Vibratory meter and method for determining resonant frequency
First Claim
1. A vibratory meter (5) comprising one or more flow conduits (103), one or more pickoff sensors (105, 105′
- ) affixed to the one or more flow conduits (103), and a driver (104) configured to vibrate the one or more flow conduits (103), with the vibratory meter (5) being characterized by;
meter electronics (20) coupled to the one or more pickoff sensors (105, 105′
) and to the driver (104), with the meter electronics (20) being configured to vibrate the one or more flow conduits (103) of the vibratory meter (5) using a drive signal including an initial vibration frequency and to receive a pickoff sensor signal from the one or more pickoff sensors (105, 105′
) in response, iteratively offset a phase difference between the drive signal and the pickoff sensor signal by a predetermined phase increment and measure a resulting vibrational frequency and amplitude, with the offsetting operatively resulting vibration frequency being used to sweep over a predetermined vibration frequency range and therefore generating a plurality of vibration amplitudes and a corresponding plurality of vibration frequencies, and determine a substantially maximum amplitude response in the plurality of vibration amplitudes and designate the corresponding vibration frequency as comprising a resonant frequency.
1 Assignment
0 Petitions
Accused Products
Abstract
A vibratory meter (5) is provided, including one or more flow conduits (103), one or more pickoff sensors (105, 105′), and a driver (104). Meter electronics (20) is configured to vibrate the one or more flow conduits (103) using a drive signal including an initial vibration frequency and to receive a pickoff sensor signal from the one or more pickoff sensors (105, 105′) in response, iteratively offset a phase difference between the drive signal and the pickoff sensor signal by a predetermined phase increment and measure a resulting vibrational frequency and amplitude, with the offsetting operatively sweeping the vibration frequency over a predetermined vibration frequency range and therefore generating a plurality of vibration amplitudes and a corresponding plurality of vibration frequencies, and determine a substantially maximum amplitude response in the plurality of vibration amplitudes and designate the corresponding vibration frequency as comprising the resonant frequency.
-
Citations
20 Claims
-
1. A vibratory meter (5) comprising one or more flow conduits (103), one or more pickoff sensors (105, 105′
- ) affixed to the one or more flow conduits (103), and a driver (104) configured to vibrate the one or more flow conduits (103), with the vibratory meter (5) being characterized by;
meter electronics (20) coupled to the one or more pickoff sensors (105, 105′
) and to the driver (104), with the meter electronics (20) being configured to vibrate the one or more flow conduits (103) of the vibratory meter (5) using a drive signal including an initial vibration frequency and to receive a pickoff sensor signal from the one or more pickoff sensors (105, 105′
) in response, iteratively offset a phase difference between the drive signal and the pickoff sensor signal by a predetermined phase increment and measure a resulting vibrational frequency and amplitude, with the offsetting operatively resulting vibration frequency being used to sweep over a predetermined vibration frequency range and therefore generating a plurality of vibration amplitudes and a corresponding plurality of vibration frequencies, and determine a substantially maximum amplitude response in the plurality of vibration amplitudes and designate the corresponding vibration frequency as comprising a resonant frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- ) affixed to the one or more flow conduits (103), and a driver (104) configured to vibrate the one or more flow conduits (103), with the vibratory meter (5) being characterized by;
-
11. A method of determining resonant frequency in a vibratory meter, with the method including vibrating one or more flow conduits of the vibratory meter using a drive signal including an initial vibration frequency and receiving a pickoff sensor signal in response, with the method being characterized by:
-
iteratively offsetting a phase difference between the drive signal and the pickoff sensor signal by a predetermined phase increment and measuring a resulting vibrational frequency and amplitude, with the offsetting operatively resulting vibration frequency being used to sweep over a predetermined vibration frequency range and therefore generating a plurality of vibration amplitudes and a corresponding plurality of vibration frequencies; and determining a substantially maximum amplitude response in the plurality of vibration amplitudes and designating the corresponding vibration frequency as comprising the resonant frequency. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification