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  Controller Action °ü·Ã Áú¹®
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Controller action °ü·Ã ±Ã±ÝÇÑ Á¡ÀÌ »ý°Ü Áú¹®µå¸³´Ï´Ù.
Controller action¿¡  Direct/Reverse À» ±âÀÔÇØ¾ß Çϴµ¥¿ä, óÀ½¿£ ´Ü¼øÈ÷ process variableÀÌ Áõ°¡ÇßÀ»¶§ valve opening ÀÌ Áõ°¡Çϸé Direct, °¨¼ÒÇϸé Reverse¶ó°í »ý°¢Çß½À´Ï´Ù. ÇÏÁö¸¸ ÀÌ¿Í °ü·ÃÇÏ¿© °øºÎ¸¦ ÇÏ´Ùº¸´Ï Valve TypeÀÌ Air to open(FC), Air to close(FO)¿¡ µû¶ó controller action ´Ù½Ã ´Þ¶óÁú ¼ö ÀÖ´Ù´Â »ý°¢ÀÌ µé¾ú½À´Ï´Ù.
 
¿¹¸¦ µé¸é, Tank·Î µé¾î°¡´Â Steam¾çÀ» controlÇÏ´Â control valve°¡ Air to Close(FO)ŸÀÔÀ϶§(°¡Á¤), TankÀÇ temperature »ó½Â½Ã, (process variable-set point)´Â Áõ°¡ÇÏ°Ô µË´Ï´Ù. ÄÁÆ®·Ñ Ãø¸é¿¡¼­ ¿Âµµ°¡ setpointº¸´Ù Áõ°¡½Ã ÄÁÆ®·Ñ¹ëºê openingÀ» ÁÙ¿© steam ¾çÀ» ÁÙ¿©¾ß µË´Ï´Ù. ATCÀÇ °æ¿ì controllerÀÇ output signal(+)ÀÇ Áõ°¡¿¡ ÀÇÇÑ air pressure´Â valve¸¦ closeÇÏ´Â ÂÊÀ¸·Î À¯µµÇÕ´Ï´Ù. µû¶ó¼­ (process variable-set point)>0ÀÇ °ªÀ» ¹ÞÀº controller°¡ ±×´ë·Î ¾çÀÇ output signalÀ» ³»º¸³»¾î¼­ valve¸¦ closeÇÏ´Â ÂÊÀ̸é ÀÌ control actionÀº "Direct"¶ó°í »ý°¢ µË´Ï´Ù.
 
Á¦°¡ ÀÌÇØÇÑ ¹Ù´Â À§¿Í °°Àºµ¥ Ȥ½Ã À߸øµÈ Á¡À̳ª ¿À·ù°¡ ÀÖÀ¸¸é ¾Ë·ÁÁÖ½Ã¸é °¨»çÇÏ°Ú½À´Ï´Ù.

éÌÜó yongbong   15-07-10 10:43
¿ì¼± Controller ActionÀº Process Variable°ú Controller Output°úÀÇ °ü°èÀÌÁö, Valve OpeningÀº Á÷Á¢ÀûÀ¸·Î °ü·ÃÀÌ ¾ø½À´Ï´Ù.

µÑ°·Î ¿¹Àü¿¡´Â Controller ActionÀ» Á¤ÇÒ¶§ FOÀ̳Ä, FCÀ̳ĸ¦ µûÁ®¼­ °í·ÁÇßÁö¸¸, ¿äÁòÀº FO valveÀÇ °æ¿ì Manual Control½Ã¿¡ OperatorÀÇ È¥µ¿À» ¹æÁöÇϱâ À§ÇØ (Á÷°ü¿¡ ¸Âµµ·Ï) DCS output option (DCS Vendor¸¶´Ù ¿ë¾î´Â ´Ù¸¦ ¼ö ÀÖÀ¸³ª) ¿¡¼­ SignalÀ» Çѹø µÚÁý¾î ÁÝ´Ï´Ù. µû¶ó¼­ Valve·Î °¡´Â SignalÀÌ Áõ°¡Çϸé Valve°¡ ¿­¸®´Â ¹æÇâÀÌ µÇµµ·Ï ÇØ ÁÝ´Ï´Ù.
Áï, FO valve¿Í FC valve¸¦ ³ª´©¾î¼­ »ý°¢ÇÒ ÇÊ¿ä°¡ ¾ø´Â °ÍÀÌÁö¿ä.

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