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    • 14. 发明授权
    • System and method for periodic task resumption following redundant control system switchover
    • 冗余控制系统切换后的周期性任务恢复系统和方法
    • US06760634B2
    • 2004-07-06
    • US09761986
    • 2001-01-17
    • William CookMark Flood
    • William CookMark Flood
    • G05B902
    • G05B9/03G05B19/048G05B2219/14014
    • A method and apparatus are disclosed for performing timely execution of periodic tasks in a redundant control system. A secondary controller in the redundant system receives a wakeup time array having at least one wakeup time element corresponding to a periodic task as well as a current time value from a primary controller, and schedules a run time for the periodic task at switchover based on the wakeup time element and the current time value from the primary control module. The secondary controller may further receive a task instance corresponding to the periodic task from the primary control module, and schedule a run time for the periodic task at switchover based on the task instance. In addition, the secondary controller may schedule a run time for the periodic task at switchover based on a default period associated with the periodic task, if no task instance and no wakeup time element were received corresponding to the periodic task.
    • 公开了用于在冗余控制系统中及时执行周期性任务的方法和装置。 冗余系统中的辅助控制器接收具有与周期性任务对应的至少一个唤醒时间元素以及来自主控制器的当前时间值的唤醒时间阵列,并且基于所述主控制器在切换时调度周期性任务的运行时间 唤醒时间元素和主控制模块的当前时间值。 辅助控制器还可以从主控制模块进一步接收对应于周期性任务的任务实例,并且基于任务实例在切换时调度周期性任务的运行时间。 此外,如果没有接收到与周期性任务对应的任务实例和没有唤醒时间元素,则辅助控制器可以基于与周期性任务相关联的默认周期来安排切换周期性任务的运行时间。