The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 2010
Filed:
Dec. 13, 2007
Rene Friedrichs, Rosdorf, DE;
Lothar Deppe, Goettingen, DE;
Steffen Keller, Constance, DE;
Joerg Gebhardt, Mainz, DE;
Frank Kassubek, Rheinfelden, DE;
Rene Friedrichs, Rosdorf, DE;
Lothar Deppe, Goettingen, DE;
Steffen Keller, Constance, DE;
Joerg Gebhardt, Mainz, DE;
Frank Kassubek, Rheinfelden, DE;
ABB Patent GmbH, Ladenburg, DE;
Abstract
A process is disclosed for operating a measurement device of the vibration type in which at least one exciter arrangement excites the system to vibration and from the vibration parameters, a measurement quantity of a measurement medium in a tube system is determined. A time-dependent force f(t)=F sin(ωt)+g(t) with at least one sinusoidal component with an adjustable frequency ω can be used which acts on at least one vibration-capable part of the measurement device of the vibration type. A response signal of the vibration-capable part, (e.g., its time dependent velocity v(t)=V sin(ωt+ψ)+h(t)) can be measured, and a phase shift Ψ between the response signal and the force f of a signal component which oscillates with a frequency ω is determined. The phase shift Ψ can be used as the input for a frequency controller so that the excitation frequency is automatically adjusted as a function of Ψ.