描述
powerone 3D53-18-1
二位控制
這是最簡單的反饋控制，有時(shí)也叫開關(guān)控制。這種控制是當(dāng)被測量達(dá)到最高值或最低值的時(shí)候，就給出一個(gè)開關(guān)的信號。雖然被測量可能是模擬量，但控制輸出是開關(guān)的，所以叫兩位控制。在工業(yè)現(xiàn)場，有許多溫控器和液位開關(guān)控制是采用這種方式的。
比例控制
控制器的輸出值與被控參數(shù)的測量值和設(shè)定值或某個(gè)參考點(diǎn)的偏差是一個(gè)比例關(guān)系。比例控制比二位控制要平滑一些，消除了二位控制時(shí)會產(chǎn)生的被控量上下振蕩的情形。比如，對一個(gè)反應(yīng)罐的液位，如果設(shè)定的液位值是2700毫米，當(dāng)液位降低時(shí)，進(jìn)料管道上的閥門就要增加開度，而液位偏高時(shí)，則要將開度減小。增加和減小的比例與液位和設(shè)定值的偏差大小成比例關(guān)系。
積分控制
在積分控制中，被控變量的值的變化與控制系統(tǒng)輸出控制到實(shí)際生效的時(shí)間有一個(gè)預(yù)先設(shè)定的關(guān)系。執(zhí)行機(jī)構(gòu)的輸出是漸漸地達(dá)到設(shè)定的值的。這種控制方式的產(chǎn)生是由于實(shí)際的控制元件和執(zhí)行機(jī)構(gòu)從給出輸出信號到使被控變量達(dá)到設(shè)定值往往需要一段時(shí)間。
最常見的例子是溫度控制，比如，假定我們知道到煤氣閥門的開度到60%的時(shí)候，熱水器的水溫能夠達(dá)到適宜洗澡的45度，但是，當(dāng)你把閥門一下子擰到60%的位置時(shí)，水依然是涼的，你必須等一下，水溫升到45度左右的時(shí)候，就會穩(wěn)定。如果控制系統(tǒng)不用積分控制，而只用比例控制，那么當(dāng)閥門輸出為60%時(shí)，這是輸入的溫度值可能依然只有20度，那么按照比例控制，既然偏差依然存在，則閥門的開度會繼續(xù)加大，這樣，當(dāng)水溫升到45度時(shí)，閥門的開度可能會達(dá)到了90%甚至更高，這時(shí)，雖然控制系統(tǒng)會通知閥門保持不動(dòng)，但水溫會繼續(xù)升高，可能到了50甚至60度，這時(shí)，閥門的開度會減小，但在減小到60%之前，水溫都會繼續(xù)上升，當(dāng)閥門開度減到60%時(shí)，水溫依然可能70度，一直當(dāng)閥門的開度變成20%時(shí)，水溫才會變成45度，這時(shí)閥門運(yùn)動(dòng)會停止，但水溫卻會繼續(xù)下降，直到變成涼水，如果這時(shí)是冬天，可能你的情形還要糟糕。這就是沒有積分控制的溫度控制器會發(fā)生的情況。如果你有小孩，當(dāng)孩子第一次操作熱水器的閥門的時(shí)候，發(fā)生的情形就很像這種情況。
微分控制
微分控制通常與比例和積分控制同時(shí)使用，由于積分控制有一個(gè)滯后，微分控制可以讓控制對偏差的反應(yīng)提前，以免控制系統(tǒng)的反應(yīng)過于遲鈍。微分控制與比例和積分控制同時(shí)使用，可以使被控狀態(tài)更迅速地達(dá)到穩(wěn)定狀態(tài)，而又不會出現(xiàn)上文出現(xiàn)的振蕩現(xiàn)象。
PID 控制
在實(shí)際的控制系統(tǒng)中，根據(jù)實(shí)際變量的情況，上述三種控制方式有時(shí)只有一種，有時(shí)是兩種，有時(shí)三種同時(shí)采用。比例控制用P表示，積分控制用I表示，微分控制用D表示，根據(jù)采用的方式，分別稱為P控制，PI控制，PID控制。其中，PID控制是控制系統(tǒng)最常見的控制模式。
產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價(jià)格，大量現(xiàn)貨。
主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家
AC LINE FILTER, TRI-MAG.Inc. SF-1579 – REFURBISHED
CONTROLLER NOVELLUS 270019800 – REFURBISHED
CONTROLLER NOVELLUS 27017400 – REFURBISHED
HV GATE VALVE VAT DN100 PNEUMATIC SERIES 14
POWER SUPPLY ASTEC LPS 252 – REFURBISHED
PRINTED CIRCUIT BOARD, AMAT 0100-09099 – REFURBISHED
PRINTED CIRCUIT BOARD, AMAT 0100-35180 – REFURBISHED
PRINTED CIRCUIT BOARD, AMAT 0100-76258 REV. B
TRANSDUCER VIATRAN 376 – NEW
VACUUM VALVE, MKS 253B-2-50-2, Exhaust throtte valve
VACUUM VALVE, MKS, Exhaust throtte valve, KF50
VACUUM GAUGE CONTROLLER GRANVILLE-PHILL?IPS 375
STYLET FASTPOINT FX-439 DELUXE 707-439-00-02
SET OF 3 VIEWPORTS 716-011533-001 – NEW
PRINTED CIRCUIT BOARD APPLIED MATERIALS 0100-0953 REV.C
POWER SUPPLY APPLIED MATERIALS 0010-09181
FILTER ENTEGRIS WGFG01RH2 WAFERGARD – NEW
CONTROLLER MINARIK RG310UA – REFURBISHED
AIR BLOWER ASML 4022.436.2563 3D – REFURBISHED
Osaka Vacuum TG370M Turbopump / Pompe turbo UNTESTED
INVERTER APC UPS MATRIX 3000 – REFURBISHED
TRACOPOWER TSL240-124 POWER SUPPLY – TESTED
FILTER PENTEK WATER 145722 SET OF 4 – NEW
FLOWMETER DWYER INSTRUMENTS VFA-25-SSV – REFURBISHED
FLOWMETER DWYER INSTRUMENTS VFC-131 – REFURBISHED
LAMP DRIVER PHASETRONICS P1038A – REFURBISHED
SENSOR OMRON Z4W-V25R – REFURBISHED
TURBOMOLECULAR PUMP ALCATEL ATP 150 – NEW
VACUUM MANOMETER MKS 122BA-00100EB ( 100 TORR )
VACUUM MANOMETER TYLAN CMLB-21 (100 Torr) – REFURBISHED
CONVECTRON PIRANI VAC GAUGE GRANV-PHILLIPS 275 SET OF 3
CONTROLLER MKS 652D-BB – REFURBISHED
CONTROLLER MILLIPORE AC2 VALVE CONTROLLER – REFURBISHED
PUMPING SYSTEM LEYBOLD WA501 / D65BC – REFURBISHED
HV GATE VALVE VAT P/N:14036-PE44 – NEW
KSA400P KYOSAN POWER SUPPLY PN 97060572A01- REFURBISHED
UTI, ASSY Console QualiTorr Remote QTRT P/N: 05801
UTI QualiTorr Remote, Vac System Controller, 05506-2000
ALCATEL MANOMETER CN111 85407 – REFURBISHED
ELECTRONIC BOARD – TESTED
PRECISION BALL SCREW W1205KA-3P-C5Z P/N:07H9-0014 – NEW
LEYBOLD RUVAC WS501 PFPE US ROOTS VACUUM PUMP -PN 91737
PROCESS-KIT AMAT DCVD-LH 6″ TEOS – REFURBISHED
SET OF 2: SPACER, ARDEL, C&D PH2 – NEW
SUSC ASSY T2 WELDED, 150M – NEW
SWITCH ASSY. OZONATOR 42 PSI – NEW
GAS RING SMALL HOLES&CHANNELS – NEW
SHIELD 0200-09121 – REFURBISHED
POWER SUPPLY SVG 88 – REFURBISHED
HOST COMPUTER INTERFACE UNIT SVG – REFURBISHED
ROBOT SVG 88 ROBOT ARM – REFURBISHED
SVG 8836 HOT PLATE – REFURBISHED
PERF. PLATE 150MM BW, AMAT 0020-30406 – NEW
RF GENERATOR ENI OEM-25A – REFURBISHED
SVG CHILL PLATE – REFURBISHED
ROBOT SVG 88 ROBOT ARM (little arm) – REFURBISHED
ROBOT SVG 88 LOADER – REFURBISHED
MOTION CONTROLLER PACIFIC SCIENTIFIC SC453
RING,WAFER LIFT RP 0020-09844/0020?-09183 – NEW
PLATE QUARTZ DIST UPPER ASP – REFURBISHED
DOOR, SLIT VALVE, “S” – NEW
SET OF 2: PLATE, CAM SLIT VALVE – NEW
PRINTED CIRCUIT BOARD AMAT 0100-00011 CHOPPER DRIVE
COATED THERMOCOUPLE (8.5″ Lg) W – NEW
POWER SUPPLY POWER ONE HD24-4.8-A SET OF TWO IDENTICALS
VALVE CONTROLLER VACUUM GENERAL AC-2 ADAPTORR
THROTTLE VALVE VACUUM GENERAL MDV-018 – REFURBISHED
VALVE CONTROLLER TYLAN AdapTorr AC-2S06 – REFURBISHED
THROTTLE VALVE TYLAN MDVX-100BS11 – REFURBISHED
THROTTLE VALVE VACUUM GENERAL MDV-100B – REFURBISHED
SET OF TERMINAL UNITS BECKHOFF – NEW
SMC SOLENOID VALVE MANIFOLD – USED
CARRIER,8″ W/FLEX APPLIED MATERIALS – NEW
RF SWITCH HUTTINGER ELEKTRONIK 1500A – REFURBISHED
RECTANGULAR VALVE VAT A-370333 – REFURBISHED
MATCH BOX HUTTINGER ELEKTRONIK PFM 1500A – REFURBISHED
GAS DIST.PLATE,101 HOLES APPLIED MATERIALS – NEW
P/N : 0020-31492
Enlarge
ASYST TEACH PENDANT ROBOT CONTROLLER 8045R2
ANGLE VALVE VAT PNEUMATIQUE ALU DN40 – REFURBISHED
TELEMECANIQUE ABE7 INPUT – REFURBISHED
POWER SUPPLY MDP FIRST DC 1Q 50/5 – REFURBISHED
SET OF 5 SWILL WAFER SUPPORT PIN-ENP PN 0200-00581 -NEW
SET OF 14 SWILL COOLDOWN PEDESTAL WAFER SUP – NEW
SET OF 39 SHAFT CLAMP WALKING BEAM PN 0021-79131 – NEW
SET OF 6 SENSOR STEM 6″TITAN HEAD P/N: 0021-77458 – NEW
SET OF 5 SENSOR PLATES – PN 0021-79994 – NEW
SET OF 13 SEAL LIP FLG 625ID – PN 3700-02893 -NEW
SET OF 18 SCR CAP SKT/SLOT 0190-77220 – NEW
SET OF 2 PIN CAP – PN 0021-77267 – NEW
SET OF 3 KAPTON PAD QUARTZ BLADE 300MM PN 0020-15950
SET OF 17 ORING ID 10.178 CDS.112.SILICON?E 3700-02952
SET OF 9 CAP BEARINGS 300MM ROBOT AMAT P/N: 0020-06885
0010-14390 AMAT BRUSH MODULE EXTENDED ROLLER- NEW
HIGH VOLTAGE POWER SUPPLY BHK500-80MG – REFURBISHED
ALCATEL PTM5101 TURBO CERAMIC PUMP – REFURBISHED
MINI VACUUM PRESSURE SWITCH 41A11DGA2AA002 -REFURBISHED
TURBO PUMP CONTROLLER CFV900 – REFURBISHED
VALVE VERIFLO 944L. NEW
GAS PRESSURE REGULATOR TESCOM 44-2361-T9-051 – NEW
90 DEGREES VACUUM ELBOW ISO100-KF – REFURBISHED
90 DEGREES VACUUM ELBOW ISO160-KF – REFURBISHED
MURR SWITCH MODE POWER SUPPLY MPS20-230/24 SINGLE PHASE
VALVE VERIFLO 928L. NEW
VALVE SET VAT 77369-R8. NEW FAB SURPLUS
VALVE RK INDUSTRIES TDD-1002-T1. NEW FAB SURPLUS
VACUUM PARTS FLEXIBLE NIPPLE – NEW
A&N CORPORATION P/N: LF63-300-F
VACUUM PARTS BELLOW V4 – NEW
VACCUM CAPACITOR 20-500PF 15KV. REFURBISHED
UPPER ARM 200 MM – NEW
SET OF 5 FLANGE BALL BEARING SFR188SSW- NEW
ROPLAT PAWL HARD STOP. NEW FAB SURPLUS
PRESSURE REDUCING GAUGE VERIFLO PARKER NPR73530W4PXFSM
MIROIR PLAN FOR LASER EXERCICE – NEW
CVI LASER CORPORATION P/N: KRF-3050-45-P
KALREZ O-RING ORNG082E00299 – NEW
HOLDER, 8” WAFER – NEW FAB SURPLUS
DC MOTOR ASS AG-SCHWEIZ 84031-R1 – REFURBISHED
CONVERSION SET 3200251 TO 3200409 – NEW FAB SURPLUS
CABLE FOUR CASSETTE SHIFFTER. NEW FAB SURPLUS
CABLE ASSY ROTARY DRIVE ENCODER. REFURBISHED
ANGLE VALVE MKS PNEUMATIC DN25. REFURBISHED
CENTRAL PROCESSING UNIT RACK 19″ – TESTED
VACUUM MANOMETER MKS 628B02TBE1B (2 Torr) – REFURBISHED
DRIVELINE POLISH HEAD SPEEDFAM-IPEC 0770-700183
PTM5081 – TURBOMOLECULAR PUMP
TPU 060 – TURBOMOLECULAR PUMP
90 DEGREES VACUUM ELBOW ISO63-KF – REFURBISHED
PRESSURE REGULATOR APTECH BP1006SM 2PW 0M/10 – NEW
BRAKE INTERCONNECT, AMAT, 0100-09076 REV D
VACUUM MANOMETER ALCATEL FA111 – REFURBISHED
MASS FLOW CONTROLLER UNIT UFC-1100 Gas:O2 Range:100Sccm
MASS FLOW CONTROLLER UNIT UFC-1100 Gas:O2 Range:10Sccm
ALCATEL RSV1000 ROOTS VACUUM PUMP – REFURBISHED
SCHNEIDER ELECTRIC MODICON TSX MICRO – REFURBISHED
ROOTS VACUUM PUMP ALCATEL RSV 300 – REFURBISHED
TURBOMOLECULAR PUMP ALCATEL 5402 CP – REFURBISHED
SIC RING E55539 – NEW
PRINTED CIRCUIT BOARD AMAT 0100-09107 REV E – NEW
PRINTED CIRCUIT BOARD APPLIED MATERIALS 0100-09106- NEW
ANGLE VALVE DN25 BALZERS EVA025PA – REFURBISHED
CONTACTOR TELEMECANIQUE LC1D50 (LP1 D5011) – SET OF 2
CONTACTOR TELEMECANIQUE LCD1D25BD – SET OF 2 – USED
CONTACTOR TELEMECANIQUE LC1D09BD – SET OF 2 – USED
PNEUMATIC AIR CYLINDER SMC CDM2B20-100A – REFURBISHED
BLACK CARTER IPEC CMP676 NOVELLUS IPEC-1 – REFURBISHED
REMOTE WIRING DISTRIBUTION, AMAT, 0100-09126 REV B
THERMOELEMENT BALZERS – USED
SET OF 2 AIR LIQUIDE REGULATORS – USED
PRESSURE REGULATOR MANOMETER AIR LIQUIDE DIRS N°6
HIGH PRESSURE REGULATOR TESCOM 44-226X-242 – set of 2
CENTRIFUGE FSI PHOENIX P/N: 901111-001 – REFURBISHED
CROSS ISOLATION VACUUM NOR-CAL 3870-01212 – REFURBISHED
專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家
18150087953 點(diǎn)擊撥打電話聯(lián)系我們