Patent · US Active

Method for position-dependent electronic wear state determination of a valve mechanism, and a pneumatic valve

US8509952B2 · kind B2 · utility

1Cited by

4References

15Claims

0Family size

Assignee

ABB TECHNOLOGY AG · CH

Inventors

Andreas Stelter · Minden, DE
Urs E. Meier · Aesch, CH
Detlef Pape · Nussbaumen, CH

Key dates

Filing date	Dec 22, 2009
Grant date	Aug 13, 2013
Priority date	—
Expiry date	Nov 5, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87209
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method and a valve arrangement are provided for electronic wear state determination of the valve arrangement for controlling a process medium flow. A valve element, which is arranged so as to move axially within a valve housing, is moved via electrically drivable linear drive means on the basis of positioning regulation. The valve element has an essentially constant drive force applied to it, and a position speed profile over the switching travel of the valve element is determined by detecting the speed as a function of the current position of the valve element. A change profile is created by comparing the determined speed profile with previous position speed profiles, as a measure of the position-dependent wear state of the valve mechanism.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.