Invention Grant
- Patent Title: Methods and apparatus to limit a change of a drive value in an electro-pneumatic controller
- Patent Title (中): 限制电动气动控制器中驱动值变化的方法和装置
-
Application No.: US12419822Application Date: 2009-04-07
-
Publication No.: US08306637B2Publication Date: 2012-11-06
- Inventor: Stephen George Seberger
- Applicant: Stephen George Seberger
- Applicant Address: US IA Marshalltown
- Assignee: Fisher Controls International, LLC
- Current Assignee: Fisher Controls International, LLC
- Current Assignee Address: US IA Marshalltown
- Agency: Hanley, Flight & Zimmerman, LLC
- Main IPC: G05B13/02
- IPC: G05B13/02
Abstract:
Example methods and apparatus to limit a change of a drive value in an electro-pneumatic controller are disclosed. A disclosed example method includes receiving a control signal and a feedback signal, calculating from the control signal and the feedback signal a drive value, determining if a difference between the drive value and a previous drive value is greater than a slew limit of the electro-pneumatic controller, and changing the calculated drive value based on the slew limit.
Public/Granted literature
- US20100256784A1 METHODS AND APPARATUS TO LIMIT A CHANGE OF A DRIVE VALUE IN AN ELECTRO-PNEUMATIC CONTROLLER Public/Granted day:2010-10-07
Information query
