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A Control Theory Approach for Analyzing the Effects of Data Errors in Safety-Critical Control Systems

Askerdal, Örjan; Gäfvert, Magnus LU ; Hiller, Martin and Suri, Neeraj (2002) In Pacific Rim International Symposium on Dependable Computing, 2002. Proceedings. 2002 p.105-114
Abstract
Computers are increasingly used for implementing controlalgorithms in safety-critical embedded applications, such asengine control, braking control and flight surfacecontrol. Addressing the consequent coupling of control performancewith computer related errors, this paper develops a composite computerdependability/control theory methodology for analyzing the effectsdata errors have on control system dependability. The effect is measured as theresulting control error (defined as the difference between the desired value ofa physical property andits actual value). We use maximum bounds on this measure as the criterion forcontrol system failure (i.e., if the control error exceeds a certain threshold,the system has failed).In this paper we a)... (More)
Computers are increasingly used for implementing controlalgorithms in safety-critical embedded applications, such asengine control, braking control and flight surfacecontrol. Addressing the consequent coupling of control performancewith computer related errors, this paper develops a composite computerdependability/control theory methodology for analyzing the effectsdata errors have on control system dependability. The effect is measured as theresulting control error (defined as the difference between the desired value ofa physical property andits actual value). We use maximum bounds on this measure as the criterion forcontrol system failure (i.e., if the control error exceeds a certain threshold,the system has failed).In this paper we a) present suitable models of computer faults for analysis of control level effects andrelated analysis methods, and b) apply traditional control theoryanalysis methods for understanding the effects of data errors onsystem dependability. An automobile slip-control brake-system is used as an example showing the viability of our approach. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
control performance, control system dependability, control system failure, control theory approach, safety-critical embedded applications, system dependability, flight surface control, safety-critical control systems, engine control, automobile slip-control brake-system, braking control, control level effects, computer faults, computer related errors, composite computer dependability/control theory methodology, data errors
in
Pacific Rim International Symposium on Dependable Computing, 2002. Proceedings. 2002
pages
105 - 114
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • Scopus:0344362761
ISBN
0-7695-1852-4
DOI
10.1109/PRDC.2002.1185625
language
English
LU publication?
yes
id
44c43290-559c-445a-b1d9-07399e3cd3ff (old id 537702)
date added to LUP
2007-09-12 16:14:07
date last changed
2016-10-13 04:38:28
@misc{44c43290-559c-445a-b1d9-07399e3cd3ff,
  abstract     = {Computers are increasingly used for implementing controlalgorithms in safety-critical embedded applications, such asengine control, braking control and flight surfacecontrol. Addressing the consequent coupling of control performancewith computer related errors, this paper develops a composite computerdependability/control theory methodology for analyzing the effectsdata errors have on control system dependability. The effect is measured as theresulting control error (defined as the difference between the desired value ofa physical property andits actual value). We use maximum bounds on this measure as the criterion forcontrol system failure (i.e., if the control error exceeds a certain threshold,the system has failed).In this paper we a) present suitable models of computer faults for analysis of control level effects andrelated analysis methods, and b) apply traditional control theoryanalysis methods for understanding the effects of data errors onsystem dependability. An automobile slip-control brake-system is used as an example showing the viability of our approach.},
  author       = {Askerdal, Örjan and Gäfvert, Magnus and Hiller, Martin and Suri, Neeraj},
  isbn         = {0-7695-1852-4},
  keyword      = {control performance,control system dependability,control system failure,control theory approach,safety-critical embedded applications,system dependability,flight surface control,safety-critical control systems,engine control,automobile slip-control brake-system,braking control,control level effects,computer faults,computer related errors,composite computer dependability/control theory methodology,data errors},
  language     = {eng},
  pages        = {105--114},
  publisher    = {ARRAY(0x9b2ec58)},
  series       = {Pacific Rim International Symposium on Dependable Computing, 2002. Proceedings. 2002},
  title        = {A Control Theory Approach for Analyzing the Effects of Data Errors in Safety-Critical Control Systems},
  url          = {http://dx.doi.org/10.1109/PRDC.2002.1185625},
  year         = {2002},
}