| 摘要 |
PROBLEM TO BE SOLVED: To provide a redundant system capable of quickly switching controllers and a redundancy method.SOLUTION: A redundant system (1000) includes: a normal operation controller (1100) that performs computation processing in relation to control of a control object; a backup controller (1200) that performs computation processing equivalent to the computation processing by the normal operation controller in parallel to the computation processing by the normal operation controller; and a shared memory (1300) as a storage device shared by the normal operation controller and the backup controller. When it is not possible to identify the existence of the normal operation controller, the backup controller makes the shared memory output computation results stored by the backup controller among computation results stored in the shared memory. |
