DUPLEXED CONTROL SYSTEM AND CONTROL METHOD THEREOF

摘要

A duplexed control system comprises: two control devices, whereof one is set to operate as a reserve system and the other is set to operate as a regular system; a tracking bus that connects the two control devices to enable these to exchange tracking signals; and a control transmission channel that transmits computational information of these two control devices; wherein: the control devices respectively have: an own-system state evaluation section that transmits the result of state evaluation of its own system as a tracking signal through the tracking bus to the other system; an other-system signal confirmation section that receives the tracking signal through the tracking bus from the control device of the other system and thus performs state confirmation; and a transmission channel changeover section that, if the tracking signal cannot be received through the tracking bus, effects transmission of the tracking signal to the other-system signal confirmation section of the other system, through the control transmission channel.

主权项

1. A duplexed control system comprising:
two control devices, whereof one is set to operate as a reserve system and the other is set to operate as a regular system; a tracking bus that connects said two control devices and that is capable of exchanging tracking signals between said two control devices; and a control transmission channel connected with said two control devices, that transmits computational information of said two control devices, wherein said two control devices respectively include: an own-system state evaluation section that performs state evaluation of its own system and that transmits a result of said state evaluation as a tracking signal through said tracking bus to said control device of the other system; an other-system signal confirmation section that receives said tracking signal through said tracking bus from said control device of said other system and thus performs state confirmation of said control device of said other system; and a transmission channel changeover section that, if said tracking signal cannot be received by said other-system signal confirmation section through said tracking bus, causes said own-system state evaluation section to transmit said tracking signal to said other-system signal confirmation section of said other system, through said control transmission channel.