NGHIEN CUU,
X A Y DITNGHE DO LlTOfNG-KIEM TRA KHOI KHUECH DAI DIEIV TLT CHO CAC KHI TAI QUAN SlT
Tru-ang Ddng Khoa, Dinh Hong Todn
Khoa Ky thuat dieu khiin. Hge viin Ky thugt Qudn sir.
TonTtdt:
Bdo cdo trinh bdy todn bg co so thiet ke, gidi phdp cong nghe, cdu triic phdn cimg, phdn mem vd mo hinh sdn phdm ciia mgt he thdng do ludmg - kiem tra diing mdy tinh cho khdi khuech dgi Cn-7M ciia h$ thdng dieu khiin phdo AK-230. He thdng da dugc thiet ke, xdy dung vd thu nghiem tgi Phong Ky thuat Viing 3 Hdi qudn. gdp phdn vdo cdng tdc nghien ciru, tiep thu khoa hge cong nghe vd dam bdo ky thudt cho cdc thiet bi. khi tdi tgi dan vi.
Abstract:
In this article, we introduce a measurement system using a computer with the root of design, technology solution, hardware and software structure for Cn-7M amplifier in AK-230 artillery control system. It has been designed, built, tested in the Technical department in the 3rd area of Navy force. It also plays an important role in researching technology and guarantees the technical devices in the other units.
LDATVANDE
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Khdi khuech dai dien tir dugc su dyng rgng rai trong cac he thdng truyen ddng bam sdt, cdc he thdng tinh todn dien ca trong cdc khi tdi qudn sy, diln hinh Id he thdng dieu khiln hda
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lyc phdo tdu AK-230 tren tdu Hdi qudn. Khdi khuech dai dien tu dimg de khuyech dai tin hieu
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dien dp sai lech den mdt gid tri du Idn de dieu khien ddng co chap hdnh kieu A,JHn-363A, Id phdn tii xu ly tm hieu chinh trong he truyen dgng phdo AK-230.
Nhiem vy do ludng- kiem tra, chdn dodn hdng hdc cd the thye hien theo nhieu bien phdp khdc nhau nhu: dung ddng hd van ndng, Oxilo Scope, may do chuyen dyng... trong do
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cd gidi phap do ludng - kiem tra diing mdy tinh, tich hgp cdc modul chuan hda vdi cdc tinh ndng tien tiln, vdi sy kit hgp mim deo, linh hoat cua phin ciing tien tien vd phan mem hien dai.
Gidi phap tren ngay cang phdt triln manh me, dugc iing dyng rgng rai va dan trd thanh xu hudng phd biln h-ong cdc he thing do ludng, dilu khiln vd giam sdt hien dai. He thing c6 nhilu uu dilm: do chinh xdc cao, do nhieu kenh ddng thdi, cdi ddt nhieu che do do, tham sd
II. CAU TRUC HE KHUECH DAI DIEN TU' TRONG Hf
T H 6 N GDIEU KHIEN HOA LUC
So do chirc ndng ciia khdi khuech dai didn lir co cau tnic nhu sau:
Tfn hicu sai lech
Axtn-
363A
KD
i
APY
M V i T
KDLL
KDCS
»
:\ \
GIAI DC
BOLQC
BOHC
1
Tm hicu phan hoi loc dp GIAI DC
KD
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KD»'
Hinh 1. So- do chuc nang cua khoi khuech dai CII-TM.
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Khdi khuech dai dien Hi gdm cdc thdnh phdn:
KD: Khdi khuech dai tfn hieu sai sd diu vdo tin sd 500 Hz.
KDLL: Khdi khuech dai lap lai diing de khulch dai va phdi hgp trd khang vdi diu vao
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bd gidi dieu chd.
GIAI DC: Bien ddi tfn hieu xoay chilu diu vao thdnh tin hieu mdt chilu vd loai trii sir tdc ddng ciia cdc thanh phdn hdi bdc cao ciia tfn hieu vdo.
BO DC: Biln ddi tfn hieu diu vdo mgt chilu thdnh cdc xung vudng tin sd 500 Hz, co bien do ty Id vdi tfn hieu diu vao vd pha ban diu thay ddi vdi cyc tfnh diu vdo.
KDXC: Bd khuech dai theo ddng xoay chilu.
BO LOG: Mach lgc T kep.
KDCS: Tang khulch dai ddng mdt chilu.
MY: Khulch dai tir.
Nhdn thiy ring, khdi khulch dai dien lir gdm nhilu ting, chiic nang xir ly tfn hieu khac nhau, kieu dang, gia tri tfn hieu tai moi vi tri cd dac dilm rieng va cd sy anh hudng, tuang tac Idn nhau. Tir dd, yeu ciu phdi quan sal, kilm tra dong thdi dang tin hieu tai cac vi tri khac nhau trong cac chi do boat ddng khdc nhau.
HI.
X A Y D U ^ J G C A UTRUC HE THONG VA THUAT
T O A N C H U ' D N GTRINH DO LlTO^^G - KIEM TRA
3.1. Xay dyng ciu triic he thdng
He thdng do ludng - kiem tra dugc xay dyng tren co sd mdy tfnh PC vd cdc phan ciing, phdn mem hidn dai. He thong ung dung cho ddi lugng Id khoi khulch dai dien tir Cn7M trong he thdng phdo AK-230 tren tau hdi quan.
Tren co sd cdc gidi phdp vd nguyen tdc chung khi thilt kl cac hd thdng do ludng - kiem
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tra, cdn cii vdo cdu tao, nguyen tdc hoat dgng ciia khdi khuech dai dien tir, ta xdy dyng he
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thdng CO cdu true nhu sau:
May tmh LabVIEW DAQmx
A—•Card DAQ
<—•KDDT
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Hinh 2: Cau tnic chung he thdng do ludng - kiem tra dimg mdy tfnh
Mdy tfnh PC cd vai trd Id thiet hi thu thdp, tfnh loan, hien thi vd luu trii, in dn dir lieu theo cdc yeu cau xac dinh.
LabVIEW. DAQmx la cdc phin mim dk td chiire, xay dyng chuang trinh, thu thdp dii lieu da kenh ddng thdi vdi ldc do cao theo cdc chudn giao tiep khdc nhau: PCI, USB, PXI...
Khdi KDDT: Khdi khulch dai dien tu la ddi lugng cin do ludng - kiem tra.
3.2. Xay dyng thudt loan chuang trinh do ludng - kilm tra
Xay dyng ciu true va thudt todn cua chuang trinh do ludng - kiem tra nhu sau:
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Hien thj do thi, tham so tin hifu
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Phdt tin hi^u mau
Khdi tao chuung trinh
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Thiet ldp ciu hlnh, tham si
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Thiet Idp chi d$ hoat dOng
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Thu tin hifu tir card DAQ
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Thay dii chi d$ hoat d$ng
1 r
Thodt khdi chuong trinh
•
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Luu tfn hifu vio File
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In in
bdo c^oHinh 3. Thudt toan chuong trinh do ludng - kiem tra
3.3. Cdc dang tin hieu cin kilm ti-a yong khdi KDDT va gidi phdp tiiyc hien
Trong khdi khulch dai dien tii, ngoai yeu ciu do da kenh, ddng thdi, ta cdn phai do nhieu dang tin hieu khdc nhau nhu: tin hieu xoay chilu 500 Hz dang hinh sin, tin hieu mot chieu, tin hieu 500Hz dang xung vudng. Iing vdi moi dang tm hieu cin do cdc tham s6 khac nhau nhu: bien do, tin so, chu ky, dg rdng, miic cao, miic thip...
1. Dang tin hieu mgt chilu, cin xac dinh bien dg tin hieu: tai vi tii r42, r99, ri02.
Giao dien do ludng - kilm h-a dugc xay dyng nhu sau:
o.oj
5102
I
A
MM.
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H ^ ^ ^ ^ ^ ^ ^
i^9^b|^E'.f^^^^j^^^^S
MIlllllllllllllliBHMBiM^
0 0.005 O.Q:
2. Dang tin hieu xoay chieu, can xac djnh bidn do vd tan sd: tai cdc vi tri r2, r30.
Giao didn do ludng - kiem tra dugc xay dyng nhu sau:
'G30
0.005 0.0
3. Dang tin hieu xung, can xdc dinh chu ky, do rdng, bien do, mire cao, mire thap: tai cdc vi tri r 5 3 , r77.
Giao didn do ludng - kiem tra dugc xdy dung nhu sau:
o.o:
G77
H jj32jg L
io-||9 s - | l l o-H|
-5-HI -10-gj
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0 0.005 "
nlJUH
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rV. XAY DU>fG C H L T O N G TRINH DO LLTCXNG - KIEM TRA VA KHAO SAT KET QUA
4.1. Giao dien chuang trinh do ludng - kidm tra
Tren co sd cdc phin mim LabVIEW, DAQmx, ta xdy dyng chuang trinh do ludng - kiem tra tren mdy tinh PC nhu sau:
M(TH<SNOOOUfdMa-KlfM'nUKHdlUWfcHB«Ci>.7MC0AHf TH^M6DKPHiOMC-»« | DV • >0HdwaHOC | HCmk
4.2. Td hgp he thong do ludng- kidm tra
Sau khi hoan thidn, hinh anh he thong nhu sau:
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4.3. Cdc thdnh phdn he thdng do ludng - kidm tra
He thdng do ludng - kiem tra bao gdm cdc thiet bj nhu sau: ,
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1. Khdi tao tin hidu sai lech bao gdm:
• CKBT phdt, CKBT thu.
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• Khdi tao gid sai lech sai lech gdc vd ldc do gdc, didu khien qua may tmh.
2. Ddng CO chdp hdnh AJIU363, mdy phdt tdc do TJ1,\02, cdc phin tii tren 2 khdi nay dugc lien he ve dien vd co khi ddm bdo boat ddng theo diing chuc nang.
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3. Khdi ngudn, dam bdo cung cdp cdc dien dp xoay chieu, mdt chieu, cung cap cho boat ddng cua khdi Cn-7M vd ciia thilt bi chip hdnh, tao gid.
4. Mdy tinh PC, card PCI-6221 vd chuang trinh dilu khiln qud trinh do ludng-ki&n tra, hien thj, chdn dodn hdng hdc, luu dir lieu ti-ong cac phien kilm tra.
4.4. Tinh ndng chuang trinh do ludng - kilm tra
Thu thdp, hiln tiii dong thdi dang tin hieu tai 7 vi tii cin phai kiem tra ti-ong bg KDDT ciia khdi Cn-7M.
- Xir ly, hiln thi cdc tham sd tin hieu: Bien do, tin s6, chu ky, do rdng xung,...
Tao gid chd do boat ddng bdng cdch tao ra sai" lech diu vdo vdi vi tri gdc va tdc do goc khdc nhau.
Hidn thi tin hieu mau chuin tai cdc vi tri yong khdi KDDT.
- Luu trii dii lieu vd in in bdo cao.
