零星任务调度在多控制任务系统中的应用  

Application of Sporadic Task Scheduling to Multi-Control-Task System

作　　者：张晓云[1] 岳继光[1] 杨麟祥[1] 

机构地区：[1]同济大学电子与信息工程学院,上海200092

出　　处：《控制工程》2005年第S2期24-26,共3页Control Engineering of China

摘　　要：为了在单处理器上实现可靠的实时多任务控制,引入任务调度思想。以油温控制系统为例,应用PID-模糊复合控制器,讨论在单处理器上实现多个油温控制器时,由于算法切换,会引起处理器“过载”,因此在μC/OS-Ⅱ实时嵌入式操作系统平台上,应用基于服务器的零星任务调度策略。实验证明,此方法能够有效地调度各个实时控制任务,保证它们满足各自的截止期限,获得了较好的控制效果。In order to ensure successful real-time control tasks for a single processor, task scheduling method is adopted, which is a new research area that has emerged. Taking the oil temperature control system for example, the execution time of the designed PID-Fuzzy controller may change abruptly between different modes, and the processor may be overloaded. Therefore using a periodic server to deal with sporadic task based on μC/OS-Ⅱ is necessary, it can schedule all real-time tasks effectively. Experiments show it is feasible and good control performance is achieved.

关 键 词：复合控制器 实时多任务 零星任务调度 μC/OS-Ⅱ 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]