Data synchronization in a cooperative distributed control system
US9310793B2 · kind B2 · utility
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Key dates
| Filing date | Mar 13, 2012 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Jul 20, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/2642
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A data synchronization method and apparatus are provided for a distributed control system where multiple controllers can control a plurality of actuators or sensors. The actuators or sensors are assigned to logical groups that share a common state. One of the actuators or sensors within a logical group serves as a reference device for a state variable. Before taking a control action, the controllers read the current value of the state variable from the reference device. Data synchronization is maintained by one or more refresh master controllers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.