woodward 9905-858
woodward 9905-858
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【品质超群厦门莫格电气自动化，咨询 手机 】
【工控专家厦门莫格电气自动化，咨询 】
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1.3 FCS
（1）FCS是第五代过程控制系统，它是21世纪自动化控制系统的方向。是3C技术（Communication，Computer，Control）的融合。基本任务是：本质（本征）安全、危险区域、易变过程、难于对付的非常环境。
（2）全数字化、智能、多功能取代模拟式单功能仪器、仪表、控制装置。
（3）用两根线联接分散的现场仪表、控制装置，取代每台仪表的两根线。“现场控制”取代“分散控制”；数据的传输采用“总线”方式。
（4）从控制室到现场设备的双向数字通信总线，是互联的、双向的、串行多节点、开放的数字通信系统取代单向的、单点、并行、封闭的模拟系统。
（5）用分散的虚拟控制站取代集中的控制站。
（6）把微机处理器转入现场自控设备，使设备具有数字计算和数字通信能力，信号传输精度高，远程传输。实现信号传输全数字化、控制功能分散、标准统一全开放。
（7）可上局域网，再可与internet相通。既是通信网络，又是控制网络。
（8）3类FCS的典型应用：1) 连续的工艺过程自动控制如石油化工，其中“本安防爆”技术是重要的；2）分立的工艺动作自动控制如汽车制造机器人、汽车；3）多点控制如楼宇自动化。
这三大控制系统，尤其是DCS、PLC，都在电站得到了广泛应用，而且效果也非常好。
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