Jump to ContentJump to Main Navigation

New Journal at De Gruyter!

Chemical Product and Process Modeling

Ed. by Sotudeh-Gharebagh, Rhamat / Mostoufi, Navid / Chaouki, Jamal

2 Issues per year

Estimating Output Variance in Closed Loop Systems

Ming T. Tham1 / Richard W. Jones2 / Ibrahim Al-Hinai3

1School of Chemical Engineering and Advanced Materials, Newcastle University, UK

2Mads Clausen Institute for Product Innovation, Southern Denmark University, Sonderborg, Denmark

3Petroleum Development Oman, Oman

Citation Information: Chemical Product and Process Modeling. Volume 2, Issue 1, ISSN (Online) 1934-2659, DOI: 10.2202/1934-2659.1026, March 2007

Publication History

Published Online:
2007-03-07

This paper attempts to address a common difficulty encountered when trying to justify a process control revamp or upgrading project — the ability to quantify potential savings/profits. A relatively simple procedure that is applicable to both continuous and digital controllers is described. Given models of the process and the controller, knowledge of the disturbance frequencies and their variances, the method is able to predict accurately the variance of the controlled output of linear control systems.

Keywords: output variance; control benefits assessment; control performance

Comments (0)

Please log in or register to comment.
Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.