DAVID WALTER CAMPBELL
Pilots at Dellwood Ave, Boulder, CO

6694279, Feb 17, 2004

Feb 16, 2001

09/788194

Timothy J. Cunningham - Boulder CO
David Lee Campbell - Boulder CO
Thomas Dean Sharp - Terrace Park OH

Micro Motion, Inc. - Boulder CO

G06F 1700

702106, 702 45, 702 54, 702190, 73861356

Movement of a structure, such a conduit of a Coriolis mass flowmeter, is estimated. A plurality of motion signals representing motion of the structure are mode selective filtered to generate a plurality of mode selective filtered motion signals such that the mode selective filtered motion signals preferentially represent motion associated with a vibrational mode of the structure. A plurality of phase estimates is generated from the plurality of mode selective filtered motion signals. The plurality of phase estimates may be generated using a phase reference derived from a mode selective filtered motion signal of the plurality of mode selective filtered motion signals. According to some embodiments, a frequency of a mode selective filtered motion signal is estimated, and quadrature first and second reference signals are generated based on the estimated frequency. The plurality of phase estimates is generated from the mode selective filtered motion signals and the reference signals.

6466880, Oct 15, 2002

Feb 16, 2001

09/788189

Timothy J. Cunningham - Boulder CO
David Lee Campbell - Boulder CO
Thomas Dean Sharp - Terrace Park OH

Micro Motion, Inc. - Boulder CO

G06F 1760

702 50, 702 43, 702189, 702188, 702 55

Mass flow of a material in a conduit is estimated by mode selective filtering a plurality of motion signals representing motion of the conduit to generate a plurality of mode selective filtered motion signals such that the mode selective filtered motion signals preferentially represent motion associated with a vibrational mode of the conduit. A plurality of phase estimates is generated from the plurality of mode selective filtered motion signals. A mass flow estimate is generated from the plurality of phase estimates. The plurality of phase estimates may be estimated using a phase reference derived from one of the plurality of mode selective filtered motion signals. In some embodiments, a frequency of a mode selective filtered motion signal of the plurality of mode selective filtered motion signals is estimated. Quadrature first and second reference signals are generated based on the estimated frequency. The plurality of phase estimates is generated from the plurality of mode selective filtered motion signals and the first and second reference signals.

6535826, Mar 18, 2003

Feb 16, 2001

09/785869

Timothy J. Cunningham - Boulder CO
David Lee Campbell - Boulder CO
Thomas Dean Sharp - Terrace Park OH

Micro Motion, Inc. - Boulder CO

G06F 100

702 45, 702100, 73861352, 73861356

Motion signals representing motion of a conduit of a mass flowmeter are mode selective filtered to generate a plurality of mode selective filtered motion signals such that the plurality of mode selective filtered motion signals preferentially represent motion associated with a vibrational mode of the conduit. A plurality of time difference estimates is generated from the plurality of mode selective filtered motion signals. A correlation measure is generated from the plurality of time difference estimates. A status of the mass flowmeter system is determined from the generated correlation measure. In some embodiments, the correlation measure comprises an intercept parameter of a scaling function that relates the plurality of time difference estimates to a plurality of reference time differences representing motion of the conduit at a known mass flow. In other embodiments, the correlation measure comprises a correlation coefficient estimated from the plurality of time difference estimates. In still other embodiments, the correlation measure comprises an error of estimate.

5987998, Nov 23, 1999

Aug 26, 1998

9/140098

David Lee Campbell - Boulder CO
John Richard McCarthy - Boulder CO
Kurtis Leroy McCormick - Lafayette CO
Daniel Patrick McNulty - Westminster CO

Micro Motion, Inc. - Boulder CO

G01F 178

73861356

A drive system for use in a temperature environment. The drive system is made of materials that can withstand high temperatures without degrading. There are no plastics or epoxy adhesives used in this drive system. The drive system is also made more efficient by placing the drive system on a flow tube outside of a loop in the flow tube between the inlet and the outlet.