太赫兹科学与电子信息学报
太赫玆科學與電子信息學報
태혁자과학여전자신식학보
Information and Electronic Engineering
2014年
1期
127-131
,共5页
科氏质量流量计%模糊比例积分控制%幅值控制%批料流/两相流
科氏質量流量計%模糊比例積分控製%幅值控製%批料流/兩相流
과씨질량류량계%모호비례적분공제%폭치공제%비료류/량상류
Coriolis mass flowmeter%fuzzy-PI control%amplitude control%batching/two-phase flow
科氏质量流量计的工作原理建立在振动的基础上，良好的流量管振动控制是产生精确测量数据的前提。传统的模拟控制方法增益有限，动态响应慢，导致流量管振动不稳定甚至停振。为改善对测量管振幅的控制，本文采用模糊比例积分(PI)控制方法，并根据牛津大学对两相流进行试验得到的数据，模拟在两相流发生过程中阻尼比的变化规律，在 Simulink 中建立驱动系统仿真模型，并与传统的 PI控制方法进行比较。结果显示，采用模糊 PI控制方法能使流量管响应速度更快，且振动幅值更稳定。
科氏質量流量計的工作原理建立在振動的基礎上，良好的流量管振動控製是產生精確測量數據的前提。傳統的模擬控製方法增益有限，動態響應慢，導緻流量管振動不穩定甚至停振。為改善對測量管振幅的控製，本文採用模糊比例積分(PI)控製方法，併根據牛津大學對兩相流進行試驗得到的數據，模擬在兩相流髮生過程中阻尼比的變化規律，在 Simulink 中建立驅動繫統倣真模型，併與傳統的 PI控製方法進行比較。結果顯示，採用模糊 PI控製方法能使流量管響應速度更快，且振動幅值更穩定。
과씨질량류량계적공작원리건립재진동적기출상，량호적류량관진동공제시산생정학측량수거적전제。전통적모의공제방법증익유한，동태향응만，도치류량관진동불은정심지정진。위개선대측량관진폭적공제，본문채용모호비례적분(PI)공제방법，병근거우진대학대량상류진행시험득도적수거，모의재량상류발생과정중조니비적변화규률，재 Simulink 중건립구동계통방진모형，병여전통적 PI공제방법진행비교。결과현시，채용모호 PI공제방법능사류량관향응속도경쾌，차진동폭치경은정。
Coriolis mass flowmeter is built on the basis of vibration, so that better flow-tube vibration control is the premise of accurate measurement data. The limited gain and slow dynamic response of the traditional methods lead to unstable vibration or even stopped. In order to improve the amplitude control, a fuzzy-Proportional Integral(PI) control method is presented, and according to two-phase flow experimental data from Oxford University, the damping change pattern is simulated to reflect the process of two-phase flow. The driving system simulation model is established in Simulink and is compared with the traditional PI control methods, which demonstrates that the proposed method can obtain faster response speed, and more stable vibration amplitude.
