SA811F
SA811F
SA811F
SA811F
過程控制實驗室引進(jìn)英國FeedBack公司開發(fā)的PROCON(PROcess CONtroller)38系列綜合實驗裝置，它是處理過程控制問題一個完整的組合程序。它包括相關(guān)的硬件過程控制裝置，監(jiān)視器和接口設(shè)備，一個工業(yè)標(biāo)準(zhǔn)控制器，并且附帶指導(dǎo)手冊和軟件。在本課題中我們用LabVIEW7．0軟件取代PROCON 38系列系統(tǒng)的工業(yè)標(biāo)準(zhǔn)控制器，搭建自己的控制平臺。我們選用了一塊I/V轉(zhuǎn)換芯片RCV420，一塊V/I轉(zhuǎn)換芯片XTRll0，一塊NI公司出產(chǎn)的PCI-6014E系列數(shù)據(jù)采集卡和一臺微機。
PROCON38系列系統(tǒng)水箱的浮子式液位計采集到的0 - 5V電壓液位信號被過程接口(PI)轉(zhuǎn)換為一個4 - 20毫安的電流信號，我們通過一個I/V轉(zhuǎn)換電路將其還原成0—5V的電壓信號，用NI公司的PCI - 6014數(shù)據(jù)采集卡采集進(jìn)來，進(jìn)行控制算法的處理后再通過該數(shù)據(jù)采集卡輸出0 - 5V的電壓控制信號，接著通過一個V/I轉(zhuǎn)換電路轉(zhuǎn)換成4- 20毫安的電流信號，控制伺服閥的開閉，4毫安時閥門全閉，20毫安時閥門全開，通過控制進(jìn)水量來控制水箱中的液位。控制算法我們采用的是 PID控制，直接調(diào)用仿真工具箱里的PID工具包。具體程序設(shè)計如下面程序框圖2所示。
訪問數(shù)據(jù)庫信息的第一步應(yīng)該是與數(shù)據(jù)庫建立連接，LabSQL中的Connection VIs就能夠?qū)崿F(xiàn)這個目的，首先利用ADO Connection Create．vi創(chuàng)建一個Connection對象，然后利用ADO Connection Open．vi建立與數(shù)據(jù)庫的連接。但是ADO Connec tion Open．vi只能設(shè)置DSN，而網(wǎng)絡(luò)數(shù)據(jù)庫為了安全起見都設(shè)置有用戶名和密碼，所以要打開遠(yuǎn)程數(shù)據(jù)庫不能使用LabsQL中的ADO Connection Open．vi，而要用ADO接口對象再開發(fā)。具體操作如下：
從控制模板的Application Control子模板中調(diào)用Invoke Node結(jié)點，在點右鍵彈出的菜單中選擇 Select Class，再在順次閃出的菜單里選擇ActiveX，最后選定其中的ADODB．-Connection，然后選擇其方法(Method)為Open，最終在程序框圖中顯示的圖標(biāo)如圖1所示。
這樣，通過在ConnectionString中設(shè)置DSN，在UserID中設(shè)置用戶名，在Password中設(shè)置密碼，就可對一個遠(yuǎn)程數(shù)據(jù)庫進(jìn)行象本地數(shù)據(jù)庫一樣的數(shù)據(jù)操作了。
接下來是執(zhí)行SQL指令：LabSQL中的Con nection VIs里有一個ADO Connection Execute．vi，它可以執(zhí)行SQL命令，檢索數(shù)據(jù)庫以及對數(shù)據(jù)庫進(jìn)行添加、更新、刪除操作，它的CommandText端子傳送的就是命令文本，通常是SQL語句，它返回的是一個記錄集(Recorderset)對象。
INDRAMAT DSS1.1/DSS01.1/DSS11/DSS011 SERCOS MODULE*XLNT
INDRAMAT TVD1.3-08-03
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Indramat TDM-1.2-50-300-W1/220 Servo Controller Rebuilt
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Bosch Rexroth Indramat Power Line Filter NFE02.1-230
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Indramat AC Servo Controller Model TDM 1-2-30-300W0
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Indramat Servo Controller DSC3.1-150-115 DSC31150115
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Indramat HMD01.1N-W0020 IndraDrive M Inverter Cntrl
DAG01.2 INDRAMAT FIRMWARE CARD
Indramat AC Servo Controller Unit BZM01.3-01-07
Indramat DSC 1.7-50 Servo Programming Module DSC1.7-50
Bosch Rexroth/Indramat CCD01.1-KE0.0-01-FW (273462)
INDRAMAT DEA29.1 SERVO PLUG-IN MODULE
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Indramat Servo Control DSC3.1-150-115 DSC31150115
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REXROTH INDRAMAT VCM2.0 VCM2 MODULE
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RAC3.1-150-460-L00-W1-220 INDRAMAT AC MAIN SPINDLE DR
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CDM1.3A INDRAMAT
Indramat AC Servo Power Supply Module TVD1.3-15-03
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Bosch Rexroth/ Indramat DDS3.1-W030-DS01-01-FW
TDM1.2-100/300W0-115-230 INDRAMAT DRIVE *1YR.WRTY*
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Indramat TVM 2.2-050-220/300-W1 TVM2.2050220/300W1
SIEMENS/INDRAMAT/REFU 402/10-2NA00 SIMOVERT DRIVE*XLNT*
TDM1.2-050-300-W1 INDRAMAT
KDA1.1-150-300-W1 INDRAMAT
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TDM2.1-50-300-W1 INDRAMAT
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Indramat Bleeder Module Part# TBM1.2-20-W1/115 Used
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KDA1.1-150-300-W1/115 INDRAMAT
INDRAMAT SERVO CONTROLLER TDM1.2-100-30 W1/220
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Indramat AC Servo Drives TDM 1.2-30/50-300 Power Supply
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Indramat Servo Drive Power Supply TVM2.2-050-220/300-W1
INDRAMAT TVM2.4-050-220/300-W1/220/380 SERVO P/S**NIB**
INDRAMAT DKS1.1-W030B-D SERVO DRIVE **XLNT**
INDRAMAT HDS AC SERVO DRIVE HDS04.2-W200N-HS45-01-FW
INDRAMAT TDM1.2-100-300-W1-115 SERVO CONTROLLER *XLNT*
Indramat TBM1.2-40-W1-024 AC Servo Bleeder TBM module
RAC2.3-250-460-L00-W1 INDRAMAT AC MAIN SPINDLE DRIVE
INDRAMAT SERVO OPERATOR INTERFACE MODULE ESM02.2-FW
LE5-220 INDRAMAT DRIVE FAN - USED - 1 YEAR WARRANTY
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Indramat Servo Controller Drive DSC 3.1-50-115V DSC3.1
INDRAMAT TVM 2.1-50-220/300-W1-220/380 POWER SUPPLY
INDRAMAT 4 SLOT CHASSIS RMB02.2-04
INDRAMAT POWER SUPPLY TVM-1-2-50W0-115V W/ FACE PLATE
TDM3.2-020-300-W0 INDRAMAT - USED - 1 YEAR WARRANTY
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REXROTH INDRAMAT MAGNET MOTOR MKD025B-144-GG0-KN
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INDRAMAT TDM2.1-30-300-W0 SERVO CONTROLLER**XLNT**
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INDRAMAT AC SERVO POWER SUPPLY TVM-1.2-50E0-220V TVM1.2
INDRAMAT DSM 2.3-FW PERSONALITY MODULE
Indramat Bosch Rexroth HZK02.1-W003N HZK021W003N
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