发明名称 |
SELF-CHARACTERIZING VIBRATING CONDUIT PARAMETER SENSORS |
摘要 |
A self-characterizing vibrating conduit sensor (5) for measuring a process parameter in a material processing system (1) includes a conduit (103A-103B) configured to contain material from the material processing system (1) and a plurality of motion transducers (105-105') operative to produce a plurality of motion signals representing motion at a plurality of locations on the condui t (103A-103B). A modal parameter estimator (30) is configured to receive the plurality of motion signals and operative to estimate a modal parameter from the received plurality of motion signals. The modal parameter, e.g., a modal filter parameter or a force projection parameter, relates behavior of the conduit to behavior of a single degree of freedom (SDOF) system. A process parameter estimator 40 is configured to receive the plurality of motion signals, responsive to the modal parameter estimator and operative to estima te a process parameter associated with a material in the conduit from the received plurality of motion signals according to the estimated modal parameter. Techniques for estimating a modal parameter include a modified reciprocal modal vector (MRMV) estimation technique and an adaptive modal filtering technique.
|
申请公布号 |
CA2378746(C) |
申请公布日期 |
2005.05.10 |
申请号 |
CA20002378746 |
申请日期 |
2000.06.12 |
申请人 |
MICRO MOTION, INC. |
发明人 |
CUNNINGHAM, TIMOTHY J.;SHELLEY, STUART J. |
分类号 |
G01F1/84;G01N9/00;(IPC1-7):G01F1/84 |
主分类号 |
G01F1/84 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|