5. Examples of solutions

5.1 Fault tolerance mechanisms

• Defensive programming techniques provide designers with special techniques that enable programmed systems to be reactive in the event of failure. These techniques can be used in FMEAs as safety barriers to prevent certain component failure modes from producing the feared system events.

  The techniques most often used at the design level are the so-called N-version programming or overlay block techniques.

• The principle of N-version programming (figure...