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Optimal On-line Sampling Period Assignment for Real-Time Control Tasks Based on Plant State Information

Henriksson, Dan LU and Cervin, Anton LU (2005) 44th IEEE Conference on Decision and Control, and the European Control Conference, CDC-ECC '05 In Proceedings of the 44th IEEE Conference on Decision and Control and the 2005 European Control Conference p.4469-4474
Abstract
The paper presents a feedback scheduling strategy for multiple control tasks that uses feedback from the plant states to distribute the computing resources optimally among the tasks. Linear-quadratic controllers are analyzed, and expressions relating the expected cost to the sampling period and the plant state are derived and used for on-line sample-rate adjustments. In the case of minimum-variance control of multiple integrator processes, an exact expression for the optimal sampling periods is obtained. For the general case, an on-line optimization procedure is developed. The approach is exemplified on a set of controllers for first-order systems. The issues of computational delay and the choice of the feedback scheduler period are also... (More)
The paper presents a feedback scheduling strategy for multiple control tasks that uses feedback from the plant states to distribute the computing resources optimally among the tasks. Linear-quadratic controllers are analyzed, and expressions relating the expected cost to the sampling period and the plant state are derived and used for on-line sample-rate adjustments. In the case of minimum-variance control of multiple integrator processes, an exact expression for the optimal sampling periods is obtained. For the general case, an on-line optimization procedure is developed. The approach is exemplified on a set of controllers for first-order systems. The issues of computational delay and the choice of the feedback scheduler period are also discussed. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Plant state information, Linear-quadratic controllers, Multiple control tasks
in
Proceedings of the 44th IEEE Conference on Decision and Control and the 2005 European Control Conference
pages
4469 - 4474
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
44th IEEE Conference on Decision and Control, and the European Control Conference, CDC-ECC '05
external identifiers
  • WOS:000240653704052
  • Scopus:33847209916
ISBN
0-7803-9568-9
DOI
10.1109/CDC.2005.1582866
language
English
LU publication?
yes
id
5c8e662e-0879-4998-8496-3d3afa6222f2 (old id 535764)
date added to LUP
2007-09-19 15:55:06
date last changed
2016-12-04 04:45:37
@misc{5c8e662e-0879-4998-8496-3d3afa6222f2,
  abstract     = {The paper presents a feedback scheduling strategy for multiple control tasks that uses feedback from the plant states to distribute the computing resources optimally among the tasks. Linear-quadratic controllers are analyzed, and expressions relating the expected cost to the sampling period and the plant state are derived and used for on-line sample-rate adjustments. In the case of minimum-variance control of multiple integrator processes, an exact expression for the optimal sampling periods is obtained. For the general case, an on-line optimization procedure is developed. The approach is exemplified on a set of controllers for first-order systems. The issues of computational delay and the choice of the feedback scheduler period are also discussed.},
  author       = {Henriksson, Dan and Cervin, Anton},
  isbn         = {0-7803-9568-9},
  keyword      = {Plant state information,Linear-quadratic controllers,Multiple control tasks},
  language     = {eng},
  pages        = {4469--4474},
  publisher    = {ARRAY(0xb34a1d0)},
  series       = {Proceedings of the 44th IEEE Conference on Decision and Control and the 2005 European Control Conference},
  title        = {Optimal On-line Sampling Period Assignment for Real-Time Control Tasks Based on Plant State Information},
  url          = {http://dx.doi.org/10.1109/CDC.2005.1582866},
  year         = {2005},
}