TY - GEN
T1 - Control reconfiguration in the presence of software failures
AU - Bodson, M.
AU - Lehoczky, J.
AU - Rajkumar, R.
AU - Sha, L.
AU - Soh, D.
AU - Smith, M.
AU - Stephan, J.
PY - 1993
Y1 - 1993
N2 - In this paper, we discuss a special approach for software fault tolerance in control applications. A full-function, high-performance, but complex control system is complemented by an error-free implementation of a highly reliable control system of lower functionality. When the correctness of the high-performance controller is in doubt, the reliable control system takes over the execution of the task. An innovative feature of the approach is the disparity between the two control systems, which is used to exploit the relative advantages of the simple/reliable vs. complex/ high-performance systems. Another innovative feature is the fault detection mechanism, which is based on measures of performance and of safety of the control system. The example of a ball and beam system is used to illustrate the concepts, and experimental results obtained on a laboratory set-up are presented.
AB - In this paper, we discuss a special approach for software fault tolerance in control applications. A full-function, high-performance, but complex control system is complemented by an error-free implementation of a highly reliable control system of lower functionality. When the correctness of the high-performance controller is in doubt, the reliable control system takes over the execution of the task. An innovative feature of the approach is the disparity between the two control systems, which is used to exploit the relative advantages of the simple/reliable vs. complex/ high-performance systems. Another innovative feature is the fault detection mechanism, which is based on measures of performance and of safety of the control system. The example of a ball and beam system is used to illustrate the concepts, and experimental results obtained on a laboratory set-up are presented.
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M3 - Conference contribution
AN - SCOPUS:0027747990
SN - 0780312988
T3 - Proceedings of the IEEE Conference on Decision and Control
SP - 2284
EP - 2289
BT - Proceedings of the IEEE Conference on Decision and Control
A2 - Anon, null
PB - Publ by IEEE
T2 - Proceedings of the 32nd IEEE Conference on Decision and Control. Part 3 (of 4)
Y2 - 15 December 1993 through 17 December 1993
ER -