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DCS在控制上的大特点是依靠各种控制、运算模块的灵活组态，可实现多样化的控制策略以满足不同情况下的需要，使得在单元组合仪表实现起来相当繁琐与复杂的命题变得简单。随着企业提出的高柔性、益的要求，以经典控制理论为基础的控制方案已经不能适应，以多变量预测控制为代表的控制策略的提出和成功应用之后，过程控制受到了过程工业界的普遍关注。需要强调的是，广泛应用各种控制与优化技术是挖掘并提升DCS综合性能有效、直接、也是具价值的发展方向。

在实际过程控制系统中，基于PID控制技术的系统占80%以上，PID回路运用优劣在实现装置平稳、、运行中起到举足轻重的作用，各DCS厂商都以此作为抢占市场的有力竞争砝码，开发出各自的PID自整定软件。另外，根据DCS的控制功能，在基本的PID算法基础上，可以开发各种改进算法，以满足实际工业控制现场的各种需要，诸如带死区的PID控制、积分分离的PID控制、微分先行的PID控制、不完全微分的PID控制、具有逻辑选择功能的PID控制等等

ABB ACH550-PDR-031A-4 AC DRIVE

ABB ACH550-PDR-031A-4+B058 AC DRIVE

ABB ACH550-UH-011A-6

ABB ACH550-UH-017A-6

ABB ACH550-UH-045A-4 AC DRIVE

ABB ACH550-UH-059A-4 AC DRIVE

ABB ACH550-VC-08A8-4 AC DIVE

ABB ACH550-VCR-08A8-4 HVAC DRIVE

ABB ACN6340020600000000902

ABB ACS350-03U-08A8-4+J402-J404 POTENTIOMETER

ABB ACS350-03U-23A1-4 AC DRIVE ADVANCED PANEL 480VAC

ABB ACS355-03U-15A6-4 VARIABLE FREQUENCY DRIVE *FACTORY SEALED*

ABB ACS501-004-3-00P200000

ABB ACS550-U1-012A-2 DRIVE

ABB ACS550-U1-012A-2 W/ ACS-CP-A DRIVE

ABB ACS550-U1-015A-4 DRIVE 10 HP

ABB ACS550-U1-023A-4+B055 DRIVE

ABB ACS550-U1-023A-4+L512

ABB ACS550-U1-038A-4

ABB ACS550-U1-072A-4+B055 DRIVE

ABB ACS550-U1-125A-4 INVERTER DRIVE

ABB ACS600 AC VARIABLE DRIVE ACS601-0006-4-000B150080

ABB ACS60100095000B1200000

ABB ACS60100095000B1200000 NO KEYPAD

ABB ACS60100096000B1200901

ABB ACS601-0011-5-000B1200000

ABB ACS601-0016-5-000B1200800

ABB ACS601-0020-5-000B1200000

ABB ACS60100206000B1200901 DRIVE

ABB ACS601-0060-5-000B1200000

ABB ACS60101205000B1200000

ABB ACS800-04-0490-5 MODULE *REFURB*

ABB ACS800-U1-0016-5+P901 DRIVE

ABB AF260N5-3011-70 CONTACTOR

ABB AI86-8CH TERMINAL BLOCK BOARD

ABB AIO86-8/4 ANALOG BOARD

ABB ANALOG INPUT MODULE IMASI23

ABB AO610 ANALOG OUTPUT

ABB API ELMO 3 HAC 2206 SERVO MOTOR PS 90/6-90-P-LSS-4609

ABB ASEA BROWN BOVERI 6632003A1 PC ANALOG CONTROL RACK 12SLOT

ABB ASEA DSCA-114* ASYNCHRONOUS COMMUNICATION BOARD 57510001-AA/5

ABB ASEA DSCL-110A REDUNDANCY CONTROL UNIT 57310001-KY/5 *NEW IN BAG*

ABB AUTOMATION 6152NB10700B POWER SIPPLY DISTRIBUTION MODULE

ABB AUTOMATION 6163NZ10700B POWER SIPPLY DISTRIBUTION MODULE

ABB AV3321010 POSITIONER

ABB BAILEY IMDSM04 PULSE INPUT SLAVE MODULE

ABB BIAC-1000

ABB BIAC-1000-570-03400

ABB BOARD IOP-05

ABB CBV SUPERVISION BOARD SAFT-132-CBS

ABB CHOPPER CONTROL CARD SAFT-125-CHC

ABB CI626A

ABB CI670* 3K ANALOG MIXED MODULE 3BHT300017R1/4

ABB COMMANDER 1900 1911RA001400000STD CHART RECORDER/PROCESSOR

ABB COMMUNICATION UNIT YPK113A

ABB CONTACTOR AF460-30

ABB CONTACTOR EH175C-4

ABB CONTROL BOARD 2.408.140.21

ABB CONTROL DISTRIBUTION BOARD NXPP-03

ABB CONTROL UNIT NDCU-21A1 & A2

ABB CPU86-NDP PROCESSOR BOARD

ABB DCS800-S01-0045 DC DRIVE

ABB DDCS BRANCHING UNIT NDBU-95

ABB DI620 DIGITAL INPUT

ABB DI86-M8/8 DIGITAL INPUT BOARD

ABB DIGITAL I/O - HARMONY BLOCK I/O P-HB-DIO-40010000

ABB DO620

ABB DRIVE ACS401601132

ABB DRIVE ACS601-0009-6-000B1200901

ABB DSAI-130 ANALOG INPUT BOARD

ABB DSAI-133 INPUT CARD ANALOG

ABB DSAV-111 DRIVER MODULE BOARD 57350001-CN, DSAV 111

ABB DSBC-172* BUS REPEATER MODULE 57310001-KD/3, 2668 404-3/4

ABB DSCS-116* COMMUNICATION MODULE BOARD 57520001-BZ/5

ABB DSCS-131* COMMUNICATION MODULE MASTER FIELDBUS 57310001-LM/2

ABB DSDI-115 INPUT MODULE

ABB DSDO-115 OUTPUT MODULE

ABB DSMB-133* MEMORY MODULE 57360001-CY/1, ASEA 2668 180-524-1

ABB DSMB-144 MEMORY MODULE

ABB DSMB-151* MEMORY DISPLAY MODULE 57360001-K/10, 2668 182-125/1

ABB DSMC-112* DISK CONTROLLER BOARD 57360001-HC/3, 2668 182-106/4

ABB DSPC-155* CPU MEMORY MODULE 57310001-CX/5, 2668 184-238/2

ABB DSPC-170 CPU MODULE

ABB DSPC-171* EXCHANGE PROCESSOR UNIT 57310001-CC/8, 2668 182-120/1

ABB DSQC 321

ABB DSQC 326

ABB DSQC 335

ABB DSQC266K 3HAB8799-1/2

ABB DSQC328A 3HAC17970-1/05

ABB DSQC331 3HAB7215-1 PANEL UNIT

ABB DSTC 452 MODEM FIELDBUS 5751017-A

ABB DSTC 452 MODEM FIELDBUS 5751017-A DATE: 01/30/2004 *FACTORY SEALED*

ABB DSTC 452 MODEM FIELDBUS 5751017-A/2

ABB DSTD-110A OUTPUT CARD

ABB EFLG 630-2P CONTACTOR

ABB EH 210 120V

ABB EH2105-1D *NICE*

ABB EH270C-1 CONTACTOR

ABB EH700 CONTACTOR

ABB EH700C-111 CONTACTOR

ABB EHDB360C2P-*L CONTACTOR

ABB EHDB960 SK828086-AF

ABB FDC86-CONT PC DISK CONTROLLER

ABB FDCB6-UNIT1B

ABB FREQUENCY DRIVE ACS601-0006-4-S00B1200801

ABB GNT2009454R0001

ABB HARMONY BRIDGE CONTROLLER P-HC-BRC-30000000

ABB IEPAS02 SEAL DATE 11-29-10 POWER SUPPLY *SEALED*

ABB IIMCP02 PROCESSOR MODULE COMMUNICATION OIS MULTI-BUSS *REMAN*

ABB IIMKM02A PROCESSOR MODULE *REMAN*

ABB IIMLM01 PROCESSOR MODULE *REMAN*

ABB IMDS015 CIRCUIT BOARD SEAL DATE 10-20-09 *SEALED*

ABB IMDSI22 INPUT MODULE SEAL DATE 6-07-10 *SEALED*

ABB IMFEC11 SEAL DATE 2-19-10 INPUT MODULE *SEALED*

ABB IMMFP12 PROCESSOR

ABB INCORPORATED C1900/0720 CHART RECORDER KIT FOR KIT 1

ABB INCORPORATED C1900/0721 CHART RECORDER KIT

ABB INDUSTRY ACN6340605600000000902 *NEW OUT OF THE BOX*

ABB INNPM12 NETWORK PROCESS MODULE

ABB IPFLD24 I90 POWER SYSTEM MODULE 120V

ABB ISOLATION CONTACTOR EHW250WC-1L11

ABB KU2001 VARISTORBOARD

ABB MATCHING CARD NXPP-02

ABB MEM86-192K + 192KRM

ABB MEM86-3X192K MEMORY BOARD

ABB METER CONTROLLER E150374101004EH140111

ABB MJ-983

ABB NAMC-03 CPU CONTROL BOARD

ABB NDCU-11C INVERTER CONTROL UNIT

ABB NF1252-3PB6A ENCLOSED DISCONNECT SWITCH 3P SW 125A

ABB NGPS-02 REV. D POWER SUPPLY BOARD

ABB NINT-62 MAIN CIRCUIT BOARD *NICE*