| 摘要 |
A method and apparatus for valve position state estimation within a conduit or conduit network, comprising: acoustically coupling acoustic sensors to a fluid disposed within the conduit or conduit network, wherein one of the acoustic sensors is disposed upstream of a valve under test and one of the plurality of acoustic sensors is disposed downstream of the valve under test; transmitting a structured acoustic signal from a transmitting acoustic sensor to a receiving acoustic sensor; receiving a reflected structured acoustic signal after the structured acoustic signal is reflected from the valve under test; and, using a two-port analysis, characterizing a flow state of the valve under test based on the structured acoustic signal received at the receiving acoustic sensor and the reflected structured acoustic signal received at the transmitting acoustic sensor; coupling an accelerometer sensor to the valve under test and obtaining vibrational measurements from the valve under test. |
