在水煤浆气化装置中合成气管道温度降低会造成酸性气体冷凝,对管道内壁产生腐蚀甚至导致穿孔泄漏。为及时发现合成气管道漏损点并精确定位,研究基于分布式光纤测温系统(distributed temperature sensing,DTS)的合成气管道漏损检测与定...在水煤浆气化装置中合成气管道温度降低会造成酸性气体冷凝,对管道内壁产生腐蚀甚至导致穿孔泄漏。为及时发现合成气管道漏损点并精确定位,研究基于分布式光纤测温系统(distributed temperature sensing,DTS)的合成气管道漏损检测与定位。提出一种基于自适应方差阈值的DTS检测定位算法,首先运用层次聚类对检测到的信号进行识别,将漏损信号识别出来,然后将识别出的漏损信号经过方差处理、自适应阈值设定对漏损点位置进行定位,该算法能够对合成气管道漏损点进行定位。将该方法与固定阈值法和选择性平均阈值法进行比较,其定位精度分别提高了0.32 m和0.17 m。并在煤气化现场进行测温实验,对现场漏损点位置进行了精确定位。展开更多
Cement production is characterized by its great capacity, long-time delay, multi variables, difficult measurement and multi disturbances. According to the distributed intelligent control strategy based on the multi (a...Cement production is characterized by its great capacity, long-time delay, multi variables, difficult measurement and multi disturbances. According to the distributed intelligent control strategy based on the multi (agent,) the multi agent control system of cement production is built, which includes integrated optimal control and diagnosis control. The distributed and multiple level structure of multi agent system for the cement control is studied. The optimal agent is in the distributed state, which aims at the partial process of the cement production, and forms the optimal layer. The diagnosis agent located on the diagnosis layer is the diagnosis unit which aims at the whole process of the cement production, and the central management unit of the system. The system cooperation is realized by the communication among optimal agents and diagnosis agent. The architecture of the optimal agent and the diagnosis agent are designed. The detailed functions of the optimal agent and the diagnosis agent are analyzed. At last the realization methods of the agents are given, and the application of the multi agent control system is presented. The multi agent system has been successfully applied to the off-line control of one cement plant with capacity of 5 000 t/d. The results show that the average yield of the clinker increases 9.3% and the coal consumption decreases 7.5 kg/t.展开更多
文摘在水煤浆气化装置中合成气管道温度降低会造成酸性气体冷凝,对管道内壁产生腐蚀甚至导致穿孔泄漏。为及时发现合成气管道漏损点并精确定位,研究基于分布式光纤测温系统(distributed temperature sensing,DTS)的合成气管道漏损检测与定位。提出一种基于自适应方差阈值的DTS检测定位算法,首先运用层次聚类对检测到的信号进行识别,将漏损信号识别出来,然后将识别出的漏损信号经过方差处理、自适应阈值设定对漏损点位置进行定位,该算法能够对合成气管道漏损点进行定位。将该方法与固定阈值法和选择性平均阈值法进行比较,其定位精度分别提高了0.32 m和0.17 m。并在煤气化现场进行测温实验,对现场漏损点位置进行了精确定位。
文摘Cement production is characterized by its great capacity, long-time delay, multi variables, difficult measurement and multi disturbances. According to the distributed intelligent control strategy based on the multi (agent,) the multi agent control system of cement production is built, which includes integrated optimal control and diagnosis control. The distributed and multiple level structure of multi agent system for the cement control is studied. The optimal agent is in the distributed state, which aims at the partial process of the cement production, and forms the optimal layer. The diagnosis agent located on the diagnosis layer is the diagnosis unit which aims at the whole process of the cement production, and the central management unit of the system. The system cooperation is realized by the communication among optimal agents and diagnosis agent. The architecture of the optimal agent and the diagnosis agent are designed. The detailed functions of the optimal agent and the diagnosis agent are analyzed. At last the realization methods of the agents are given, and the application of the multi agent control system is presented. The multi agent system has been successfully applied to the off-line control of one cement plant with capacity of 5 000 t/d. The results show that the average yield of the clinker increases 9.3% and the coal consumption decreases 7.5 kg/t.
