Title :
On the effect of transient data-errors in controller implementations
Author :
Gafvert, Magnus ; Wittenmark, Bjorn ; Askerdal, Orjan
Author_Institution :
Dept. of Autom. Control, Lund Inst. of Technol., Sweden
Abstract :
Computer-level faults leading to data errors in computations are predicted to occur increasingly frequent in future microprocessors. This work discusses the impact of such errors on closed-loop performance in implementations of digital control system. A method to render a control system more robust to data errors by introducing artificial signal limits and then combine them with an anti-windup scheme is presented and exemplified.
Keywords :
closed loop systems; control system synthesis; digital control; discrete time systems; fault location; logic testing; microprocessor chips; antiwindup scheme; artificial signal limit; closed-loop performance; computer-level faults leading; controller implementation; digital control system; future microprocessor; transient data-error effect; Automatic control; Circuit faults; Combinational circuits; Computer errors; Control systems; Error correction; Hardware; Latches; Microprocessors; Protection;
Conference_Titel :
American Control Conference, 2003. Proceedings of the 2003
Print_ISBN :
0-7803-7896-2
DOI :
10.1109/ACC.2003.1244059
