Improved Relay Autotuning using Normalized Time Delay

Josefin Berner; Tore Hägglund; Karl Johan Åström

doi:10.1109/ACC.2016.7525191

Improved Relay Autotuning using Normalized Time Delay

Josefin Berner, Tore Hägglund, Karl Johan Åström

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

18 Citations (SciVal)

291 Downloads (Pure)

Abstract

The relay autotuner provides a simple way of
finding PID controllers of sufficient performance. By using
an asymmetric relay function the excitation of the process is
improved. This gives better models, and hence a better tuning,
without increasing the time consumption or complexity of the
experiment. Some processes demand more accurate modeling
and tuning to obtain controllers of sufficient performance.
These processes can be singled out by their normalized time
delays and be subject to further modeling efforts. The autotuner
proposed in this paper provides a simple way of finding
the normalized time delay from the experiment, and uses it
for model and controller selection. The autotuner has been
implemented and evaluated both in a simulation environment
and by industrial experiments.

Original language	English
Title of host publication	American Control Conference (ACC), 2016
Number of pages	7
DOIs	https://doi.org/10.1109/ACC.2016.7525191
Publication status	Published - 2016
Event	American Control Conference, 2016 - Boston, United States Duration: 2016 Jul 6 → 2016 Jul 8

Conference

Conference	American Control Conference, 2016
Abbreviated title	ACC 2016
Country/Territory	United States
City	Boston
Period	2016/07/06 → 2016/07/08

Subject classification (UKÄ)

Control Engineering

Access to Document

10.1109/ACC.2016.7525191

2016ACC_0323_FIAccepted author manuscript, 500 KB

18 Citations
1 Doctoral Thesis (compilation)

Automatic Controller Tuning using Relay-based Model Identification
Berner, J., 2017 Oct 10, Lund: Department of Automatic Control, Lund Institute of Technology, Lund University. 188 p.
Research output: Thesis › Doctoral Thesis (compilation)

Open Access
File

1 Finished

PID Control
Robertsson, A., THEORIN, A., Bernhardsson, B., Berner, J., Åström, K. J., Hast, M., Garpinger, O., Larsson, P., Hägglund, T., Romero Segovia, V. & Soltesz, K.
1900/01/01 → 2022/05/01
Project: Research

1 Presentation

American Control Conference, 2016
Josefin Berner (Speaker)
2016 Jul 6 → 2016 Jul 8
Activity: Talk or presentation › Presentation

Cite this

@inproceedings{e6044a0623cd42439820bed775a072e2,

title = "Improved Relay Autotuning using Normalized Time Delay",

abstract = "The relay autotuner provides a simple way offinding PID controllers of sufficient performance. By usingan asymmetric relay function the excitation of the process isimproved. This gives better models, and hence a better tuning,without increasing the time consumption or complexity of theexperiment. Some processes demand more accurate modelingand tuning to obtain controllers of sufficient performance.These processes can be singled out by their normalized timedelays and be subject to further modeling efforts. The autotunerproposed in this paper provides a simple way of findingthe normalized time delay from the experiment, and uses itfor model and controller selection. The autotuner has beenimplemented and evaluated both in a simulation environmentand by industrial experiments.",

author = "Josefin Berner and Tore H{\"a}gglund and {\AA}str{\"o}m, {Karl Johan}",

year = "2016",

doi = "10.1109/ACC.2016.7525191",

language = "English",

booktitle = "American Control Conference (ACC), 2016",

note = "American Control Conference, 2016, ACC 2016 ; Conference date: 06-07-2016 Through 08-07-2016",

}

TY - GEN

T1 - Improved Relay Autotuning using Normalized Time Delay

AU - Berner, Josefin

AU - Hägglund, Tore

AU - Åström, Karl Johan

PY - 2016

Y1 - 2016

N2 - The relay autotuner provides a simple way offinding PID controllers of sufficient performance. By usingan asymmetric relay function the excitation of the process isimproved. This gives better models, and hence a better tuning,without increasing the time consumption or complexity of theexperiment. Some processes demand more accurate modelingand tuning to obtain controllers of sufficient performance.These processes can be singled out by their normalized timedelays and be subject to further modeling efforts. The autotunerproposed in this paper provides a simple way of findingthe normalized time delay from the experiment, and uses itfor model and controller selection. The autotuner has beenimplemented and evaluated both in a simulation environmentand by industrial experiments.

AB - The relay autotuner provides a simple way offinding PID controllers of sufficient performance. By usingan asymmetric relay function the excitation of the process isimproved. This gives better models, and hence a better tuning,without increasing the time consumption or complexity of theexperiment. Some processes demand more accurate modelingand tuning to obtain controllers of sufficient performance.These processes can be singled out by their normalized timedelays and be subject to further modeling efforts. The autotunerproposed in this paper provides a simple way of findingthe normalized time delay from the experiment, and uses itfor model and controller selection. The autotuner has beenimplemented and evaluated both in a simulation environmentand by industrial experiments.

U2 - 10.1109/ACC.2016.7525191

DO - 10.1109/ACC.2016.7525191

M3 - Paper in conference proceeding

BT - American Control Conference (ACC), 2016

T2 - American Control Conference, 2016

Y2 - 6 July 2016 through 8 July 2016

ER -

Improved Relay Autotuning using Normalized Time Delay

Abstract

Conference

Subject classification (UKÄ)

Access to Document

Fingerprint

Research output

Automatic Controller Tuning using Relay-based Model Identification

Projects

PID Control

Activities

American Control Conference, 2016

Cite this