 李苗[1] 

机构地区：[1]合肥工业大学电气与自动化工程学院,合肥230009 [2]工业自动化安徽省工程技术研究中心,合肥230009

出　　处：《仪器仪表学报》2010年第12期2788-2795,共8页Chinese Journal of Scientific Instrument

基　　金：国家"863"计划(2009AA04Z128);合肥工业大学专利转化基金(2008HGCZ0523)资助项目

摘　　要：为了提高科里奥利质量流量变送器的抗干扰能力和小流量测量精度,将带通滤波器、格型自适应陷波滤波器和计及负频率影响的DTFT算法有机地结合起来,应用于科里奥利质量流量传感器的信号处理。研制基于TMS320F28335 DSP芯片的科里奥利质量流量变送器系统,给出了系统硬件和软件的实现方案,详细介绍了算法在DSP上的实时实现。进行了系统测试和工业现场的标定实验,实验结果表明,所研制的变送器具有较高的测量精度和较宽的量程比。To improve the ability of anti-interference and the accuracy of small flow rate measurement,a set of digital signal processing algorithms that consist of digital band-pass filter,adaptive lattice notch filter and DTFT algorithm considering negative frequency contribution are proposed and applied to Coriolis mass flow transmitter design.A Coriolis mass flow transmitter was developed with TMS320F28335 chip.The hardware and software design schemes are presented,and the real-time implementation of the algorithms is introduced in detail.System tests and water flow rate calibrations of the transmitter were performed.Experimental results show that the transmitter possesses both high accuracy and wide range-ratio.

关 键 词：科里奥利质量流量计 高精度 格型自适应陷波器 计及负频率的DTFT算法 TMS320F28335 

分 类 号：TH814[机械工程—仪器科学与技术]