A20B-2900-0790/05A 发那科

A20B-2900-0790/05A 发那科

在注塑机中，应用为广泛的控制规律为比例、积分、微分控制，简称PID控制。当注塑机压力，速度及温度实际参数不能可靠掌握，或得不到的数学模型，控制理论的其它技术难以采用时，参数依靠经验和现场调试来确定，这时应用PID控制技术为方便。即当我们不了解注塑时实际的压力，速度，温度﹐或不能通过有效的测量手段来获得上述参数时，适合用PID控制技术。PID控制，实际中也有PI和PD控制。PID控制就是根据系统的误差，利用比例、积分、微分计算出控制量进行控制的。 　　比例（P）控制 　　比例控制是一种简单的控制方式。其控制的输出与输入误差信号成比例关系。当仅有比例控制时系统输出存在稳态误差（Steady-state error）。 　　积分（I）控制 　　在积分控制中，控制系统的输出与输入误差信号的积分成正比关系。对一个注塑机控制系统，如果在进入稳态后存在稳态误差，则称这个控制系统是有稳态误差的或简称有差系统（System with Steady-state Error）。为了稳态误差，在注塑机压力，速度，温度控制中引入“积分项”。积分项对误差取决于时间的积分，随着时间的增加，积分项会增大。这样，即便误差很小，积分项也会随着时间的增加而加大，它推动注塑机电脑的输出增大使稳态误差进一步减小，直到等于零。因此，比例 积分(PI)控制，可以使注塑机系统在进入稳态后无稳态误差。 　　微分（D）控制 　　在微分控制中，注塑机电脑中压力，速度，温度的信号输出与输入误差信号的微分（即误差的变化率）成正比关系。 注塑机电脑在克服误差的调节过程中可能会出现振荡甚至失稳。其原因是由于存在有较大惯性组件（环节）或有滞后(delay)组件，具有抑制误差的作用，其变化总是落后于误差的变化。解决的办法是使抑制误差的作用的变化“超前”，即在误差接近零时，抑制误差的作用就应该是零。这就是说，在控制器中仅引入“比例”项往往是不够的，比例项的作用仅是放大误差的幅值，而目前需要增加的是“微分项”，它能预测误差变化的趋势，这样，具有比例 微分的注塑机电脑，就能够提前使抑制误差的控制作用等于零

KEYENCE LV-H62F NIB Free Ship

KEYENCE LV-H62F LASER SENSOR HEAD LVH62F LV-H35F  

Keyence LV-H62 Laser Sensor   IN BOX

KEYENCE LV-H52 LVH52 LONG DISTANCE LASER REFLECTIVE SENSOR HEAD  

KEYENCE LV-H37 LVH37 REFLECTIVE SENSOR SPOT TYPE HEAD LASER PHOTOELECTRIC  

KEYENCE LV-H35F/H62F WATER PROOF LASER SENSOR L22

KEYENCE LV-H35F

KEYENCE LV-H32 PHOTOELECTRIC HEAD 30-1000MM RANGE

Keyence LVDT Measurement Sensor GT2-H32 & Amplifier GT2-72N & Cable GT2-CH10M

KEYENCE LV-51M AMPLIFIER UNIT 12-24VDC 100MA DIGITAL LASER SENSOR,  

Keyence LV-21AP Laser Sensor   IN BOX

Keyence LV-21AP Laser Sensor   in box

Keyence LV-21A w/ LV-H42 / LV-22A w/ LV-H37 (J2)

Keyence LV-21A Laser Sensor & Head LV-H62  

Keyence LV-11SBP photoelectric amplifier unit.

KEYENCE LV-11SB   ULTRA-SMALL DIGITAL LASER SENSOR LV11SB

Keyence LV-11SA & LV-S41, Laser amplifier and sensor, sn: dφm.

Keyence LT-9501H, Displacement meter controller, Without Sensor Head, sn:8014F.

Keyence LT-9031M0 Scanning Laser Sensor Head

Keyence LT-9031M Scanning Laser Sensor Head S/xxxxxNo0103

KEYENCE LT-9030M LT9030M Laser

KEYENCE LT-9030M LASER

Keyence LT-9011M Laser Sensor

KEYENCE LT-9010M LT9010M Laser

KEYENCE LT-9010 LT-9000 Series Surface scanning laser sensor Head SEN-I-104

KEYENCE LT-9001SO(5653) High Accuracy Laser Confocal Displacement meterETC-I-186

KEYENCE LT-9001H

Keyence LT-8110, LT-V201, LT-8105 Profiler

KEYENCE LT-8110, LT-8106, LT-V201 Laser Confocal Displacement Meters

Keyence LT-8110, Laser Displacement Sensor sn:263816

Keyence LT-8110 Laser Displacement Sensor

Keyence LT-8110

Keyence LT-8105 Laser Focus Displacement Meter & LT-8020 LASER HEAD CD PROFILER

Keyence LT-8105 High-Accuracy Laser Confocal Displacement Meter Controller

Keyence LT-8105 / LT-V201 Laser Sensor Focus Displacement Meter LT-8010

Keyence LT-8105 / LT-V201 Laser Sensor Focus Displacement Meter Camera Control

KEYENCE LT-8101,LT-V201,LASER FOCUS DISPLACEMENT SENSOR CONTROLLER

KEYENCE LS-D501 DISPLAY UNIT LASER DISPLACEMENT LS3 , Screen

Keyence LS-B11 2 Channel Laser Displacement IO Board for LS-5000 LSM controllers

KEYENCE LS-7601 CONTROLLER WITH MONITOR FUNCTION 5.5 INCH LCD DISPLAY,  

Keyence LS-7600 LS-7000 Series Laser Digital Micrometer with LS-7010R Sensor Hea

KEYENCE LS-7501 HIGH-ACCURACY CCD MICROMETER With LS-7030M HEAD & Cable

KEYENCE LS-7501 HIGH-ACCURACY CCD MICROMETER / Free Expedited Shipping

KEYENCE LS-7501 HIGH-ACCURACY CCD MICROMETER

Keyence LS-7501 High Accuracy CCD Micrometer Monitor w 4 LS-7030 mT Head & Cable

Keyence LS-7501 Controller with LS-7030 LED Micrometer Head - USA Seller

Keyence LS-7500

Keyence LS-7030R LS-7030T Sensor High Accuracy CCD Micrometer

Keyence LS-7030R LS-7030T Sensor High Accuracy CCD Micrometer

Keyence LS-7030R LS7030R Sensor High Accuracy CCD Micrometer

Keyence LS-7030MT, Micrometer Sensor without Receiver & Controller .

Keyence LS-7030MT & LS-7030MR, Micrometer Sensor without controller, dφm .

KEYENCE LS-7030M SENSOR HEAD WITH MONITOR FUNCTION,  

KEYENCE LS-7001 LASER CONTROLLER HIGH ACCURACY DIGITAL CCD MICROMETER LS 7030R/T

Keyence LS-7001 Laser Controller

KEYENCE LS-7001 HIGH-ACCURACYMICROMETER/ LS-7030R/T HEAD & Cable

KEYENCE LS-7001 CONTROLLER

Keyence LS-7000 LS7000 High Accuracy CCD Micrometer

KEYENCE LS-5501 High Speed Laser Scan MicroMeter

Keyence LS-5041R + LS-5041T Laser Scanner

Keyence LS-5041R + LS-5041T Laser Scanner

Keyence LS5041/ LS5001 Laser Micrometer Profile Scanner w Unitronics PLC LS5000

KEYENCE LS-5041 LASER SCAN MICROMETER HEADS FOR MACHINE SHOP INSPECTION LAB

Keyence LS-5040T, Micrometer Sensor without Receiver, Broken cable.

KEYENCE LS-5001 LS-5041T LS-5041R

KEYENCE LS-5001 LS-5041T LS-5041R

KEYENCE LS-5001 LASER MICROMETER CONTROLLER  

Keyence LS-5001 High Speed Laser Scan Micrometer

Keyence LS-5000 LS5000 Laser Scan Micrometer

Keyence LS-3101 Laser Scan Diameter,85-240Vac,Un ,Japan(3066B2)

Keyence LS-3101 Laser Scan DiaMeter w/LS-3060 Head (V

KEYENCE LS-3101 LASER SCAN DIAMETER POWER ON TESTED

KEYENCE LS-3101 LASER SCAN DIAMETER CONTROLLER

Keyence LS-3101 Laser Scan Diameter / LS-3036 Sensor Head

KEYENCE LS-3101 & LS-3033 LASER SCAN DIAMETER FOR MACHINE SHOP INSPECTION LAB

Keyence LS-3100W, Laser scan micrometer excluding scaning heads, LNC.

Keyence LS-3100W LS3100W Laser Scan Micrometer No Key

Keyence LS-3100 LS3100 Laser Scan Diameter

Keyence LS-3100 Laser Scan Diameter  

KEYENCE LS-3100 LASER SCAN DIAMETER LS-3060T & LS-3060R HEADS FOR INSPECTION LAB

KEYENCE LS-3100 LASER SCAN DIAMETER FOR AUTOMATION MACHINE SHOP INSPECTION LAB

KEYENCE LS-3100 Lase Scan Diameter

KEYENCE LS3100 **NIB**

Keyence LS-3060T Photoelectric Laser Scan Receiver  

Keyence LS-3060T LS3060T Defective

Keyence LS-3060R PHOTOELECTRIC LASER SCAN RECEIVER, ,Japan(2988)

Keyence LS-3060R Photoelectric Laser Scan Receiver  

KEYENCE LS-3060R PHOTOELECTRIC LASER SCAN RECEIVER

KEYENCE LS-3034 SCANNING HEAD * *

Keyence LS-3034 Scanning Head

Keyence LS-3034 Scanning Head

KEYENCE LS-3032 * *

KEYENCE LS-3002 LASER SCAN DIAMETER * *

KEYENCE LR-ZB250P LASER SENSOR SWITCH SQUARE REFLECTIVE CABLE TYPE PLC  

Keyence LR-ZB250P CMOS Laser Sensor  

Keyence LR-ZB250N Laser Sensor   IN BOX #7049768

Keyence LR-ZB250N Laser Sensor   IN BOX

Keyence LR-ZB250CP Self-contained CMOS Laser Sensor M8

Keyence LR-ZB250CN Rectangular Reflective M8 Connector Type, 250 mm

KEYENCE LR-ZB250CN   CLASS 2 LASER

Keyence LR-ZB250C3P self contained CMOS laser sensor head

Keyence LR-ZB250AP Rectangular Reflective Cable Type 250 mm

Keyence LR-ZB240CB Self-contained CMOS Laser Sensor LR-Z series

Keyence LR-ZB100P   IN BOX

KEYENCE LR-ZB100P LASER SENSOR SQUARE REFLECTIVE CABLE TYPE, 100MM PLC  

Keyence LR-ZB100P , LR-Z series Self-contained CMOS Laser Sensor  

Keyence LR-ZB100N Laser Sensor   IN BOX #9750469

Keyence LR-ZB100N Laser Sensor   IN BOX

Keyence LR-ZB100CP LASER SENSOR CMOS RECTANGLE. !!

KEYENCE LR-ZB100CN OP-73864 #1531261

KEYENCE LR-ZB100CN OP-73864

Keyence LR-ZB100C3P Distance Base Laser Sensor w/Murr M8 Cable

Keyence LR-Z series Self-contained CMOS Laser Sensor LR-ZB100P

Keyence LR-TB5000CL self-contained 5m distance detection laser sensor

KEYENCE LR-TB5000C   ALL-PURPOSE LASER SENSOR LRTB5000C

Keyence LR-TB5000C self-contained 5m distance detection laser sensor

Keyence LR-TB5000C Self-contained 5m Distance Detection Laser Sensor

KEYENCE LR-TB5000C   ALL-PURPOSE LASER SENSOR LRTB5000C

Keyence LR-TB2000CL distance detection 2m laser sensor class 1

KEYENCE LR-TB2000C   IN THE BOX

KEYENCE LR-TB2000C

Keyence LR-TB2000 Laser Sensor

Keyence LPS-24 PR-920 Automated Positioning System T39301

KEYENCE LOT 3 BL-601 LASER BARCODE READER   EMS

Keyence Long Distance Spectrum Interferometer Controller Infared Laser SI-F10U

KEYENCE long distance Laser Sensor head LV-H52

Keyence LK-HO87

Keyence LK-HA100 Expansion Controller

Keyence LK-H1W LK Navigator LK-G3000 series software + cable

Keyence LK-H157 Laser, 150mm

Keyence LK-H055 Sensor Head, Wide Type

KEYENCE LK-H052 LASER DISPLACEMENT 50MM TRIANGULARR LASER

Keyence LK-H027K Sensor Head, Wide Type

KEYENCE LK-GD500  

KEYENCE LK-GD500 CONTROLLER DISPLAY PANEL

KEYENCE LK-GD500 CONTROL PANEL, NO SENSOR, CONTROL PANEL ONLY

KEYENCE LK-GD500 #9192798

KEYENCE LK-GD500

Keyence LK-G87, G 87

Keyence LK-G87

Keyence LK-G82 Sensor Head Spot Type, Laser Class 2

Keyence LK-G82 Photoelectric High Resolution Sensor  

KEYENCE LK-G82 LK-G3000 LK-GD500

Keyence LK-G80H Laser

Keyence LK-G80 High Speed High Accuracy CCD Lase