Method and apparatus to provide control redundancy in process plants
    11.
    发明公开
    Method and apparatus to provide control redundancy in process plants 有权
    在过程工厂中提供控制冗余的方法和设备

    公开(公告)号:EP2793094A1

    公开(公告)日:2014-10-22

    申请号:EP14177231.9

    申请日:2008-09-16

    IPC分类号: G05B19/418

    摘要: A method to provide control redundancy for a process plant control system, the method comprising and providing a control input to a first instance of control software sub-system and to a second instance of the control software sub-system and to at least a third instance of the control software sub-system, wherein the instances process the control input in parallel, and wherein the number of instances is dynamic, depending on the current processing loads of available controllers; and providing the output of one of the instances to a process plant field device, wherein said first instance of control software sub-system is a master that collects the outputs of the instances; and performs voting among the instances to select the output to be communicated to the process plant field device.

    摘要翻译: 一种为过程工厂控制系统提供控制冗余的方法,所述方法包括并且向控制软件子系统的第一实例和控制软件子系统的第二实例提供控制输入,并且提供控制输入给至少第三实例 其中所述实例并行地处理所述控制输入,并且其中取决于可用控制器的当前处理负载,所述实例的数量是动态的; 以及将所述实例之一的输出提供给过程工厂现场设备,其中所述控制软件子系统的第一实例是收集所述实例的输出的主设备; 并且在实例之间执行投票以选择要传送给过程工厂现场设备的输出。