1996
DOI: 10.1002/aic.690420916
|View full text |Cite
|
Sign up to set email alerts
|

Abstract: An enhanced automatic tuning procedure developed for process control of PI and PID controllers addresses several potential problems present in current standard autotuners. The proposed enhanced autotuner uses a novel technique based on relay feedback to estimate the process frequency response at two specified phase lags on the Nyquist curve automatically. An iterative procedure then uses these two points to obtain a transfer--function model of the process. Based on this model and a controller-selection scheme,… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
45
0

Year Published

2004
2004
2014
2014

Publication Types

Select...
4
4
1

Relationship

0
9

Authors

Journals

citations
Cited by 86 publications
(45 citation statements)
references
References 11 publications
0
45
0
Order By: Relevance
“…It should be noted that ffG(jx u ) 5 2p had been used for parameter identification in the existing literature 1,2,[7][8][9]20,21 based on the describing function analysis. Such exercise may result in degraded identification accuracy since ffG(jx u ) is [Color figure can be viewed in the online issue, which is available at www.interscience.…”
Section: Proof See Appendix (I)mentioning
confidence: 99%
“…It should be noted that ffG(jx u ) 5 2p had been used for parameter identification in the existing literature 1,2,[7][8][9]20,21 based on the describing function analysis. Such exercise may result in degraded identification accuracy since ffG(jx u ) is [Color figure can be viewed in the online issue, which is available at www.interscience.…”
Section: Proof See Appendix (I)mentioning
confidence: 99%
“…For instance, the relay in cascade of an integrator is able to identify a point on the negative imaginary axis [29]; a relay with hysteresis can provide an effect of shifting the real axis so as to identify a point in the third quadrant [28]; the twochannel relay consisting of an ideal relay in parallel with a relay plus an integrator can also identify a model at the phase range of [− π 2 , −π], [30]; the relay with an artificial time delay in [31] provides an even bigger identifiable phase range. An important variant of relay that worth a mention is the parasitic relay which can identify two points from a single relay test [33].…”
Section: Obtaining System Information From the Relay Feedback Testmentioning
confidence: 99%
“…They are a test that uses an additional time delay [7], test with an additional integrator term [8], test using a phase-lock loop [9]. Some of them are better suitable for producing oscillations at the desired phase lag than others.…”
Section: Arbitrary Phase Lagmentioning
confidence: 99%