Accession Number:

ADA175235

Title:

Mission Reliability Model Users Guide.

Descriptive Note:

Final rept. Mar 82-Mar 86,

Corporate Author:

ANALYTIC SCIENCES CORP READING MA

Personal Author(s):

Report Date:

1986-11-01

Pagination or Media Count:

144.0

Abstract:

The Mission Reliability Model MIREM has been developed to evaluate the reliability and sustained operating capability of advanced electronic circuits during the early stages of development. MIREM is applicable to integrated systems that achieve fault tolerance through dynamic fault detection, fault isolation, and reconfiguration. This program can also be valuable in evaluating designs that make use of hard wired or brute force redundancy. The most unique feature of MIREM is its ability to accurately reflect the impact of reconfigurable, competing functions on system reliability. The user defines the resources necessary to support a required function e.g., Identify FriendFoe, IFF, and the model will compute the probability of losing that functional capability over a certain operating time. A critical failure occurs when there are not a sufficient number of working resources to support a certain function. As an analytic model, MIREM determines a specific value for Mean Time Between Critical Failure, Mission Completion Success Probability, and Failure Resiliency. This report documents the latest enhancements added to MIREM. The model can now calculate the effects of undetected failures and false alarms upon system reliability. Mean Time Between Maintenance Action and Mean Time to Repair are two output statistics which have been added. Graphical outputs, now included with MIREM, illustrate repair options for circuits where reliability gracefully degrades over a period of time. Keywords Computer program documentation.

Subject Categories:

  • Computer Programming and Software
  • Manufacturing and Industrial Engineering and Control of Production Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE