RELIABLE FAULT-SECURE PROCESSOR FOR SPACE-FLIGHT CONTROLLERS | ||||
| International Conference on Aerospace Sciences and Aviation Technology | ||||
| Article 40, Volume 2, A.S.A.T. CONFERENCE 21-23 April 1987 , CAIRO, April 1987, Page 999-1009 PDF (2.06 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/asat.1987.26197 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| M. EL-Lithy | ||||
| Dr., Lecturer, Dept. of Guidance, Military Technical College, Cairo, Egypt. | ||||
| Abstract | ||||
| Reliability, availability are extremely important aspects of the overall performance of a digital controller. The safety, in addition, becomes a vital aspect for the space flight applications. In otherwords, a space-flight controller ought to be fault-secure. The present paper presents an architecture, fault-secure and self-checking for a processor which is mainly intended for space-flight controllers. The fault-secureness of a processor means that it never produces an incorrect output due to a fault unless it simultaneously announces the occurrence of that fault. Different techniques of concurrent fault-detection are applied and self-checking circuits are used, which result in minimizing the mean-time-to-detection (MTTD). The error-indication signals aid the system fault-diagnosis which reduces to minimum the repair time. Thus, the system maintainability and availability are well improved. | ||||
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