電機(jī)驅(qū)動(dòng)器選用ALTERA公司的MAX7000A系列器件對(duì)電機(jī)的轉(zhuǎn)子位置等信號(hào)進(jìn)行邏輯處理,選用多達(dá)有76路可編程I/0口和100引腳的 EPM7128AE,該CPLD能夠滿足系統(tǒng)設(shè)計(jì)要求。器件EPM7128AE實(shí)現(xiàn)了電機(jī)的三相全橋逆變電路觸發(fā)信號(hào)、過(guò)流保護(hù)、正反轉(zhuǎn)、三相全橋的開通與關(guān)斷等功能。一片CPLD器件EPM7128AE上有兩個(gè)電機(jī)的邏輯信號(hào)。由于無(wú)刷直流電動(dòng)機(jī)的霍爾位置傳感器CS3020的輸出是集電極開路結(jié)構(gòu),故上拉2KΩ電阻,再把霍爾信號(hào)SA, SB, SC送到CPLD的輸入端口。其JTAG接口的TMS, TCK, TDI, TDO四個(gè)端子必須接上拉電阻,再接+5V電源。

2.4 無(wú)刷直流電動(dòng)機(jī)的功率驅(qū)動(dòng)電路

無(wú)刷直流電動(dòng)機(jī)的功率驅(qū)動(dòng)電路采用以IR公司的專用驅(qū)動(dòng)芯片IR2130為中心的6個(gè)N溝道的MOSFET管組成的三相全橋逆變電路。其輸入為以功率地為地的PWM波,送到IR2130的輸入端口,輸出控制N溝道的功率驅(qū)動(dòng)管MOSFET,由此驅(qū)動(dòng)無(wú)刷直流電動(dòng)機(jī)。采用這種驅(qū)動(dòng)方式主要是功率驅(qū)動(dòng)芯片 IR2130對(duì)“自舉”技術(shù)形成懸浮的高壓側(cè)電源的巧妙運(yùn)用,簡(jiǎn)化了整個(gè)驅(qū)動(dòng)電路的設(shè)計(jì),提高了系統(tǒng)的可靠性。而且IR2130驅(qū)動(dòng)芯片內(nèi)置死區(qū)電路,以及過(guò)流保護(hù)和欠壓保護(hù)等功能,大大降低了電路設(shè)計(jì)的復(fù)雜度,進(jìn)一步提高了系統(tǒng)的可靠性。

2.5 電流采樣及過(guò)流保護(hù)電路

無(wú)刷直流電動(dòng)機(jī)的電流是通過(guò)功率驅(qū)動(dòng)電路母線上的電阻進(jìn)行檢測(cè)的。母線上面的電阻是由兩個(gè)0.01Ω的功率電阻并聯(lián),采樣電路是通過(guò)這兩個(gè)并聯(lián)的采樣電阻進(jìn)行電流采樣的,采樣電阻將電流信號(hào)轉(zhuǎn)換為電壓信號(hào),電壓信號(hào)送到電流監(jiān)控芯片進(jìn)行放大,然后經(jīng)過(guò)由OPA2344構(gòu)成二階有源濾波電路濾波,最后得電流反饋信號(hào),直接送到A/D轉(zhuǎn)換器。

ROSEMOUNT ALPHALINE TEMPERATURE TRANSMITTER 442A RGASPECIFYN1 4-20MA

ATKOMATIC SOLENOID VALVE MODEL 3000

NUMATICS 12SAD352E

ASHCROFT B461S

PENWALT 22E101SSNX2

FERRAZ TRM1-8/10

WAGO END BARRIERS 282

TELCO SPBS26005

GEMS PS77-30-4FNZ

SQUARE 9001-BW43

ELECTRO EC-2004-12-DRN-CFX-MDL

CHINO CORPORATION DA DA1331-200

GE 21W810T

PECO VINYL PIGGYBACKS C20663 16-14

GRAPHTEC KT101

ConTROL 82000000011200

HARTING 09380082753 HANK-8/0-F

DATABOARD 4011-10

BAUER 1700-009 9 9210-01

VERO MonOVOLT PK60-FKK 36-010838J

SCI / EPIC PC BOARD 21745 MSD/SSD/AFL 51564

ASHCROFT B464V RANGE

BANNER 193034

KEYENCE ED-118U

ASCO 168621

PHOENIX ConTACT SAFETY RELAY MODULE PSR-SPP-24UC/URM4/5X1/2X2 2964005

RITCHIE 69613 YJI-3

OMRON E3A-10M2

FEDERAL NE224025

YOKOGAWA 180183HEAA1ABA

YOKOGAWA 180183HE/DC2447

GE 5K49SN4115A 844617-0090

BALDOR M-4060-SPECIAL FMD0627B-00

ALLEN-BRADLEY 135893

COOPER CCX70RWHDH

CUTLER-HAMMER C0250E1B

本特利

3500/15-02-02-00

3500/22-01-01-00

3500/25-01-03-00

3500/33-01-00

3500/42-04-00

3500/50-04-01

3500/50-01-01

3500/61-01-00

3500/60-01-00

3500/45-01-00

3500/53-03-00

3500/42-06-00

3500/42-01-00

3500/15

3500/22M

3500/92

3500/25

3500/42M

3500/40M

3500/60

3500/32M

BENTLY NEVADA 128229-01

BENTLY NEVADA 136188-02

BENTLY NEVADA 3500/93

BENTLY NEVADA 172109-01

BENTLY NEVADA 125840-02

本特利傳感器探頭,本特利9200傳感器系統(tǒng),7200傳感器系統(tǒng)。

各類傳感器,前置放大器,延伸電纜,監(jiān)測(cè)器,框架,電源,校驗(yàn)儀等。

72341-03-05 72341-10-05 72342-03-08 72342-03-09 72342-10-04

72342-10-05 72381-03-02-02 72381-10-02-02 72382-10-03-04

73242-11-09 7330854-040-24-05 74712-06-05-03-00

80917-01 82608-01 84152-01 84661-10 84661-20 84661-33 89410-01

9200-01-01-10-00 9200-01-05-01-00 9200-01-05-05-00 9200-01-05-10-00

9200-01-06-10-00 9200-01-08-11-02 9200-01-24-10-00 9200-03-24-10-00

9200-06-01-05-00 9200-06-01-10-00 9200-06-02-10-00 9200-06-05-05-00

9200-06-05-10-00 9200-06-06-02-00 9200-06-50-08-02 9571-45(10米)

990-04-05-02-00 990-04-50-01-00 990-04-70-01-00 990-05-50-01-00

GE CR2940NC202B

OMRON C200HW-BC051

OMRON C200H-IA121

OMRON K2CU-F80A-D

CSE SANI-FLOW 3S-EB-2U-GF-BT-SS-DRAG

BELL & HOWELL 314351 CS1125

THOMAS SKRR8G

TOSHIBA LF494FBABSCAAA