Abstract
The main hardware failure types of computer systems are classified. The risks and the difficulties in the safety demonstration of different fail-safe computer systems are compared. Such computer systems are: Multi-computer with hard- or software comparator, with equal and diverse processing; single computer with checking program or with diverse multi-processing. The problems of computers with fail-safe circuits or with processing in coded form are discussed. A structure of the safety demonstration is recommended. In order to achieve a low probability of multiple failures a fast failure detection is necessary. In practise it is not possible to analyse the internal failures of a microprocessor in detail. An operational method of failure detection using a second processor and a function test program is outlined. Advantages and disadvantages of hardware diversity are discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
