RELIABILITY IMPROVEMENT BY REDUNDANCY IN ELECTRONIC SYSTEMS Ⅱ AND EFFICIENT NEW REDUNDANCY SCHEME-RADIAL LOGIC

摘要

This Report describes an efficient new redundancy scheme called radial logic, which is suitable for binary logic circuitry. Rules for applying radial logic are given, together with rules for achieving satisfactory interfaces with subsystems which are irredundant or have another form of redundancy. The mechanism of error correction in radial logic is analyzed, and a general expression for the reliability improvement it produces is derived. Methods of testing redundant systems are also discussed.nRadial, logic is shown to be very efficient in terms of the reliability improvement produced for the amount of redundancy used. The degree of error correction achieved is flexible, the scheme is relatively simple to apply, and standard circuits can be used.