Invention Grant
- Patent Title: Method for position-dependent electronic wear state determination of a valve mechanism, and a pneumatic valve
- Patent Title (中): 阀机构位置相关电子磨损状态测定方法及气动阀
-
Application No.: US12644992Application Date: 2009-12-22
-
Publication No.: US08509952B2Publication Date: 2013-08-13
- Inventor: Andreas Stelter , Urs E. Meier , Detlef Pape
- Applicant: Andreas Stelter , Urs E. Meier , Detlef Pape
- Applicant Address: CH Zürich
- Assignee: ABB Technology AG
- Current Assignee: ABB Technology AG
- Current Assignee Address: CH Zürich
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: DE102008064359 20081222
- Main IPC: G05D7/00
- IPC: G05D7/00

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.
Public/Granted literature
Information query