Delay-Aware Period Assignment in Control Systems
Bini, Enrico and Cervin, Anton LU
(2008)
29th IEEE Real-Time Systems Symposium
- Abstract
- We consider the problem of optimal static period assignment for multiple independent control tasks executing on the same CPU. Previous works have assumed that the control performance can be expressed as a function of the sampling rate only. Arguing that the control delay has a large impact on the control performance, in this work we include the control delay in the cost function. The delay is estimated using an approximate response-time analysis. Assuming linear cost functions for the controllers then allows us to solve the optimal period assignment problem analytically. The performance improvements over previous methods are verified in evaluations on synthetic task sets as well as detailed co-simulations of the controllers, the plants,... (More)
- We consider the problem of optimal static period assignment for multiple independent control tasks executing on the same CPU. Previous works have assumed that the control performance can be expressed as a function of the sampling rate only. Arguing that the control delay has a large impact on the control performance, in this work we include the control delay in the cost function. The delay is estimated using an approximate response-time analysis. Assuming linear cost functions for the controllers then allows us to solve the optimal period assignment problem analytically. The performance improvements over previous methods are verified in evaluations on synthetic task sets as well as detailed co-simulations of the controllers, the plants, and the scheduler. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1445562
- author
- Bini, Enrico
and Cervin, Anton
LU
- organization
- publishing date
- 2008
- type
- Contribution to conference
- publication status
- published
- subject
- conference name
- 29th IEEE Real-Time Systems Symposium
- conference location
- Barcelona, Spain
- conference dates
- 2008-11-30
- external identifiers
-
- scopus:67249145644
- language
- English
- LU publication?
- yes
- id
- ffa332f8-fc3a-4e6f-90f3-185dd0152c3f (old id 1445562)
- date added to LUP
- 2016-04-04 14:14:10
- date last changed
- 2024-06-09 08:26:32
@misc{ffa332f8-fc3a-4e6f-90f3-185dd0152c3f,
abstract = {{We consider the problem of optimal static period assignment for multiple independent control tasks executing on the same CPU. Previous works have assumed that the control performance can be expressed as a function of the sampling rate only. Arguing that the control delay has a large impact on the control performance, in this work we include the control delay in the cost function. The delay is estimated using an approximate response-time analysis. Assuming linear cost functions for the controllers then allows us to solve the optimal period assignment problem analytically. The performance improvements over previous methods are verified in evaluations on synthetic task sets as well as detailed co-simulations of the controllers, the plants, and the scheduler.}},
author = {{Bini, Enrico and Cervin, Anton}},
language = {{eng}},
title = {{Delay-Aware Period Assignment in Control Systems}},
url = {{https://lup.lub.lu.se/search/files/6312965/8229134.pdf}},
year = {{2008}},
}