Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Analyzing the Impact of Data Errors in Safety-Critical Control Systems
AU - Askerdal, Ö.
AU - Gäfvert, M.
AU - Hiller, M.
AU - Suri, Neeraj
PY - 2003
Y1 - 2003
N2 - Computers are increasingly used for implementing control algorithms in safety-critical embedded applications, such as engine control, braking control and flight surface control. Consequently, computer errors can have severe impact on the safety of such systems. Addressing the coupling of control performance with computer related errors, this paper develops a methodology for analyzing the impacts data errors have on control system dependability. The impact of a data error is measured as the resulting control error. We use maximum bounds on this measure as the criterion for control system failure (i.e., if the control error exceeds a certain threshold, the system has failed). In this paper we a) develop suitable models of computer faults for analysis of control level effects and related analysis methods, and b) apply traditional control theory analysis methods for understanding the impacts of data errors on system dependability. An automobile slip-control brake-system is used as an example showing the viability of our approach.
AB - Computers are increasingly used for implementing control algorithms in safety-critical embedded applications, such as engine control, braking control and flight surface control. Consequently, computer errors can have severe impact on the safety of such systems. Addressing the coupling of control performance with computer related errors, this paper develops a methodology for analyzing the impacts data errors have on control system dependability. The impact of a data error is measured as the resulting control error. We use maximum bounds on this measure as the criterion for control system failure (i.e., if the control error exceeds a certain threshold, the system has failed). In this paper we a) develop suitable models of computer faults for analysis of control level effects and related analysis methods, and b) apply traditional control theory analysis methods for understanding the impacts of data errors on system dependability. An automobile slip-control brake-system is used as an example showing the viability of our approach.
KW - Control systems
KW - Error analysis
KW - Error modeling
KW - Safety-critical systems
KW - Algorithms
KW - Computer hardware
KW - Computer simulation
KW - Control theory
KW - Database systems
KW - Embedded systems
KW - Encoding (symbols)
KW - Mathematical models
KW - Microprocessor chips
KW - Telecommunication networks
KW - Braking control
KW - Distributed parameter control systems
M3 - Journal article
VL - E86-D
SP - 2623
EP - 2633
JO - IEICE Transactions on Information and Systems
JF - IEICE Transactions on Information and Systems
SN - 0916-8532
IS - 12
ER -