Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/32612
Title: Apparatus for relay based multiple point process frequency response estimation and control tuning
Authors: WANG, QING-GUO 
HANG, CHANG CHIEH 
BI, QIANG
Issue Date: 20-Aug-2002
Source: WANG, QING-GUO,HANG, CHANG CHIEH,BI, QIANG (2002-08-20). Apparatus for relay based multiple point process frequency response estimation and control tuning. ScholarBank@NUS Repository.
Abstract: Briefly, a preferred embodiment of the present invention includes an apparatus for tuning a regulator in a process controller. The digitized output from a standard relay and a parasitic relay are fed through digital to analog converter providing signals at 0.5.omega..sub.c, .omega..sub.c and 1.5.omega..sub.c to the process, where .omega..sub.c is the process critical frequency. The apparatus records the digitized relay output u' and the digitized process output y' until stationary oscillations are reached. The outputs u' and y' are then used to calculate the process frequency response at 0.50.omega..sub.c, .omega..sub.c and 1.5.omega..sub.c. This data is then used to design the regulator, the output of which is converted to analog form and inputted to control the process.
URI: http://scholarbank.nus.edu.sg/handle/10635/32612
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
US6438431.PDF122.92 kBAdobe PDF

OPEN

PublishedView/Download

Page view(s)

154
checked on Dec 8, 2017

Download(s)

104
checked on Dec 8, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.