Corrective Control of Asynchronous Sequential Circuits with Faults from Total Ionizing Dose Effects in Space

총이온화선량에 의한 고장이 존재하는 비동기 순차 회로의 교정 제어

  • 양정민 (대구가톨릭대학교 전자공학과) ;
  • 곽성우 (계명대학교 전자공학과)
  • Received : 2011.08.20
  • Accepted : 2011.09.25
  • Published : 2011.11.01


This paper presents a control theoretic approach to realizing fault tolerance in asynchronous sequential circuits. The considered asynchronous circuit is assumed to work in space environment and is subject to faults caused by total ionizing dose (TID) effects. In our setting, TID effects cause permanent changes in state transition characteristics of the asynchronous circuit. Under a certain condition of reachability redundancy, it is possible to design a corrective controller so that the closed-loop system can maintain the normal behavior despite occurrences of TID faults. As a case study, the proposed control scheme is applied to an asynchronous arbiter implemented in FPGA.


Supported by : 한국연구재단


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