描述
大家可以看到积分项是一个历史误差的累积值,如果光用比例控制时,我们知道要不就是达不到设定值要不就是振荡,在使用了积分项后就可以解决达不到设定值的静态误差问题,比方说一个控制中使用了PI控制后,如果存在静态误差,输出始终达不到设定值,这时积分项的误差累积值会越来越大,这个累积值乘上Ki后会在输出的比重中越占越多,使输出u(t)越来越大,最终达到消除静态误差的目的
PI两个结合使用的情况下,我们的调整方式如下:
1、先将I值设为0,将P值放至比较大,当出现稳定振荡时,我们再减小P值直到P值不振荡或者振荡很小为止(术语叫临界振荡状态),在有些情况下,我们还可以在些P值的基础上再加大一点。
2、加大I值,直到输出达到设定值为止。
3、等系统冷却后,再重上电,看看系统的超调是否过大,加热速度是否太慢。
通过上面的这个调试过程,我们可以看到P值主要可以用来调整系统的响应速度,但太大会增大超调量和稳定时间;而I值主要用来减小静态误差。
欧美品牌停产的,常用的“PLC”备品备件
我司产品应用于以下领域:
1,《发电厂DCS监控系统》
2,《智能平钢化炉系统制造》
3,《PLC可编程输送控制系统》
4,《DCS集散控制系统》
5,《智能型消防供水控制系统》
6,《化工厂药液恒流量计算机控制系统》
7,《电气控制系统》造纸,印染生产线,变电站综合自动化控制系列
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C70445 MEI Marpet Mech-El 779 Manual Epoxy Die Bonder
C70444 Mech-El 709 Manual Eutectic Die Attach Bonder
C70443 Mech-El 703 Manual Eutectic Die Attach Bonder
A55095 Edwards Vacuum Dry Pump QDP80 Drystar
A55059 Edwards Vacuum Dry Pump QDP80
A55060 Edwards Vacuum Dry Pump QDP80
A66347 Edwards Vacuum Dry Pump QDP80
K69002 SierraTherm 4K14-96-5A Conveyor Furnace
K69277 Quad / de Haart MPC-20 Screen Printer Untested
C60415 Unitek Micropull IV Wire Bond Pull Tester 1000g
C61654 Unitek Micropull IV Wire Bond Pull Tester RS232
N72714 Perkin Elmer Aanalyst 100 Atomic Spectrometer
N72711 Seiko D-Tran XM3106B Robotic Arm
C51193 Agilent E4406A Transmitter Tester w/ 202 300 BAF
N72004 Eppendorf 5804 Multipurpose Centrifuge w/Rotor
C52517 Agilent E4406A Transmitter Tester w/ 202 300 BAH
N59001 Unitek Micropull IV Wire Bond Pull Tester
N70041 Rainin Varian Dynamax SD-200 UV-1 FC-1 HPLC Sys.
AE43755 RECIF SA Wafer Scribe Reader IDLW8 System
C69112 Spectra Multi-Quad LMI Gas Analyzer w/ Turbo Vac
L65211 DEK 248ce Semi-Automatic Screen Printer
A41046 ADE Technologies DiskMapper Model M2 System
N63492 Fluke Networks Optiview Workgroup Analyzer
N67906 Tektronix RTPA2A TekConnect Probe Adapter NIB
A66346 Piller Apostar AS50 UPS System 50 kVA, 480V 85A
N53546 Perkin Elmer 300 Micralign Projec. Mask Aligner
C69602 Logitech 2125 Polishing / Bonding Jig
A58951 K&S 6491 Semi-Automatic Die Bonder
A71987 Varian Prostar Autosampler 420, 210, 325, 701
C54973 Agilent 16950A 600MHz State/4GHz Timing/4Meg Mem
C54587 Agilent 16950A 600MHz State/4GHz Timing 4Meg Mem
G53498 Two Alcatel IPUP A100L Dry Vacuum Pumps
N71355 Isel Robotik Wafer Handling Robot 10-21-0015
C72658 FST Fine Semitech Dual Recirculating Chiller
N71514 Leitz Wetzlar Trinocular Microscope w/Stage
N72005 Eurotherm TU1451 SCR Power Controller
C51174 HP E4406A Transmitter Tester 7MHz-4GHz w/Opt BAH
N59032 Signatone S-1007S Manual Probe Station S1007S
N63395 K&S 1470-4 Automatic Wedge Bonder
C51195 HP E4406A VSA Transmitter Tester w/BAH, 204, UK6
C51194 Agilent E4406A Transmitter Tester w/ Opt 202 BAH
G72332 Agilent G1314B VWD Variable Wavelength Detector
G72403 Heidolph Laborota 4001 & Heizbad HB Digital
G71854 NSK XY-HRS120-RH2SN?F Linear Stage w/Ballscrew
G72622 Brinkman Metrohm 784 KFP Titrino & 703 Ti Stand
K72692 Quester Tech. UFT10-02 Liquid Source Cabinet LSC
K72693 Cleansorb CS096DCD Dry Bed Absorber Cabinet
C55171 Agilent 16950A 600MHz State/4GHz Timing/1Meg Mem
A69921 (2) Balanced Power II BPII25 UPS System 25 kVa
N72803 (2) Christie Electrohome Roadie S12 Projectors
N57984 ABI Prism 6700 Auto Nucleic Acid Workstation
C70346 Veeco Dektek SXM Atomic Force Microscope Control
L67921 Hughes Wire Bonder System WD-8700D1
A69920 Leybold Coolpak 6200 Compressor w/ Cold Head
A63423 Bemco Inc. FC-77 Cart Environmental Pump System
A62562 Varian VE10 Vacuum Evaporator, Edwards E2M5
N58955 Signatone S-250-5 Wafer Prober w/ B&L Microzoom
N58956 3S 8013 Pick & Place Inspection Wafer Station
N69000 Instrumentation IL ACL 8000 Coagulation Analyzer
A50159 Tenney Six Engineering T6S Chamber 21*22*23H
N56306 Edwards EH500A Mechanical Booster Pump D90SD
Y70234 Crest Ultrasonic Cleaner & Ultrasonic Generator